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Jul 31, 2018 - Anti-Virus FAQs. What if I already have Anti-virus software? Symantec does not charge for virus definition updates or require a subscription to.

1. Product features may be added, changed or removed during the subscription term, and not all features are available for all operating systems—see System Requirements for supported devices. Software does not guarantee protection against all possible threats.
2. This article answers most frequently asked questions about Sophos Home. Powerful, business-grade security that IT professional trust to your home PCs and Macs. Can I use Sophos Home with my other security or antivirus software? For supported platforms, refer to system requirements for installing Sophos Home.

Information Security and Policy does not 'certify' applications. A Pass or Fail grade is intended to indicate whether or not an application meets the campus minimum security requirements for application security at the time at which it was assesssed. An application security assessment is intended to find the most critical and high risk vulnerabilities; however, the assessment process is often accelerated due to time and resource constraints meaning all vulnerabilities may not be discovered in a single assessment. Remediation due dates are generated based on the risk and the breadth of the vulnerability.

Due dates can be negotiated with the Information Security and Policy team at the time of disclosure. For example, some due dates may be changed for reasons like:. Reliance upon a vendor to implement a fix for a discovered vulnerability. Development time. Retirement of a vulnerable portion of an application Ultimately, it is the responsibility of the application owner to make or coordinate best efforts to remediate and/or adequately mitigate the risks in a timely fashion.

Credentialed scans are scans in which the scanning computer has an account on the computer being scanned that allows the scanner to do a more thorough check looking for problems that can not be seen from the network. Examples of the sorts of checks that a credentialed scan can do includes checks to see if the system is running insecure versions of Adobe Acrobat or Java or if there are poor security permissions governing a service.

Information Security and Policy (ISP) runs Nessus scanners that are capable of running these credentialed scans; however, without accounts on the local machines, we are unable to use this functionality. With this in mind, ISP will create accounts on one of the Nessus scanners for departmental security administrators to do their own credentialed scans.

In order to use the ISP scanners to perform a credentialed scan of a Windows system, the following settings are required by Nessus:. The Windows Management Instrumentation (WMI) service must be enabled on the target. The Remote Registry service must be enabled on the target or the credentials used by Nessus must have the permissions necessary to start the remote registry service and be configured appropriately. File & Printer Sharing must be enabled on the system to be scanned. An SMB account must be used that has local administrator rights on the target.

A non-administrator account can do some limited scanning; however, a large number of checks will not run without these rights. According to Tenable, the company behind Nessus, in Windows 7 it is necessary to use the Administrator account, not just an account in the Administrators group. ISP is currently in the process of testing this and looking for potential workarounds. Ports 139 (TCP) and 445 (TCP) must be open between the Nessus scanner and the computer to be scanned.

Information on the what IP block to open in the firewalls can be found here:. Ensure that no Windows security policies are in place that block access to these services. Two common problems are the SEP configurations that block off the scanners even after the scanners is authenticated and a network access model that sets network access to 'Guest only' permissions (see below for information on changing this).

The default administrative shares (i.e. IPC$, ADMIN$, C$) must be enabled (AutoShareServer = 1). Since these are enabled by default and can cause other issues if disabled, this is rarely a problem. To check if a system has a 'Guest only' sharing and security model go to the Control Panel, open 'Administrative Tools,' and then 'Local Security Policy'. In that window go to Local Policies - Security Options - Network access: Sharing and security model for local accounts. On some Windows installations, this is set to 'Guest only - local users authenticate as Guest' by default.

If this is the setting on your box, you will need to change it to 'Classic - local users authenticate as themselves'. PLEASE NOTE: Some of the settings above may, in some environments, actually decrease the security of a system. If this is the case, once the credentialed scan is performed, it is advisable to return the system to its previous state. A Group Contact Role (GCR) is created by a Department Contact Role (DCR) when a separation of responsibilities is needed. Each DCR will have an org node set, and the GCR will be associated to the department via its parent, the DCR. A Group Contact Role can be used to help departments separate devices into sets that receive (or do not receive) IT support from a Service Provider Contact Role (SP CR).

