The following is a link to the newest scam out there. It's called "Ransomware" I just recently had to clean two computers infected with this particular one. This one freezes their computer and accuses you of committing heinous crimes, like distributing child porn. "You have been viewing or distributing child porn ... violating article 202 of the Criminal Code of the United States of America," says one version, allegedly sent by the FBI. The threats sound real enough that victims are coughing up $200 to pay a "fine," Of course this is a scam to get your $200. Check-out the following link for the full story.
http://redtape.nbcnews.com/_news/2013/04/26/17917497-ransomware-tricks-victims-into-paying-hefty-fines
http://redtape.nbcnews.com/_news/2013/04/26/17917497-ransomware-tricks-victims-into-paying-hefty-fines