John Markoff Nyt News Service

The boy, a dark-haired 6-year-old, is playing with a new companion. The two hit it off quickly -- unusual for the 6-year-old, who has autism -- and the boy is imitating his playmate's every move, now nodding his head, now raising his arms."Like Simon Says," says the autistic boy's mother, seated next to him on the floor.Yet soon he begins to withdr...

The problem, as depicted in Peter Steiner's legendary 1993 New Yorker cartoon, is that on the Internet nobody knows you're a dog. And thus the enduring conundrum over who can be trusted in cyberspace.The Internet affords anonymity to its users -- a boon to privacy and freedom of speech. But that very anonymity is also behind the explosion of cyberc...

A Chinese supercomputer has been ranked as the world's second-fastest machine, surpassing European and Japanese systems and underscoring China's aggressive commitment to science and technology.The Dawning Nebulae, based at the National Supercomputing Center in Shenzhen, China, has achieved a sustained computing speed of 1.27 petaflops -- the equiva...

The system that was struck in a December attack controls millions of users' access to almost all of Google's Web services, a person with direct knowledge of an investigation said.

Turning the tables on a China-based computer espionage gang, Canadian and United States computer security researchers have monitored a spying operation for the past eight months, observing while the intruders pilfered classified and restricted documents from the highest levels of the Indian Defence Ministry.

The Obama administration on Tuesday plans to declassify portions of the Comprehensive National Cybersecurity Initiative.

Even before Google threatened to pull out of China in response to an attack on its computer systems, the company was notifying activists whose e-mail accounts might have been compromised by hackers.

The boy, a dark-haired 6-year-old, is playing with a new companion. The two hit it off quickly -- unusual for the 6-year-old, who has autism -- and the boy is imitating his playmate's every move, now nodding his head, now raising his arms."Like Simon Says," says the autistic boy's mother, seated next to him on the floor.Yet soon he begins to withdr...

The problem, as depicted in Peter Steiner's legendary 1993 New Yorker cartoon, is that on the Internet nobody knows you're a dog. And thus the enduring conundrum over who can be trusted in cyberspace.The Internet affords anonymity to its users -- a boon to privacy and freedom of speech. But that very anonymity is also behind the explosion of cyberc...

A Chinese supercomputer has been ranked as the world's second-fastest machine, surpassing European and Japanese systems and underscoring China's aggressive commitment to science and technology.The Dawning Nebulae, based at the National Supercomputing Center in Shenzhen, China, has achieved a sustained computing speed of 1.27 petaflops -- the equiva...

The system that was struck in a December attack controls millions of users' access to almost all of Google's Web services, a person with direct knowledge of an investigation said.

Turning the tables on a China-based computer espionage gang, Canadian and United States computer security researchers have monitored a spying operation for the past eight months, observing while the intruders pilfered classified and restricted documents from the highest levels of the Indian Defence Ministry.

The Obama administration on Tuesday plans to declassify portions of the Comprehensive National Cybersecurity Initiative.

Even before Google threatened to pull out of China in response to an attack on its computer systems, the company was notifying activists whose e-mail accounts might have been compromised by hackers.