Additionally, when responses to security incidents is the responsibility of different groups (e.g., a research lab within a larger department, a student systems vs. An admininistrative one) a DCR can create a GCR to receive targeted notices. Service Provider Contact Roles (CRs) are a special purpose contact role. As a service provider, they don't have registered network assets, but they are flagged within NetReg as providing support for another CR. For example, the Service Provider CR might register devices for the Client CR. Service Provider CRs have 'device-based' privileges with the Client CR; they can create, edit and delete devices from the Client CR.

Service Provider CRs can be grouped or departmental. Notifications about security events (compromises, vulnerabilities, etc.) will go to members of both Service Provider and Client CRs. Security notices are routed based upon the most specific registration information available in NetReg.

For example, if an IP address has a registered security contact, the security notice is sent to that contact. If there is no specific IP address registration then the notice is sent to the security contact that claimed the subnet. Notices will also be sent to:. the registrant contact role's service provider if any. its departmental / parent contact role if any,. and any contact roles that have 'CC CR' status for the IP address OR, if the IP addresses is for a DHCP device (in the LIPs subdomain) the security notice will go to whomever was using the address at that time (to CalNet ID).

Overlap is not allowed in NetReg. If two departments share a subnet, during the data conversion the department who claims the most IP addresses for that subnet will get the entire subnet. The other department will get individual IP addresses. Additionally, one CR will own and be primarily responsible for an IP address, although other CRs may be provided shared notification. For complicated situations, e.g., where two different groups are responsible for systems on a subnet, a Contact Role created just for that shared responsibility might be the best solution. NetReg is designed to facilitate communication between security contacts for the purpose of keeping network registration information up-to-date, without revealing private security mailing list addresses or allowing out-of-band communication between security contacts on other issues. If you claim the entire subnet you can view the names of the security contacts that claim individual IP addresses on that subnet.

If you only claim an individual address then you cannot see the names of the other security contacts. There are three types of email generated by NetReg:. FYI emails: These emails are rolled up into a single digest which is sent once per day. Users can opt out of receiving the digest by setting 'Receive FYI digest' to off. However, at least one CR member should continue to receive them.

Notices of 'requests to approve or deny': These are sent within 5 minutes from when the request is made via the NetReg application, and are sent to all members in the CR. Users do not have the option to opt out of receiving these. There are 4 kinds of 'requests to approve or deny' which users may receive:. Request to transfer an individual IP address. (Note: the request can be initiated by either the CR that currently claims it (request to give), or by the CR that wants it (request to take).). Request for CC CR status for an IP address. Request for membership within a CR.

Request to create of a group CR within a department CR. Notices to 'outside' entities (i.e., ISP RT ticketing system, Hostmaster, or IT Policy): These are initiated by NetReg backend processes or sometimes by NetReg users and are cc'd to any relevant CR's membership. For example, when a request is made for a new departmental CR the request will go to Information Security and Policy (ISP). ISP will conduct an intake process and will create the DCR. You've received the message because Netreg has encountered a mismatch between the security contact that claimed an IP address (individually or by subnet) and the security contact that registered a subdomain. (Note: In Netreg the assignment of a subdomain enables the transfer of IP address responsibility to the right party, but does not assign security contact responsibility).

For example, if security contact A registers a subdomain xyz.berkeley.edu and another security contact B claims subnet a.b.c.0/24 and there is a set of hostnames defined in DNS: a.b.c.11 h1.xyz.berkeley.edu a.b.c.12 h2.xyz.berkeley.edu a.b.c.13 h3.xyz.berkeley.edu security contact A and B will each get a message suggesting that the IP addresses be transferred from B to A. Either security contact can initiate the transfer: Security contact A can 'request to take'; B can 'request to give'. If the other party agrees and approves the transfer then B ends up with the subnet and A has 3 individual IP records out of that subnet because of its subdomain registration.

