http://www.avast.com/en-in/registration-free-antivirus.php
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Avast Antivirus 2015 provides the essential security you need to protect your PC from hackers and thieves. In addition to the best antivirus and anti-malware protection possible, the new Home-Network Scanner scans your network for any issues, while Browser Cleanup lets you remove annoying plugins, and SmartScan allows for one-click scanning.
Home Network Security: Scans your network and routers for potential issues to help prevent attacks.
Antivirus and Anti-malware: Avast sends out automatic VirusLab updates throughout each day to make sure your protection if fully up-to-date.
Browser Cleanup: Avast Browser Cleanup removes annoying toolbars and search settings, allowing you to choose the settings you want.
SmartScan: With just one click, you can scan for viruses, software updates, network problems, and performance issues.
Core Protective Features and Technologies: Antivirus & antispyware, Home Security Network, HTTPS scanning, SmartScan, Software Updater.
What’s new in this version:
- Fixed problem with missing NG component under certain circumstances.
- Fixed a bug in the keyboard driver causing problems with keyboards.
- Better compatibility of the WebShield with some https pages (e.g. spotify, waze, etc.).
- SecureDNS – better logic of server selection resulting in performance improvements.
- Fixed reported crashes.