1. What’s Your Emergency?

    911 Calls Vulnerable to Spam Attacks

    CHICAGO, IL - DECEMBER 22:  Firefighters salute as an ambulance carrying the remains of a fellow firefighter arrives at the Medical Examiner’s office December 22, 2010 in Chicago, Illinois. Two firefighters were killed and 17 others injured when a wall and roof collapsed during a building fire early this morning. The tragedy occurred on the 100th anniversary of Chicago's Union Stock Yards fire, which killed 21 firefighters when a wall collapsed which was one of the nation's worst tragedies for firefighter deaths until 9/11.  (Photo by Scott Olson/Getty Images)

    Scott Olson / Getty Images

    Denial-of-service attacks are used by hackers to flood Web servers with traffic, slowing it down or, worse, crashing it. That same idea is now being used translated to telephones. Telephony denial-of-service attackers are spammers who call first responders on administrative, nonemergency lines, flooding them with phony calls about nonexistent debt. While 911 lines have yet to be hit, they are the most vulnerable target, according to the Department of Homeland Security.

    Read it at National Journal