How Does Antivirus Work?
Antivirus software is a baseline tool that MSPs use to defend their clients against malicious files and digital threat actors. Antivirus protects against malware by scanning devices, removing threats, and restricting the spread of infection.
How Does Antivirus Work?
Early antivirus programs relied on signature detection, recognizing specific digital fingerprints or patterns (like harmful instruction sequences) within network traffic or in downloaded files. When these viruses were identified, they would be added to the antivirus program’s list of recognized threats. This approach was often limited by the rapid evolution of new attacks, however, as hackers quickly changed file names or programs to evade recognition.
More modern antivirus solutions combine heuristic and behavioral analysis with signature detection to identify threats more effectively. They also employ sandbox analysis to run files in a virtual environment and only permit them to execute once they have been verified as safe. They can also block access to phishing websites, restrict password protection and help prevent unauthorized remote connections to devices.
As an essential part of your security strategy, antivirus should be used in conjunction with other defense mechanisms. Firewalls, for example, offer layered protection at the network or device level and can shield against malware that has bypassed or circumvented antivirus defenses. Intrusion detection systems and IPSs can monitor network activity to detect malware, as well as other threats like brute force or port scans. Secure Web Gateways (SWG) filter and monitor web traffic to block access to malicious sites and phishing sites. Encryption technologies can also provide additional layers of security, converting data into code that can only be read by authorized parties.