It's not every day that I have an FBI agent who's also a computer security expert come speak to my class, so I invited other students and friends to come hear him speak. On the night of Dave's talk, we had a nice cross-section of students, friends, and associates in the desks of my room, several of them "computer people," most not.

Dave arrived and set his laptop up, an IBM ThinkPad A31. He didn't connect to the Internet - too dangerous, and against regulations, if I recall - but instead ran his presentation software using movies and videos where others would have actually gone online to demonstrate their points. While he was getting everything ready, I took a look at the first FBI agent I could remember meeting in person.

Dave is from Tennessee, and you can tell. He's got a southern twang to his voice that disarms his listeners. He talks slowly, slightly drawling his vowels, and it sort of takes you in, making you think he's not really paying attention, and then you realize that he knows exactly what he's doing, and that he's miles ahead of you. He wears a tie, but his suit is ready to wear and just a bit wrinkled. His dark hair is longer than you'd think, hanging below his collar, further accentuating the country-boy image, but remember, this country boy knows his stuff. All in all, he gives off the air of someone who's busy as heck, too busy to worry about appearances, and someone who's seen a lot of things in his time.

Dave had some surprises up his sleeve as well. You'll remember that I said he was using a ThinkPad (running Windows!). I asked him about that, and he told us that many of the computer security folks back at FBI HQ use Macs running OS X, since those machines can do just about anything: run software for Mac, Unix, or Windows, using either a GUI or the command line. And they're secure out of the box. In the field, however, they don't have as much money to spend, so they have to stretch their dollars by buying WinTel-based hardware. Are you listening, Apple? The FBI wants to buy your stuff. Talk to them!

Dave also had a great quotation for us: "If you're a bad guy and you want to frustrate law enforcement, use a Mac." Basically, police and government agencies know what to do with seized Windows machines. They can recover whatever information they want, with tools that they've used countless times. The same holds true, but to a lesser degree, for Unix-based machines. But Macs evidently stymie most law enforcement personnel. They just don't know how to recover data on them. So what do they do? By and large, law enforcement personnel in American end up sending impounded Macs needing data recovery to the acknowledged North American Mac experts: the Royal Canadian Mounted Police. Evidently the Mounties have built up a knowledge and technique for Mac forensics that is second to none.

(I hope I'm not helping increase the number of sales Apple has to drug trafficers.)

UPDATE: Oh, one more, thing, from an anonymous tipster.

Here's how Microsoft recommends you protect yourself from malicious URL-spoofing, phishing, and other spam-scam tricks:

The most effective step that you can take to help protect yourself from malicious hyperlinks is not to click them. Rather, type the URL of your intended destination in the address bar yourself. By manually typing the URL in the address bar, you can verify the information that Internet Explorer uses to access the destination Web site. To do so, type the URL in the Address bar, and then press ENTER.

Now that's the wave of the future right there. Good going, Microsoft.