How Does Antivirus Software Identify Potential Viruses?

September 5, 2023 admin Comments Off

As cyber-terrorists and criminals continue to develop newer, more deadly malware and viruses that could infiltrate systems and delete data, corrupt files and cause other damage, it’s important for you to know how your antivirus software identifies potential threats. The majority of antivirus programs are designed to identify and remove malware before they could cause harm. They accomplish this by analysing and analyzing your system files, data as well as computer programs.

Antivirus programs have traditionally used signature-based detection, which compared documents that are received by your device to a database of known viruses signatures. This method searches for the fingerprints and then matches the file or program to the virus. It will alert you if the match is discovered. This method is efficient, but hackers continue to create new and different types of malware. To detect them, antivirus programs must keep their definition files updated with the latest malware samples.

Another method employed by hackers to evade antivirus scanners is to use encryption to protect the malware payload. Once a virus is encoded, it can bypass scans and signatures because it’s not executable. This is usually accomplished by attaching a tiny header to the virus. This lets it skip the counter and execute the virus on the first chance.

Antivirus software employs various methods to look for viruses that include heuristic-based detection, as well as behavior-based detection. Heuristic-based detection is similar in concept to signature-based detection in that it analyses the behavior of a program, looking for tendencies and patterns. Heuristic detection, which uses the trial-and-error method, can detect viruses that signature-based methods are unable to.

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