We probably don't need to tell you this but be careful what you upload to the Internet -- especially pictures. The bad guys are now using photos to commit online fraud.

Imagevision.com's Mitch Butler says it's especially common with dating sites.

"Someone will take a picture of someone and create an extra account or hundreds of accounts with the same imagery."

Butler says phishing scams involving photos are also common.

"One of the things that criminals do is set up account profiles for phishing schemes to hopefully trick or lure people into giving them personal information that would allow them to steal credit card information, etcetera, etcetera."

You might receive an email with your photo -- possibly Photoshopped into making it appear you're nude -- threatening blackmail. Butler says he's helping dating sites and social networking sites identify fraudulent use of photos.