Computer tech support scams have been around for years, and while the basic premise remains the same, they have evolved.
Early on, scammers sought victims by e-mail. More recently, they've cold-called people listed in public directories and on the national do-not-call list.
The latest mutation targets businesses, according to an alert by the Internet Crime Complaint Center, or iC3, on Wednesday.
In many scams, a company contacts you, assumes the identity of a major computer company, falsely tells you your computer has some grave deficiency and for a fee, the company offers to fix the problem.
The caller then gains access to your computer by directing you to a website and downloads malicious software. Various programs can root out your personal data, disable your computer's security system or monitor your keystrokes. Sometimes you're sold worthless software or software available for free elsewhere.
While regulators and computer companies have worked to combat the scams, the battle is far from over, in part because the only barriers to entry in the industry are a phone, a computer and a way to process credit card charges.
And profits are large. Tech support scams cost victims an average of $875, according to survey results released by the Microsoft Corp. in 2011.
Microsoft surveyed 7,000 computer users in the United States, Canada, Ireland and the United Kingdom. Fifteen percent had received a call from a tech support scammer. About one-fifth of those allowed access to their computers or divulged credit card information. The average cost to fix damage to computers was $4,800 in the United States.