Computers are all around us. They assist us in play and work, keep track of patients in hospitals, and regulate crucial manufacturing processes. This ease of use has a drawback since more devices that use computers are targets for hackers.
Antivirus protection scans files and programs to detect threats that could be present. It acts as a real-time protection against cyber attacks. It detects infected programs and files based on their distinctive sign – two lines or assembly code that overwrites the stack pointer for instance – and compares them with a database of known malicious software. If the program matches, the antivirus software stops it from running, or moves it to quarantine so that it can be thoroughly scanned and analyzed.
Unfortunately, malicious software creators continually create new programs that have more subtle and distinct signatures. Antivirus programs must upgrade their databases. Once a virus is detected and added into the detection database hackers will find it more difficult to apply the same signature on other computers.
For that reason, most reliable antivirus programs have many additional features that help protect against a broader range of malware threats. They include:
http://avastantivirusinfo.com/the-peculiarities-of-hardened-mode-in-avast-antivirus
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