All a scammer needs to file a fraudulent return to collect your tax refund is your name, Social Security number, birth date and a computer.

According to the U.S. Justice Department, this scam – known as stolen identity refund fraud – results in annual losses of more than $2 billion to the U.S. Treasury.

Follow these steps to prevent scam artists from stealing your tax refund:

Spot fake calls from the IRS

The IRS impersonation scam is a relentless operation.

What is it? An email or website disguised as a trustworthy entity and designed to fool you into downloading malware or giving your information away.

Earlier this month, hundreds of workers in Mumbai were investigated and dozens arrested for one of India’s largest scams. Targeting thousands of US citizens, the call center workers posed as IRS officials “in order to steal tens of millions of dollars, Indian police have said.” With a trained American accent, employees would trick American citizens into thinking they had defaulted on taxes and “were facing prosecution by the IRS.”