Russian hackers used compromised systems at the Executive Office of the President to access the President’s schedule.

Obama and tablet

How could Russian hackers get to the President’s schedule?  CNN reports:

As in many hacks, investigators believe the White House intrusion began with a phishing email that was launched using a State Department email account that the hackers had taken over, according to the U.S. officials.

All the advanced cyber-defenses used to protect the White House were defeated by tricking users with deceptive emails. Spearphishing is not a casual hit and miss activity, it is the precise application of Military Deception. This is the problem that SP Guard addresses by providing tools to identify deceptive emails.