One thing which is good to do periodically is to audit your PC against online threats. Doing so is very easy and locking down the most obvious entry points is one of the simplest ways to stay safe. This process is made easy by using some of the free tools available from Audit My PC.
This site offers tools which can test your firewall, help prevent spam, scan your computer for viruses and malware or install a firewall on your machine (if you don’t have one already). Additionally, Audit My PC offers tools to test your connection speed and generate sitemaps for your websites.
Overall, this is a pretty nifty site. Even if you don’t use everything it offers, it is good to have this stuff all at a single location.

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Gonna check this one out now! Thanks for the post Jason.
Have you checked out Shields Up?
[https://www.grc.com/x/ne.dll?bh0bkyd2]
If so, what do you think of it?
I use Shields Up occasionally to test/verify our firewall settings at work. It is a solid tool and I actually ran a tip on this quite some time ago.
Jason, you should do some best of posts.
Compile all your best tips about a certain category or topic.
I wouldn’t know where to start! I’ve probably posted close to 1,000 tips and going through them would be quite a task…
Hey Jason, have you ever heard of Threatfire? I got it about a month ago and I think its great, but wondering if you had any opinions on it
I ran a tip about Threatfire a while ago.
Personally, I don’t use security programs (I only use WinPatrol), however the concept seems solid.
Most of the GUI ones modify either something on the hard drive or something in the registry every time they’re run. This can cause problems if your aim is to make a forensics image of the computer for later examination in connection to a crime. In most cases, the command line based security tools don’t make significant or any modifications to the file system or registry, or could be set up to not make mods.