In the last few years, Caller ID spoofing has become much easier. Millions of people have Internet telephone equipment that can be set to make any number appear on a Caller ID system. And several websites have sprung up to provide Caller ID spoofing services, eliminating the need for any special hardware.(Via /.)
For instance, Spoofcard.com sells a virtual "calling card" for $10 that provides 60 minutes of talk time. The user dials a toll-free number, then keys in the destination number and the Caller ID number to display. The service also provides optional voice scrambling, to make the caller sound like someone of the opposite sex.
Caller ID spoofing appears to be legal, though many of its uses are not. The Federal Communications Commission has never investigated the issue, spokeswoman Rosemary Kimball said.
Lance James, chief scientist at security company Secure Science, said Caller ID spoofing websites are used by people who buy stolen credit card numbers. They will call a service such as Western Union, setting Caller ID to appear to originate from the card holder's home, and use the credit card number to order cash transfers that they then pick up.
Update: The FCC is now investigating this issue.