A Bank of America worker installed malicious software on his employer's ATMs that allowed him to make thousands of dollars in fraudulent withdrawals, all without leaving a transaction record, according to federal prosecutors.

Rodney Reed Caverly, 37, was a member of the bank's IT staff when he installed the malware. The Charlotte, North Carolina, man made fraudulent withdrawals over a seven-month period ending in October 2009, according to prosecutors, who've charged him with one count of computer fraud.