Remember: NetReg does not automatically make the transfer because there may be alternate solutions to resolve the discrepancy. In the above example, security contact A could relinquish the IP addresses, or have their DNS hostname changed to something not in the xyz subdomain. You are receiving this 'IP address to transfer' message so that you can choose the best solution. Information Security and Policy (ISP) takes privacy issues very seriously, and we use the same approach for balancing security and privacy for restricted data hosts as for all hosts on campus.

Monitoring of systems occurs through two methods, monitoring of network traffic crossing the campus border and vulnerability scanning of hosts on the campus network. The methods used to do this are similar for all hosts on the campus network. The enhanced services for restricted data hosts are:. More frequent scanning - network vulnerability scans for NetReg registered hosts occur nightly. A greater range of intrusion detection signatures are reviewed with notifications sent to the security contact. Tata docomo 3g dongle drivers for mac. Elevated responses to alerts – ISP staff are alerted immediately and will attempt to reach an administrator as soon as possible.

Longer retention of network data for future analysis if a breach is confirmed - this can help to confirm if a hacker was able to access the restricted data during the breach incident. A 'vendor' or '3rd-party service provider' is an entity (e.g., a person or a company), separate from the University, that offers something for sale. The roles that are typically involved in participating with a vendor security assessment include the following: Resource Owner or Proprietor Campus unit representative who has overall responsibility for the application (e.g., budgeting and resource allocation). Implementation Project Manager Unit member responsible for the roll-out of the application or service, including (but not limited to) vendor selection, contract specifications, configuration, process-flow design, personnel training, etc. UC Buyer Representative in the UC Procurement department responsible for the vendor contract negotiation. Vendor Representative Staff member of the service provider responsible for completing the Vendor Security Assessment Questionnaire. Ideally, this person is affliated with the IT department and is knowleagable regarding the vendor's security framework.

Often times, the person in this role is a Sales or Customer Support Representative who facilitates communication between the vendor's IT staff and the ISP Assessor. ISP Assessor A member of the ISP analysts team assigned as the primary assessor resonsible for the engagement with the unit. There are several 3rd-party vendor services that are readily available to campus that have been approved for PL1 and PL2 data. Campus units that adopt these 3rd-party services for the purpose of storing and sharing covered data can be assured that these vendors meet campus policy requirements. Campus units that utilize these services for the handling of protected data should keep in mind that careful configuration and management of these applications is required to meet campus policy standards. PL2 Approved Services.

a web-based document management and collaboration system utilizing Microsoft SharePoint. The document imaging and workflow service is a campus service that’s core purpose is to provide automated workflows and document managment and storage and can be integrated with other campus systems if needed. PL1 Approved Services. The bConnected suite of collaboration services, including (bMail, bCal, bDrive). Please visit the bConnected website to learn more about the MSSEI protection level ratings for each of these products:. Units can ensure that 3rd-party service providers meet the campus data security policy requirements for the handling of (PL1) data through the following actions:. Be sure to include the, required for all UC contracts involving 3rd-party access to protected data, without edits, in the service provider contract.

This ensures baseline protection for the University in the event of a data breach, including:. Service provider compliance with applicable laws (e.g., FERPA, HIPAA), regulations and campus policy. Requirements for a vendor information security plan and breach reporting process.

Adequate cyber-insurance to cover the cost of investigating and responding to a breach. Notify the service provider that by signing-off on the Data Security & Privacy Appendix, they are obligated to abide by campus policy, including aherence with the requirements of the (MSSEI) policy for the protection of PL1 data. Although there is less bargaining power with the service provider to address security concerns after the contract has already been signed, it is still a good idea to perform a vendor security assessment for service providers who are handling (PL2) data:. If the overall risk level is acceptable, the unit is assured that the vendor meets campus policy for the protection of PL2 data.

