The data breach of the marital cheating site Ashley Madison may result in much more than public shame and broken marriages. It could turn out to be a security threat given that the stolen data includes 10,000 email addresses belonging to U.S., British and Australian government officials. It is not known if these addresses are real or fake. But the possible compromised security of U.S. military officials has prompted the Pentagon to investigate. Although adulterers are – by definition -untruthful, it remains to be seen if the personal data of more than 33 million Ashley Madison members poses a real threat to national security.