Hackers compromised Twitter accounts of The Associated Press on Tuesday, sending out a false tweet about an attack at the White House.
The false tweet sent at 1:07 p.m. (EST) said there had been two explosions at the White House and that President Barack Obama was injured.
The attack on AP's Twitter account and the AP Mobile Twitter account was preceded by phishing attempts on AP's corporate network.
The AP suspended its Twitter account, and disabled others, following the hack. The news and sent out a message over the wire service to say they had been hacked and the White House tweet was false. At no time was the AP news wire compromised.
AP spokesman Paul Colford said the news cooperative is working with Twitter to investigate the incident. The AP has disabled its other Twitter accounts following the attack, Colford added. The news service also said it will give an update on its Twitter accounts as soon as possible.
The cyber attack is the latest in a string targeting international media groups, and the single Tweet struck a blow to the stock market.
Asked about the incident at a press briefing, White House spokesman Jay Carney said the President is fine.
"I was just with him," Carney said.
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PHONY TWEET SENDS DOW TUMBLING
The Dow Jones Industrial Average plunged more than 150 points in less than two minutes from the Tweet's release, but it quickly recovered -- trading up 130 points at 14,697 after 2 p.m.
Other markets also reacted to the false report with brief dips, including:
- Crude oil
- U.S. government bond benchmark yields
- 10-year Treasury note yields
Traders shifted money toward low-risk investments, but the turmoil was short-lived. By 1:13 p.m., all were trading at roughly the same level they were before the hack.