coondoggie writes "By all accounts, many of the massive data breaches in the news these days are first revealed to the victims by law enforcement: the Secret Service and Federal Bureau of Investigation. But how do the agencies figure it out before the companies know they have been breached, especially given the millions companies spend on security and their intense focus on compliance? The agencies do the one thing companies don't do. They attack the problem from the other end by looking for evidence that a crime has been committed. Agents go undercover in criminal forums where stolen payment cards, customer data and propriety information are sold. They monitor suspects and sometimes get court permission to break into password-protected enclaves where cyber-criminals lurk."