If the overall risk level is High or Critical, it may be necessary to postpone or suspend the service until these issues have been addressed. Vendors may be more inclined to particpate in a security assessment after the contract has been signed, but before the service has been initiated - as billing often does not begin until services have started. For VSAP reports with an overall acceptable risk rating, any medium-level risk findings identified in the report should be discussed with the vendor during the next contract renewal period. For all UC contracts involving third-party access to covered data, the University of California Office of the President (UCOP) requires the inclusion of the. The appendix establishes baseline protection for the University in the event of a data breach.

Campus units that engage with service providers to handle covered data must ensure the appendix is included in new contracts without edits. For VSAP engagements that have been initiated after the contract has been approved, and the UCOP appendix has been ommitted, the final assessment report will include contract related risk findings. These findings are generally of a Critical risk nature, e.g.:. No guarantee of service provider compliance with applicable laws (e.g., FERPA, HIPAA) or campus policies for the protection of covered data. The absence of requirements for a vendor information security plan and breach reporting process.

Inadequate cyber-insurance to cover the cost of investigating and responding to a breach. In these cases, the unit may be required to suspend use of the service until the contract issues have been resolved with the vendor. To request a Vendor Security Assessment Program evaluation for a PL2 system that is vendor managed, review the and then send an email to. Please include the following information:. Name of unit requesting VSAP service.

Project Lead contact information. UC Provisioning Representative contact information (if applicable). Name of third-party vendor/product/service. Service description. List of protected data elements that are known to be processed, stored, or transmitted by the service provider (see the for details).

Estimated number of records containing PL2 data. Security best practices, as well as campus, require the use of supported software for which the vendor will make security updates available in a timely fashion. As vendors are unable to support all previous versions of software, older programs are dropped from support and must be upgraded or removed from the network.

It is especially important to be aware of your operating system “end of life”, as major upgrades often require time and planning. Windows Microsoft publishes for Windows operating systems. If your version of Windows is past the date for extended support, or not listed, your operating system is not supported and you must retire the system or upgrade to a supported version of Windows. When planning for department equipment purchases and upgrades, be aware of any upcoming “end of life” dates for your version of Windows. Mac OS X While Apple does not officially acknowledge the end of support for Mac OS X operating systems, past experience shows that security updates addressing critical vulnerabilities are only released for the current and one previous version of Mac OS X.

When Apple releases security updates for Mac OS X, operating systems with vulnerabilities that are not patched by Apple will be considered unsupported. Mac OS X users should plan on upgrading their operating systems regularly as Apple releases new versions. We recommend updating to either the latest version, or one previous version, no more than 90 days after a new version is released. Current list of Mac OS X versions receiving Security Updates from Apple (as of Dec. 6, 2017):.

Mac OS X 10.11 “El Capitan'. Mac OS X 10.12 'Sierra'. Mac OS X 10.13 'High Sierra' A list of current security updates can be found on the Apple Support site: Other Operating Systems Check with your vendor to confirm whether or not your version is still under support and receiving security updates for known vulnerabilities. By engaging with a service provider, you have the responsibility as the for ensuring compliance with laws, regulations and policies, including standards (UC Business Finance Bulletin and ).

For example, if notice-triggering data is involved, the service (whether on or off campus) must meet the protective measures defined in the campus. Information that is subject to state or federal regulations will have use and disclosure restrictions that must be maintained.

Student records are protected. Medical records are protected by HIPAA, FERPA, and state laws. The Resource Proprietor, in consultation with the, is responsible for determining the level of risk (subject to law, regulation and policy) and ensuring implementation of appropriate security controls to address that risk.

