These programs perform most of their data processing on a provider’s server rather than the user's computer.
It uses a small "client" program on the device that communicates with the cloud to analyze files.
Specialized tools designed to detect and remove specific infections.
It scans files and compares them against a database of known malware "signatures" (unique bits of code).
It is less effective against "Zero-Day" threats—newly created viruses that haven't been added to the database yet. 4. Heuristic-Based Antivirus