Hands Off My PC!

A m

aniacal army from Alabama is attacking my home computer and trying to seize control of it. I know that sounds a little paranoid, but it's true. And your computer could be next. Let me explain.

Like most people, I've lived a dual life when it comes to Internet security. At the office, I'm well protected by a corporate firewall. That makes sense; lots of people would probably like to crack AOL Time Warner's computer system. But at home, I have no protection at all. C'mon, who wants to dig through the to-do lists and video poker games on my Power Mac G3?

I decided to find out. So a few weeks ago, I installed Norton's Personal Firewall. (Other leading brands include Network Ice's Black Ice Defender and Zone Labs' ZoneAlarm 2.1.) The software promised to block outsiders from getting into my computer and to keep a log of the IP address or domain name of everybody who tried.

As home-hacking victims go, I fall in the middle of the spectrum. On one hand, I recently installed a high-speed DSL service. These "always on" connections are catnip to hackers because they are stationary targets, vulnerable to attack 24 hours a day. On the other hand, I have a Mac, and most mischiefmakers prefer Windows PCs.

Once the firewall was up, I promptly forgot about it. By the end of the day, I hadn't got a single ping. So much for the great home-hacking threat. But the next morning there was a pop-up on my screen. A "remote procedure call" had come in overnight from an anonymous computer with an 11-digit IP address. The firewall blocked it. Since then, hardly a day has gone by without one and sometimes 10 or more attempts by outsiders to get into my hard drive.

The hits are a testament to the power of the Internet to bring us closer together. Computers from as far away as Thailand and Japan have found their way to my humble apartment in New York City. A Canadian identified only as guelphppp217545.sympatico.ca must have wanted in badly. He, she or it tried 15 times over the course of a few minutes. Now, when I get home at the end of the day and check my e-mail, I also look to see who's been knocking at my computer door. I'm on to you, newteq.com.tw, telocity.com and pascal-jp.com.

But who are all these guys, and what do they want? It turns out that the domain names and IP addresses that show up in the log may not belong to the people doing the dirty work. Hackers often commandeer other people's computers or ISPs to mask what they're up to.

As for what they want, a lot of the hits are harmless. Some may even come from applications, like Napster, that I have authorized to run. But at least some of them are probably hackers trying to rummage through my files, hoping to lift my credit-card number or empty my bank account.

And yes, one pop-up advised me that maniacalarmy.org was trying to get into my computer. I checked out the domain name, and it belongs to a computer company in Birmingham, Ala. The people who work for the company may be perfectly innocent, although they have been dodging my phone calls. Still, as long as maniacs of any kind can access my computer through my phone line, I'll be keeping the firewall up.

Related Links
Symantec.com
Norton Personal Firewall

Network Ice Corporation

Zone Lab's ZoneAlarm Pro

CNN.com Technology
How Personal Firewalls Work

CNN.com Technology
Tools: Sites to test personal firewalls for holes

But please send e-mail only to Adam's office: Cohen@time.com