How does antivirus software detect malware?

The main reason users seek out an antivirus program is to protect their computer against malware threats that can be spread through websites, email attachments, USB keys and other surprising vectors. Antivirus software has grown increasingly complex over the years to combat the creativity of…

Article Link: http://www.lavasoft.com/mylavasoft/company/blog/how-does-antivirus-software-detect-malware