David E. Sanger

Officials did not disclose the number of Obama's emails that were harvested by hackers, nor the sensitivity of their content.

A new study concludes that beyond the Sands attack, Iran has greatly increased the frequency and skill of its cyber-attacks.

A recently disclosed NSA document describes the increasing use of cyber-weapons by the US and Iran against each other.

The long history of quiet cooperation between Washington and America's top tech companies was founded on the assumption of mutual interest.

In response to questions about the matter, a senior Department of Homeland Security official confirmed that the attack had occurred.

Adm. Michael S. Rogers said the damage done overall by a year of revelations does not lead him to the conclusion that "the sky is falling."

Department of Homeland Security said it needs to expand its cyber-security force by as many as 600 hacking specialists to keep pace with the rising number of threats.

The attacks have changed from espionage to destruction.

Pakistani military officials struggled unsuccessfully on Monday to explain how a small team of insurgents managed to scale the back wall of one of the country's premier naval air stations and destroy two American-provided surveillance planes. Before the fighting was over, the attackers had killed at least 10 Pakistani security officers in a gun bat...

US President Barack Obama's national security advisor Thomas E. Donilon demanded on Sunday that Pakistan let American investigators interview Osama bin Laden's three widows, adding new pressure in a relationship now fraught over how Bin Laden could have been hiding near Islamabad for years before he was killed by commandos last week.Both Mr. Donilo...

The Obama administration on Tuesday gave Congress a harshly critical assessment of Pakistan's efforts to defeat Al Qaida and other militants, saying that after years of work with the Pakistani military "there remains no clear path toward defeating the insurgency" that thrives in the country. That conclusion, buried in a 38-page report on the state ...

Even before Saudi Arabia sent troops into Bahrain on Monday to quell an uprising it fears might spill across its own borders, American officials were increasingly concerned that the kingdom's stability could ultimately be threatened by regional unrest, succession politics and its resistance to reform. So far, oil-rich Saudi Arabia has successfully ...

Japan's nuclear crisis verged toward catastrophe on Tuesday after an explosion damaged the vessel containing the nuclear core at one reactor and a fire at another spewed large amounts of radioactive material into the air, according to statements from Japanese government and industry officials.In a brief morning address to the nation Tokyo time, Pri...

Even before Saudi Arabia sent troops into Bahrain on Monday to quell an uprising it fears might spill across its own borders, American officials were increasingly concerned that the kingdom's stability could ultimately be threatened by regional unrest, succession politics and its resistance to reform. So far, oil-rich Saudi Arabia has successfully ...

The Arab League asked the United Nations Security Council on Saturday to impose a no-flight zone over Libya in hopes of halting Col. Moammar el-Gaddafi's attacks on his own people, providing the rebels a tincture of hope even as they were driven back from a long stretch of road it had captured in the three-week war. The extraordinary move by the 22...

Officials did not disclose the number of Obama's emails that were harvested by hackers, nor the sensitivity of their content.

A new study concludes that beyond the Sands attack, Iran has greatly increased the frequency and skill of its cyber-attacks.

A recently disclosed NSA document describes the increasing use of cyber-weapons by the US and Iran against each other.

The long history of quiet cooperation between Washington and America's top tech companies was founded on the assumption of mutual interest.

In response to questions about the matter, a senior Department of Homeland Security official confirmed that the attack had occurred.

Adm. Michael S. Rogers said the damage done overall by a year of revelations does not lead him to the conclusion that "the sky is falling."

Department of Homeland Security said it needs to expand its cyber-security force by as many as 600 hacking specialists to keep pace with the rising number of threats.

The attacks have changed from espionage to destruction.

Pakistani military officials struggled unsuccessfully on Monday to explain how a small team of insurgents managed to scale the back wall of one of the country's premier naval air stations and destroy two American-provided surveillance planes. Before the fighting was over, the attackers had killed at least 10 Pakistani security officers in a gun bat...

US President Barack Obama's national security advisor Thomas E. Donilon demanded on Sunday that Pakistan let American investigators interview Osama bin Laden's three widows, adding new pressure in a relationship now fraught over how Bin Laden could have been hiding near Islamabad for years before he was killed by commandos last week.Both Mr. Donilo...

The Obama administration on Tuesday gave Congress a harshly critical assessment of Pakistan's efforts to defeat Al Qaida and other militants, saying that after years of work with the Pakistani military "there remains no clear path toward defeating the insurgency" that thrives in the country. That conclusion, buried in a 38-page report on the state ...

Even before Saudi Arabia sent troops into Bahrain on Monday to quell an uprising it fears might spill across its own borders, American officials were increasingly concerned that the kingdom's stability could ultimately be threatened by regional unrest, succession politics and its resistance to reform. So far, oil-rich Saudi Arabia has successfully ...

Japan's nuclear crisis verged toward catastrophe on Tuesday after an explosion damaged the vessel containing the nuclear core at one reactor and a fire at another spewed large amounts of radioactive material into the air, according to statements from Japanese government and industry officials.In a brief morning address to the nation Tokyo time, Pri...

Even before Saudi Arabia sent troops into Bahrain on Monday to quell an uprising it fears might spill across its own borders, American officials were increasingly concerned that the kingdom's stability could ultimately be threatened by regional unrest, succession politics and its resistance to reform. So far, oil-rich Saudi Arabia has successfully ...

The Arab League asked the United Nations Security Council on Saturday to impose a no-flight zone over Libya in hopes of halting Col. Moammar el-Gaddafi's attacks on his own people, providing the rebels a tincture of hope even as they were driven back from a long stretch of road it had captured in the three-week war. The extraordinary move by the 22...