How do different types of antivirus work?

"the 101" Episode 3

For the past few decades there's really only been one approach, but lately we are seeing new technologies being applied to endpoint security that can address the new challenges we face on a daily basis.

This episode covers the three main approaches – signature, machine-learning and behavioral – and helps define how they work, what they do well and where they may be lacking. Today we ask: "How do different types of antivirus work?"