What can crackers really do to your PC?

Monday, 27 October 2003, 8:40 AM EST

get a lot of e-mail from readers asking what criminal hackers can and can't do to the average home PC. In most cases, I'd say home systems are fairly safe, if only because each computer is a needle in a giant haystack called the Internet. While the profile of the criminal hacker (for whom I prefer the term "cracker") suggests a young male who is both patient and obsessive, most of these individuals would rather stalk the big fish--university, government, and commercial systems--than your computer.

I don't mean to say home PCs aren't targets. They are. Crackers keep track of IP addresses assigned by Internet service providers to dial-up, DSL, and cable-modem users. Some regularly scan those addresses, looking for PCs that are connected to the Net and that have known security vulnerabilities.

These lists of vulnerable computers are often traded or sold over the Internet, and help virus writers plant their viruses quickly. That's why it's important to use firewall software and keep all your applications updated with the latest patches.

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Using Hollywood to improve your security program

Posted on 29 July 2014.  |  Tripwire CTO Dwayne Melancon spends a lot of time on airplanes, and ends up watching a lot of movies. Some of his favorite movies are adventures, spy stuff, and cunning heist movies. A lot of these movies provide great lessons that we can apply to information security.

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