Hack of AP Twitter Account Falsely Said that the White House Had Been Attacked, Briefly Affected Stock Market

AP Twitter Account was hacked, and the false story of an attack on White House briefly affected stocks.

Second Boston Marathon Bomber Apprehended Alive

The second suspect in the Boston Marathon bombing, who was being sought by police, has been apprehended alive, and is in custody.

Morning Security Brief: Marathon Bombing Suspect Identified as Chechens; One Killed By Police; Other Still Sought

The New York Times "Lede" blog reports that the Boston Marathon suspects, identified as Chechen brothers who had lived in the area about a year, led police on a chase earlier this morning during which police fatally shot one suspect; the other was reportedly still on the run as of 8 a.m.

FBI Releases Photos of Two Suspects, Asks for Public's Help Identifying Them

FBI releases photos of two suspects and asks for public's help in identifying and locating them. They caution that they should be considered armed and dangerous.

White House Press Secretary Jay Carney Confirms Suspicious Letter Intended for President Stopped at Offsite Facility

Speaking at a press conference a little after noon, White House Press Secretary Jay Carney has confirmed that a suspicious letter intended for the President was stopped at an offsite facility and is undergoing further testing. Carney had no new news about the Boston bombings. He encouraged everyone to let the investigation run its course. UPDATE: UPDATE: U.S. Capitol police were questioning an individual who delivered at least two suspicious packages to Senate office buildings, Sergeant at Arms Terence Gaine said," reported New York Daily News earlier today. About 1pm, reports the New Hampshire Union Leader, U.S. Capitol Police "announced the Hart Senate Office Building has reopened after the substance found there tested negative

Morning Security Brief: Update on Boston Bombings, Suspect in Ricin Mailing, History of Pressure Cooker Bombs, and More

Law enforcement has a suspect in mind as the sender of the alleged ricin letter to Senator Roger Wicker. No real suspects or motives have yet emerged in the Boston Marathon bombings. Pressure cookers have been favored by terrorist bomb makers for some time. DHS is questioned on adding Saudi Arabia to Trusted Traveler program.

Bombing at Boston Marathon

Bombs set off at the finish line of the Boston Marathon wound nearly two dozen people and kill several people, according to reports.

New Interim Security Clearance Guidelines Address Issue of Mental Health Counseling for Victims of Sexual Assault

Director of National Intelligence (DNI) James Clapper took steps today to address an issue faced by victims of sexual assault who have or are trying to obtain a security clearance: They may fear disclosing mental health information on their application.

Morning Security Brief: Knives on Planes Defended, Bioterror Attacks, and U.K. Surveillance Laws

Janet Napolitano, head of the Department of Homeland Security, is defending the decision to allow small knives on planes. A new U.S. Department of Agriculture report says that the nation is at increased risk of bioterror attacks. Great Britain may expand its surveillance laws.

Morning Security Brief: Google and Privacy, Suspicious Activity Reports, Cybersecurity, and More

Google gets the message on privacy, GAO examines whether states and feds are sharing information on suspicious activity, Iran steps up support for Syria, and more.

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