Police officers do an important job in our society, putting themselves in harm's way for the public good. When a police officer pulls you over, it's a natural assumption that they're the real deal. Very rarely it will be an impostor -- and it always makes big news. In the Internet world, however, it's much harder to tell friend or foe.

The hottest way to steal your personal info right now is through pop-ups or other ads that claim to be for antivirus programs. A new report suggests that 30 million of us have been fooled in this way. That's 1 in every 7 adults! Panda Labs -- a company selling legitimate antivirus software -- reports there's now 7,000 phony solicitations from the bad guys out there in cyberspace.

Don't click on those pop-ups about antivirus software! Ignore those e-mails about free services!

A North Carolina State study found that a majority of us believe when a dialog box pops that the people initiating the Internet chat are legit. Don't fall for it. The Internet does not have brave men and women running around acting as police officers to protect you. You've got to be your own cop on the beat.

If you need antivirus software, see our suggestions for free or low-cost options. And heed this warning: Don't visit our messageboards looking for a link. Yes, we police our forums with the help of a team of moderators, but we can't ensure that every thing on the forums is completely legit.

In related news, be wary of e-mails promoting secret shopping and mystery shopping. It used to be that you'd get taken for $20 or $30, but now the scammers are angling for $2,000 or more. You should never pay to be a mystery shopper -- whether it's $20 or $2,000.

Finally, Christa read an article in the Pocono Record that reports the money transfer scam -- an oldie but baddie -- is back. Here's how it works: You're contacted to act an intermediary who transmits money for others. You're sent a check and told to keep 10% of it and wire the rest to a certain person or business. It turns out to be a stolen checking account number, perhaps from a real business. When the police come after you for cashing fraudulent or washed checks, that's when you get to wear some new jewelry -- handcuffs! Don't do it!