Iranian hackers infiltrated the control system of a small dam less than 20 miles from New York City two years ago, sparking concerns that reached to the White House, according to former and current U.S. officials and experts familiar with the previously undisclosed incident.
Terrified by a string of recent hacks, banks are spending billions of dollars trying to fend off a faceless army of digital intruders.
But the biggest threats may come from within.
Banks fear a growing number of employees are unwittingly exposing valuable information to hackers or in some cases leaving digital clues that make a breach possible. To boost their defenses, firms are banning workers from using portable devices such as USB drives, warning employees to be careful what they post on social media and even discouraging workers from posting “out-of-office” replies on their emails.