Avast Free Mac Security 2016

Jan 12, 2018 Avast Security offers Macs protection against malware along with advanced features including a password manager and a network security scanner, all for a cost of exactly nothing. Avast Security is a free antivirus that stops malware & finds Wi-Fi security weaknesses. Free Download! In order to view this page correctly, you must have a JavaScript-enabled browser and have JavaScript turned on.

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Avast begins the scan with a standard process that checks the system against a list of known and popular malware/threats. The software uses its Behavior Shield heuristic monitoring in order to study how each and every aspect of the said software behaves.
Avast offers security on two levels: it has a scanner that is able to scan disk for files that can be harmful for your Mac. And it also has a second component that manages the security on the Internet and monitors web browsers for suspicious activities.

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Avast Antivirus provides a range of scans to protect your PC from malware. You can also create your own scan and specify the parameters. Refer to the sections in this article for details about the following Virus Scans:

Smart Scan: a comprehensive scan that detects malware, out-of-date software, browser add-ons with poor reputations, network threats, and performance issues.
Full Virus Scan: a predefined, in-depth scan of your system that checks your storage drives and memory for malware (including rootkits).
Targeted Scan: scans the folders you select when you initiate the scan.
Boot-Time Scan: scans your PC during the next system startup before any malware is launched. Running a Boot-Time Scan during startup improves the chances of detecting and removing malware before it can attack your PC.
Custom scans: scans your PC according to the parameters that you specified for your scan.
Explorer Scan: scans specific files or folders directly from your desktop via File Explorer.

Run a scan

Open the Avast user interface and go to Protection ▸ Virus Scans.
Run your preferred scan:
- Smart Scan: Click the Run Smart Scan button.
- Full Virus Scan: Click the Full Virus Scan tile.
- Targeted Scan: Click the Targeted Scan tile, then select the file or folder you want to scan, and click OK.
- Boot-Time Scan: Click the Boot-Time Scan tile, then click Run On Next PC Reboot.
- Custom scans: Click the Custom scans tile, then click Scan Now on the panel for the scan you want to run.

To run Explorer Scan, right-click a file or folder on your desktop or in File Explorer, then select Scan selected items for viruses in the menu that appears.

Create a custom scan

To create a custom scan:

Open the Avast user interface and go to Protection ▸ Virus Scans.
Click the Custom scans tile.
Click Create A New Scan.
Define the scan parameters. The following parameters are available:
- Scan name: type a name for your scan into the text box.
Customize your scan
- Scan type: select either Full Virus Scan or Targeted Scan depending on what you want your scan to check on your PC.
- Frequency: define how often your scan runs.
Advanced settings
- Sensitivity (Medium by default): the higher the sensitivity, the higher the protection and potential for false positive malware detection. Lower sentivity reduces the potential for false positive detections, but may reduce the effectiveness of the scan.
- Scan for potentially unwanted programs (PUPs): enables Avast to scan for programs that are stealthily downloaded with other programs and typically perform unwanted activity.
- Follow links during scan: enables Avast to scan other files used by the files being scanned for potentially harmful content.
- Test whole files: enables Avast to scan entire files rather than only the parts typically affected by malicious code.
- Scan priority: use the drop-down menu to set your Scan priority (Medium priority by default).
Scan areas
- All Harddisks: enables Avast to scan all hard drives on your PC.
- System drive: the options in this section apply to data that is stored on physical devices such as hard drives and USB sticks.
- All Removable media: enables Avast to scan applications that launch automatically when you insert a USB or other removable device into your PC. Scanning removable media may take a long time due to speed limitations.
- Rootkits: enables Avast to scan for hidden threats in the system.
- CD-ROM & DVD drives: enables Avast to scan CD and DVD drives for malicious content.
- Modules loaded in memory: enables Avast to scan applications and processes that launch after system startup or run in the background.
Packers and Archives
- Scan most common used types: archive commonly used file types such as .zip, .rar, and other executable or installer archives.
- Scan all types of archives: the scan analyzes all archive files, which significantly increases the scan duration.
- Don't scan archives: disables Full Virus Scan from scanning archive files.
File Types
- Content based types (slow): scans files that are typically most vulnerable to malware attacks.
- Name extension based types (fast): scans files with only risky extensions, such as .exe, .com, .bat.
- Scan all files (very slow): scans all files on your PC for malware.
- Perform automatic actions during this scan: tick this option to enable it, then define the automatic action Avast will perform when an infected file is found.
- Shut down computer after scan finishes: enables Avast to shut down your PC after your scan completes.
- Generate report file: enables Avast to create and store a report file automatically after the scan completes.
- Exceptions: click View exceptions, click Add Exception, then locate a file, folder, or web page that will not be scanned by your new custom scan.

