免費防毒軟體到底夠不夠用？Avast Free Antivirus 能擋什麼

What's new in this version:

Avast Free Antivirus 17.9.2322
What's new:
- Now you can send feedback and bug reports from Settings > About
- Recycle Bin content can now be shredded via Windows contextual menu (Avast Premier only)
- Redesigned Scan & Shields screens in the Protection menu for easier navigation
- Redesigned Avast Passwords UI for easier use
- More detailed status reporting to Windows Security Center in Windows 10 Fall Creators Update
- Nested virtualization support for AMD CPUs
- Better proxy detection by setup and update from Windows settings

Fixed:
- Fixed a problem with white UI (you might see more processes AvastUI.exe now, but that's OK)
- Sensitive Data Shield now works with Windows XP and Vista
- Anti-Phishing Protection in Web Shield now works with Windows XP
- Clicking Scan Details in the Notification Center no longer starts another scan
- Fixed Avast service crash when a license expires
- Fixed performance scan in Performance > Cleanup Premium
- Fixed issue where Behavior Shield sometimes cut off a user’s Internet connection
- False positives can now be reported directly from threat detection warnings (File Shield)
- Fixed boot issue on Windows XP when Virtual PC driver is installed
- Fixed BSOD caused by conflict between DELL percsas3 and Avast Self-defense drivers

Avast Free Antivirus 17.8.2318
Fixed Bugs:
- Erasing malware detected and removed by Behavioral Shield from the chest when other malware was restored
- Adding custom folder to be protected by the Antiransomware Shield

Avast Free Antivirus 17.7.3660
- Change log not available for this version

Avast Free Antivirus 17.7.3631
- SafeZone Browser is not installed with clean AV installation anymore
- Several bug-fixes

Known issues:
- Setup: Cleanup component cannot be uninstalled via modify installation or from UI
- Setup: Passive mode is not activated when another Antivirus solution is already installed
- Game Mode: All game mode rules are turned off by default (this setting is reloaded after restart)
- Affects both clean installation and update
- Sensitive Data Shield: When protected documents are modified, such documents are no longer protected
- Sensitive Data Shield: When protected document is stored on device which is unplugged and plugged back to the computer, such documents are no longer protected
- Sensitive Data Shield: Changing rule allow/block in settings are not saved (the rule cannot be changed due to this)

Avast Free Antivirus 17.6.3625
- We found bug in licensing, so we just released new version with fix

Avast Free Antivirus 17.5.2303
- This version contains fixes under the hood, mainly for SMB customers

Avast Free Antivirus 17.5.2302.0
- New feature: Ransomware Shield (for Internet Security and Premier)
- New warning system on dashboard
- Warnings added to notification center
- Redesigned some popups
- Notification counter added to tray icon
- Fixed issues with public profile in Firewall

Avast Free Antivirus 17.4.3482.0
What's new:
- updated GUI engine
- fixed notification of finished Smart Scan, now it correctly shows the results instead of starting the scan again
- fixed several crashes in Web Shield (including corruption of large downloaded files)
- fixed crashing during update of virus definitions on 32-bit OS
- viruses detected by File Shield are now correctly moved to quarantine
- firewall profile is correctly recognized also when you connect via different network adapters
- fixed problem with empty windows profile on Windows 10 after avast update
- right-click explorer scan now runs in main window

Avast Free Antivirus 17.3.3443.0
- 2291: Fixes crash in installer

Avast Free Antivirus 17.3.3442.0
Fixed:
- Firewall: Fixed internet connectivity not working after update (until restart) on Win XP, Vista and 7 - should now always work immediately
- HNS: Fixed incorrectly displayed vulnerabilities - vulnerability info is now correct
- Web Shield: Fixed SSL scanning issue on some sites - sites now load correctly
- Issues with login to roaming profile after update
- Passwords: Fixed issues with self-authorization and import from Easy Pass
- Issue with installation on Braswell CPUs
- Network problems after update on Vista
- Numerous crashes fixed

Avast Free Antivirus 17.2.2288
Fixed:
- not working User interface after update
- problems on Windows Vista after update
- issues with SecureLine license after update
- conflict with Comodo firewall
- installation of web extensions on 64-bit version of Firefox
- problems with opening Avast UI after installation
- security issue in SafeZone browser banking mode

Avast Free Antivirus 17.1.2286
- Improved user interface - simplified navigation, new brand colors, notification center
- Behavior Shield - better protects you against ransomware by monitoring running programs for suspicious behavior
- Game mode - helps reduce distractions and lag times by automatically prioritizing your game’s performance and suspending all unnecessary background notifications and processes while you play
- Free version no longer requires email registration
- Performance improvements - faster webpage loading and app launching thanks to optimized hashing algorithms
- Wi-Fi Inspector - previously called Home Network Security, this feature now detects even more problems and vulnerabilities on both home and public networks
- Passwords - faster UI and improved browser integration
- Real Site - our new name for SecureDNS, which prevents DNS hijacking to help you avoid visiting fake websites

Avast Free Antivirus 12.3.2280
Fixed:
- Slowing down computer during installation
- Unavailability to select other language during installation

Avast Internet Security 2016 12.3.2279
New:
- Passive mode - new compatibility mode, which should solve compatibility issues, when Avast is being installed on a pc, where other AV is installed (and registred to WSC), Most of the shields are turned off, Avast should be updatable.
- Added SafeZone browser, Security browser extension and SafePrice extension to Settings->Components for better management

Fixed:
- BSOD for Skylake processor running Windows 10 Anniversary Update
- Randomly opening Avast UI bug
- SafePrice browser extension component is not installed during update when Browser extension was not installed in the previous version
- Compatibility problems with PICO(Bash) processes on Windows 10 Anniversary Update
- Incorrectly displaying firewall network profile notification
- Avast is correctly recognized in Windows Security Center after upgrade to Windows Anniversary Update
- Showing all passwords as reused in passwords list

Avast Free Antivirus 12.2.2276
- Regular monthly program updates - automatic and silent, configurable via Settings
- Fully compatible with Windows 10 Anniversary Update
- The new Components menu in program Settings - an easier way to control which components are installed and running

Avast Free Antivirus 12.1.3076
- Change log not available for this version

Avast Free Antivirus 11.2.2738
- Change log not available for this version