What is a Virus Signature

Antivirus scanners today combine various technologies to help keep systems free from malware. At the heart of most is signature-based scanning. Depending on the scanning vendor, signature updates may be offered hourly, or daily, or sometimes even weekly depending on the type of scanner. Here's a brief look at what a virus signature is - and why keeping them up-to-date is critical for optimum protection. >> What is a Virus Signature