what was the most famous zero day attack 
while many prominent examples of zero day examples exist many cite the sony pictures hack of 2014 which utilized a previously unrecognized vulnerability to install malware unnoticed which then was used to delete or damage files involved with new films causing millions of dollars in damages and a scarred reputation for sony s apparent lack of security the attack many believe was carried out by north korean agents in response to the release of the film the interview which parodied n korea s leader kim jong un 5