Brown told ABC News he decided to go public and admit his crimes in an effort to warn airline passengers about what could happen with luggage screened by TSA.
Even the special TSA locks sold for luggage won't work, Brown says, because TSA employees learned how to pick them without being detected.
The convicted TSA officer said he believes that most people working for the agency are honest but that poor morale and a low pay scale led some to be tempted to steal.
"They didn't think it was okay, but they did it and said, 'I don't care. They ain't paying me. They're treating me wrong.' But then when people started seeing they could profit off of it, then it became massive," said Brown.