Parameters for new Custom scans will save automatically and can be reconfigured at any time. To run a new Custom scan, go to Protection ▸ Virus Scans ▸ Custom scans, then click Scan Now next to the scan you want to run.

Process scan results

After a scan completes, Avast displays all found issues. You can resolve the issues directly on the results screen, or configure each Virus Scan to resolve issues automatically upon detection.

Some detections may require a separate paid license to resolve.

Smart Scan

To learn more about resolving found issues after Smart Scan completes, refer to the following article:

Other Virus Scans

You can define how each scan automatically reacts to a found issue.

Open the Avast user interface and go to ☰Menu ▸ Settings.
Click Protection in the left panel, and ensure Virus Scans is selected.
Click the scan you want to define automatic behavior for.
Scroll down, tick the box next to Perform automatic actions during this scan, then select which action you want Avast to perform when an issue is found. The following actions are available:
- Fix automatically: Avast attempts to repair the file. If unsuccessful, the file is moved to the Virus Chest. If that fails, Avast deletes the file.
- Move file to Virus Chest: Avast sends the file directly to the Virus Chest where the file cannot harm your system.
- Delete file: Avast permanently removes the file from your PC.

How Does Avast Mac Security Scan For Malware

If you want Avast to do nothing when an infected file is found, untick the box next to Perform automatic actions during this scan (not recommended). To manage unresolved scan detections at any time, go to Protection ▸ Virus Scans ▸ Scan history.

Special cases

For incomplete scans, an error message indicating the reason the scan was unable to complete is visible on the scanning screen. Although there are many different reasons a scan may be unable to complete, some of the most common reasons are:

Archive is password protected: indicates that the file is password protected. Some programs use password protected archives to store their data even if you did not set the password. Depending on your scan settings, only the 'wrapper' file is scanned while the archive content is not.
Archive is corrupted: indicates that the file may be corrupt because it was only partially downloaded or saved to your harddisk, or that it is a special type of archive.
The process cannot access the file because of another process: indicates that another process or program was accessing the file during the scan.
The file is a decompression bomb: indicates that the file was too large to be decompressed for malware analysis. Decompression of large files generates vast amounts of data which can cause your system to be unstable or cause it to crash.

Files that are stored in archives cannot harm your system unless they are decompressed.

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Adjust scan settings

Although customizable settings are available for some Virus Scans, we recommend you only modify settings for Custom scans. To configure scan settings:

Open the Avast user interface and go to Protection ▸ Virus Scans.
Click Settings (the gear icon) in the top-right corner of the Virus Scans screen.
Select the scan you want to adjust settings for.
Configure your preferred settings.

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For more information about Virus Scan settings, refer to the following article:

Create and use Rescue Disk

If you suspect your PC is infected with malware and all other Virus Scans (including the Boot-Time scan) were unable to resolve the issue, you can use Rescue Disk. Rescue Disk enables you to scan your PC when your system is not running. This method significantly increases your chances of detecting and removing malware because the malware is detected before it is able to counteract.

For more information about Rescue Disk, refer to the following article:

Review scan history

To review scan history:

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Open the Avast user interface and go to Protection ▸ Virus Scans.
Click Scan history.
Hover your cursor over a scan panel, then click the down arrow to see the scan details.

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Click the red X in the top-left corner to return to the main Virus Scans screen.

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