This puts responsibility for evaluation of the service's security controls (e.g., hardening, patching and monitoring) in the hands of the Resource Proprietor. Although not directly applicable to services outside of the campus network, the campus provides a useful set of baseline security requirements. For evaluating cloud service providers that handle PL2 data on behalf of the University, Information Security & Policy (ISP) offers the (VSAP). The VSAP is intended to ensure that campus third-party service providers adhere to the same baseline level of security practices required for campus systems and applications that contain protected information and are managed and maintained by internal campus resources. To request a VSAP evaluation for a PL2 system that is vendor managed, review the and then send an email request to. If there are particular services or types of services that you believe would add significant value, please contact David Willson. For questions concerning IT policy, contact.

For all other questions, contact. Phishing is a type of attack carried out in order to steal usernames, passwords, credit card information, Social Security Numbers, and other sensitive data by masquerading as a trustworthy entity.

Phishing is most often seen on campus in the form of malicious emails pretending to be from credible sources such as UC Berkeley technology departments or financial organizations related to the university. By tricking campus users into giving away their information, attackers can:. Steal money from victims (modify direct deposit information, drain bank accounts). Perform identity theft (run up charges on credit cards, open new accounts). Send spam from compromised email accounts.

Use your credentials to access other campus systems, attack other systems, steal confidential University data, and jeopardize the mission of the campus The goal of most Phishing emails is to trick you into visiting a web site in order to steal your CalNet credentials. Attackers will setup web sites under their control that look and feel like legitimate web sites. Often the Phishing emails will have an immediate call to action that demand you to 'update your account information' or 'login to confirm ownership of your account'. If you enter your CalNet credentials into these illegitimate web sites you are actually sending your CalNet username and password directly to the attackers. Click and review these 5 essential Anti-Phishing tips to avoid being 'Phished':. Additionally:.

If you are worried about an account, call the organization which maintains it (like your bank). Check the email address—does it really match the text of the email? Does it match the legitimate email of the organization it is supposed to be tied to?. Check the security certificate of any website into which you are entering sensitive data. They should usually begin with Some browsers will display padlock symbols in the address and status bars. Anything on a website saying it is safe can be falsified and is not verified by the browser you are using, and so shouldn’t be trusted. Keep your software current.

Internet Antivirus Protection

Install antivirus software. The first rule to remember: Never give out any personal information in email. No institution, bank or otherwise, will ever ask for this information via email. It may not always be easy to tell whether an email or website is legitimate, but there are many tools to help find out. In the body of an email, you might see questions asking you to “verify” or “update your account” or “failure to update your records will result in account suspension.” It is usually safe to assume that no credible organization to which you have provided your information will ever ask you to re-enter it, so do not fall for this trap.

Any email that asks for your personal or sensitive information should be seriously scoured and not trusted. Even if the email has official logos or text or even links to a legitimate website, it could easily be fraudulent. Never give out your personal information.

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. Apple macOS 10.13.x (High Sierra), Apple macOS 10.12.x (Sierra), Apple Mac OS X 10.11.x (El Capitan), Apple Mac OS X 10.10.x (Yosemite), Apple Mac OS X 10.9.x (Mavericks). Intel based Mac computer with 64-bit processor.

512 MB RAM or above ( 1 GB RAM or higher preferred). 256 MB minimum hard disk free space. Internet connection (to download and register the product, for automatic updates of the program and virus database). Optimally standard screen resolution not less than 1024 x 768 pixels. Avast Security does not run properly if you have any other antivirus software installed. How do I download and install Avast Security? To download and install Avast Security:.

Click the link below to download the Avast Security setup file:. Double-click the downloaded file avast.setup.dmg. In the dialog that appears, double-click the Avast setup option and follow the on-screen instructions, then click Install to complete the installation. Click Close.

If you have an Avast Security Pro subscription, you can it from Preferences ▸ Subscription. For detailed installation instructions, read the following articles:.

License and Registration Do I need to register for an Avast Security license? No, registration is not necessary for the free version of Avast Security. After installation, Avast Security is ready to use. You can connect Avast Security to your to benefit from the device management feature. Avast Security Pro requires you to the product with a paid activation code. How do I upgrade to Avast Security Pro from Avast Security?

