: This is the traditional method where the software compares file code patterns (signatures) against a database of known threats. It is highly effective for established malware but cannot detect "zero-day" threats that haven't been cataloged yet.
: Suspicious files are run in an isolated virtual environment (a "sandbox") to safely observe their behavior without risking the main system. How Does Antivirus Software Work? – AZMATH
Antivirus software protects your computer by detecting, blocking, and removing malicious software (malware). Modern solutions employ a multi-layered detection pipeline to catch both known and emerging threats. Primary Detection Methods : This is the traditional method where the
: AI algorithms are trained on massive datasets to distinguish between "good" and "malicious" code patterns, allowing for better detection of brand-new malware families. Responding to Threats Responding to Threats : Instead of looking at
: Instead of looking at what a file is , this analyzes what a file does . If a program attempts suspicious actions—like encrypting files (ransomware behavior) or disabling security tools—it is flagged, even if the software has never seen that specific code before. Advanced Protection Features
: Many products send data about unknown files to a cloud database for rapid analysis based on collective threat intelligence from millions of other users.
: Completely deleting the malicious file or application from the device. What Is Antivirus Software? - Sophos