Does Keeping Windows 7 Updated Make Anti-Virus Software Unnecesary?

If you are new to computing, you may wonder if having anti-virus software is really necessary if you keep your system updated. Are updates alone enough to keep a system secure? Today’s SuperUser Q&A post discusses the situation to help a new computer user make the right decision.

Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-driven grouping of Q&A web sites.

SuperUser reader John Sonderson wants to know if keeping Windows 7 updated is enough to stay secure or if he should also have anti-virus software installed:

Is keeping his Windows 7 system updated via Windows Update enough to keep his system secure, or should he install anti-virus software as well?

SuperUser contributors Scott Chamberlain and Frank Thomas have the answer for us. First up, Scott Chamberlain:

Followed by the answer from Frank Thomas:

Have something to add to the explanation? Sound off in the comments. Want to read more answers from other tech-savvy Stack Exchange users? Check out the full discussion thread here.