To upgrade to Avast Security Pro:. Click the Avast Menu bar icon and select Open Avast from the context menu. Click Upgrade on the main Avast Security screen. Follow the on-screen purchase instructions. After purchase, Avast Security Pro automatically activates.

If necessary, you can manually the product from Preferences ▸ Subscription. How do I activate Avast Security Pro? To manually activate Avast Security Pro:. Open the order confirmation email you received after purchasing Avast Security Pro. Locate and copy the activation code from the confirmation email. Click the Avast Menu bar icon and select Open Avast from the context menu.

Go to Preferences ▸ Subscription and click Insert activation code. Type or paste the activation code into the text boxes, then click Activate. You can view the duration of your subscription in the Your current subscription section. For detailed activation instructions, read the following article:. How do I connect Avast Security to my Avast Account? After you Avast Security, you can connect the product to your in the Account section.

To connect Avast Security to your:. Click the Avast Menu bar icon and select Open Avast. Select Account from the left side panel. Enter your Avast Account credentials, then click Login. If prompted, enter your system credentials and click Install helper. For details, read the following article:. What is the difference between Avast Security and Avast Security Pro?

Avast Security is a free product which does not require a paid license to use. Avast Security Pro requires a paid subscription to use. The product includes the same features as Avast Security and additionally includes. Features What is File Shield? File Shield is the main layer of active protection in Avast Security.

It scans programs and files saved on your Mac for malicious threats in real-time before allowing them to be opened, run, modified, or saved. If malware is detected, File Shield prevents the program or file from infecting your Mac. What is Web Shield?

Web Shield is an additional layer of active protection in Avast Security. It scans data that is transferred when you browse the internet in real-time to prevent malware, such as malicious scripts, from being downloaded and run on your Mac. What is Mail Shield? Mail Shield is an additional layer of active protection in Avast Security.

It scans your incoming and outgoing email messages in real-time for malicious content such as viruses. Scanning applies only to messages sent or received using a mail management software (email clients, such as Microsoft Outlook or Mozilla Thunderbird). If you access your web based email account via an internet browser, your Mac is protected by other Avast Security shields. What is Ransomware Shield? Ransomware Shield, available in Avast Security Pro, secures your personal photos, documents, and files from being modified, deleted, or encrypted by ransomware attacks. This feature automatically secures your Pictures and Documents folders and allows you to specify which other folders you want to protect from untrusted applications. Additionally, you can specify which applications are allowed to modify the files in your protected folders.

What is Wi-Fi Inspector? Wi-Fi Inspector, available in Avast Security Pro, is an active protection component which continuously monitors your network and connected devices for threats. What is the Virus Chest? The Virus Chest is a safe place for storing potentially harmful files, completely isolated from the rest of the operating system. Files inside the Virus Chest are not accessible to any outside process, software application, or virus.

For more information about the Virus Chest including how to upload files, read the following article:. What is Avast Passwords? Avast Passwords is an easy to use password manager.

This feature securely stores your sensitive information and enables you to quickly log into your online accounts and complete web forms. To access or manage Passwords, open Avast Security and select Tools. Under Passwords, click Open. Alternatively, open Applications and double-click the orange Avast Passwords icon. For more information about how to set up and use Passwords, read the following article:.

What is Avast Online Security? Avast Online Security is a browser extension that is automatically downloaded when you install Avast Security. Avast Online Security is designed to improve your online security and overall experience when browsing the internet. This extension detects and warns you of phishing attempts or bad reputation websites.

To learn more about Avast Online Security, read the following article:. What is Avast SecureLine VPN?

