11.   Actually, it says quite a lot about computer security, none of it encouraging.

12.   But a big hurdle is computer security.

13.   But he and other employees say the university faces a difficult choice because increased computer security means decreased student access.

14.   But in computer security, such things are not always black and white.

15.   But it is a strange sort of crime, since the owners of the invaded computers probably were unaware of the foray, computer security experts said.

16.   But that virus is in widespread circulation and has used up countless hours of productivity as workers try to remove the virus and improve computer security.

17.   But when it comes to computer security, the options are few.

18.   By targeting a computer with a direct link to the Internet, a computer security professional or a digital thief can get an annotated blueprint detailing weak spots.

19.   Computer network security is a real and growing problem.

20.   Computer security is an oxymoron, they say, and SATAN points out how exposed the Internet is.