Here’s another security scanning package. Secunia PSI will check your computer via scan, then on the fly, for known insecure software and programs that have passed their end-of-life (i.e. no longer being updated) and are therefore considered insecure. By default, the program will only report programs that are "easy to fix" and this is 100% accurate. In most cases, all you’ll need to do is click the "Download Solution" button and run the downloaded update.

I’ve got to say, I thought my new home computer was secure until I ran this program. It’s now 100% ok on the easy level and 98% on the Advanced level. (In some cases fixing an advanced problem will actually break some older software so you’ll probably never be perfect.)

Before you get rid of those old computers (I know you’re just looking for an excuse to do so,) be sure to totally erase those hard drives first. Especially if you’re getting rid of a staff computer which may have ever contained or even accessed patron records! There are several free tools available which have been reviewed by the folks over at the  ReadWriteWeb blog.