Avast SecureLine VPN is an application which enables you to connect to the internet via secure Avast VPN servers using an encrypted tunnel to protect your online activity from eavesdropping. SecureLine VPN is a premium feature and requires a paid license to use. To access SecureLine VPN, open Avast Security and select Tools. Under Avast SecureLine VPN, click Open. Alternatively, open Applications and double-click the orange Avast SecureLine VPN icon. For more information, read the following article:. General How do I run a scan?

To run an Avast Security scan:. Click the Avast menu bar icon and select Open Avast. Select Scan from the left panel. Click Start next to the scan you want to run. You can run a thorough scan of the whole system, quickly scan a particular folder or removable drive, drag and drop specific files to be scanned, or run a scan of network devices.

Additionally, you can schedule automatic scans. For more information about each type of scan as well as scan settings, read the following article:. How do I check which version of Avast Security is installed? To check which version of Avast Security is installed on your Mac, click the Avast Menu bar icon and select Show program info. A popup displays your Program version and Virus definitions.

How do I exclude files or websites from scanning by Avast shields? To set an exclusion for an Avast shield:.

Click the Avast Menu bar icon and select Open Avast. Select Preferences from the left panel and ensure the Shields tab is selected in the new window that appears.

Click Settings under the shield you want to set an exclusion for. Click the plus ( +) icon in the table. If you are adding an exclusion for File Shield, select the file and click Choose. For Web Shield and Mail Shield, specify the server and service, then click Add. For detailed instructions on how to set exclusions, read the following article:. How do I exclude files or folders from manual scanning? To set an exclusion for manual scans:.

Click the Avast Menu bar icon and select Open Avast. Select Scan from the left panel, then click Settings in the section of the relevant scan. Click the plus ( +) icon in the table. Select a file or folder, then click Choose. For detailed instructions on how to set exclusions for Avast scans, read the following article:. Troubleshooting What does the status message 'Unable to scan' mean in scan results?

The status message 'Unable to scan' means that the file could not be scanned, possibly due to an encrypted ZIP archive or because the files are currently in use. The status does not mean that there is anything wrong with the file, only that it is not available for scanning. To view details of unscanned files:. Click the Avast Menu bar icon and select Open Avast. Select Reports from the left panel.

Click the downward-facing arrow next to Virus Scan Reports to expand the section. Click Open next to the scan with the unable to scan status. Right click in the scan results window and select Non-scanned. The filenames and paths to files marked Unable to scan are displayed. What should I do if I'm unable to send or receive emails after installing Avast Security?

If you are unable to send or receive emails after installing Avast Security, you can disable IPv6 in Mail Shield preferences. To disable IPv6:. Click the Avast Menu bar icon and select Open Avast. Select Preferences from the left panel and ensure the Shields tab is selected in the new window that appears. Click Settings next to Mail Shield. Untick the box next to Enable IPv6.

Best Antivirus Protection For Mac

If prompted, enter your administrator credentials and click Install helper. What should I do if I'm unable to browse the web or use other software on my Mac?

Avast Security shields detect and block suspicious files, dangerous websites, and unauthorized connections. In some cases, an Avast shield may cause connectivity issues. If you are unable to use online software or browse certain sites, use the troubleshooting steps below to determine if a shield is causing the issue:. Click the Avast Menu bar icon and select Open Avast.

Select Preferences from the left panel and ensure the Shields tab is selected in the new window that appears. Click Disable next to File Shield and perform your original action (for example, if you were unable to access a certain site, try to access the site again). If the connectivity issue persists, click Enable to turn the shield on again, then repeat the above steps for each shield. When you determine which shield is causing the connectivity issue, you can set an exclusion for a certain file, site, or mail server by using the steps in the following article:. How do I uninstall Avast Security?

Avast Security cannot be fully uninstalled by dragging the application to Trash. To uninstall Avast Security:.

Click the Avast Menu bar icon and select Open Avast. Click Avast Security on the menu bar, then select Uninstall Avast from the context menu. Click Uninstall. For detailed uninstallation instructions, read the following article:.