The US Internal Revenue Service (IRS) said Monday a hacking attack into one of its computer databases revealed in May was much more extensive than previously thought, with nearly three times as many taxpayers hit by data theft.
The US House of Representatives on Wednesday is expected to pass long-awaited legislation designed to thwart cyberattacks by encouraging private companies to share information about the attackers' methods with the government.
South Korea`s government accused North Korea Tuesday of carrying out cyber-attacks last December on its nuclear power plant operator, describing them as a provocation which threatened people`s lives and safety.
South Korea`s nuclear power operator said on Sunday that cyberattacks on non-critical operations at the company`s headquarters are continuing but the country`s nuclear power plants are operating safely and are secure from attack.
China has said it opposes all forms of cyberattacks, but it stopped short of directly condemning the hacking of Sony Pictures, or of responding to US calls for action against North Korea, blamed by Washington for the assault.
Computer systems at South Korea’s nuclear plant operator have been hacked, but only non-critical data has been lost and there is no risk to the safety of nuclear installations including the country`s 23 atomic reactors, the company and the government said on Monday.
A prolific computer hacker who infiltrated the servers of major corporations later switched sides and helped the US government disrupt hundreds of cyberattacks on Congress, NASA and other sensitive targets, according to federal prosecutors.