Most companies won’t disclose an attack unless required to by law or regulations. The Aurora attacks out of China that hit Google, Adobe, Intel, and an unknown number of other organizations in the U.S. Google’s discovery of the attacks demonstrated how victims can benefit from collaboration with one another and law enforcement. FBI director Robert Mueller last week in a keynote address at the RSA Conference 2010 said while today it’s the exception rather than the rule for organizations to report cyberattacks to the bureau, he promised some big changes.”]
Source: https://www.darkreading.com/attacks-breaches/voluntary-breach-disclosure-rare-but-valuable