The number of suspicious activity reports that involve identity theft increased by 123% between 2004 and 2009, according to a report issued by the Treasury Department's Financial Crimes Enforcement Network.
During the same period, there was an 89% increase in SAR filings.
In 2004, there were 15,445 SARs with identity theft, and there were 36,210 last year, according to the report.
The report said that the largest single kind of identity theft involved credit cards, which was cited in 45.5% of the filings sampled. Of those, 30% involved the takeover of an existing account and 17% involved setting up a new account.
In 31% of the filings, the abuse involved loan accounts, among those 56.5% involved student loan fraud.
In 27.5% of the cases, the victim knew the person suspected of stealing the identity and 4% of the filings involved computer-assisted identity theft.