A new article in Bloomberg Businessweek explores what looked a few years ago to U.S. officials like a massive cyberattack directed against one of the big American stock exchanges, the Nasdaq market. 

Reporters have been piecing together the hunt — not for Red October — but for the origins of dangerous software that was somehow hacked into Nasdaq’s computers. The bad code has long since been eradicated.

According to Bloomberg Businessweek reporter Michael Riley, the malware was discovered by the FBI in late 2010, tracked by the National Security Agency, and determined to likely be Russian in origin.  

Click the media player above to hear Bloomberg Businessweek reporter Michael Riley in conversation with Marketplace Morning Report host David Brancaccio.