WASHINGTON - A massive breach of U.S. federal computer networks disclosed this week is the latest in a flood of attacks by suspected Chinese hackers aimed at grabbing personal data, industrial secrets and weapons plans from government and private computers.
The Obama administration on Thursday disclosed the breach of computer systems at the Office of Personnel Management and said the records of up to 4 million current and former federal employees may have been compromised.
U.S. officials have said on condition of anonymity they believe the hackers are based in China , but Washington has not publicly blamed Beijing at a time when tensions are high over Chinese territorial claims in the South China Sea .
China has denied involvement.
It was the second computer break-in in less than a year at the OPM, the federal government's personnel office . The first breach has been linked to earlier thefts of personal data from millions of records at Anthem Inc, the second largest U.S. health insurer, an attack also blamed on Chinese hackers, and Premera Blue Cross , a healthcare services provider.
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"It's a different form of Cold War at this point," said Rob Eggebrecht , co-founder and chief executive of Denver -based InteliSecure, a private cybersecurity firm.
Eggebrecht said his firm had seen a spike in attacks on private company networks by Chinese actors over the past three months. The latest was a previously undisclosed breach at a U.S. pharmaceutical group, which cost the firm hundreds of millions of dollars in sensitive research and development work.
Eggebrecht declined to identify the firm, which he said only learned of the major breach within the last 72 hours.
"We've seen a huge uptick in opportunistic exfiltration of high-value data," he said, adding that the attack on the pharma company involved malicious software installed together with the Chinese-language search engine Baidu.
"DIZZYING RATE"
Admiral James Winnefeld , vice chairman of the Joint Chiefs of Staff, told a cyber conference at West Point military academy last month that U.S. adversaries like China and Russia were rapidly increasing their assaults on military networks.
"We're hemorrhaging information at a dizzying rate, evidenced by the uncanny similarity of some of our potential adversaries' new platforms to those we've been developing," said Winnefeld, one of a growing number of U.S. officials who argue for striking back at attackers to create more of a deterrent.
China has in recent years introduced two new stealth fighters that analysts say bear a striking resemblance to the F-22 and F-35 built by Lockheed Martin Corp. Lockheed redoubled security efforts focused on suppliers after a "significant and tenacious" attack on its computer networks in 2011 that was enabled by lax security at a supplier.
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U.S. senators have added $200 million in funding to their proposed fiscal 2016 budget to fund a detailed study of the cyber vulnerabilities of major weapons systems.
The move came after the Pentagon 's chief weapons tester told Congress that nearly every major weapons program tested in 2014 showed "significant vulnerabilities" to cyber attack, including misconfigured and unpatched software.
U.S. government officials and cyber analysts say Chinese hackers are using high-tech tactics to build massive databases that could be used for traditional espionage goals, such as recruiting spies, or gaining access to secure data on other networks.
The latest incident gives hackers access to a treasure trove of personal information, including birthdates, Social Security numbers, previous addresses, and security clearances.
All that data could help hackers identify information about specific targets, including potential passwords for websites that may be portals to information about weapons systems or other research data.
"They can dig down into that data and learn more about the individuals, what their hobbies are, what their vices are, what skeletons they have in their closet," said Babak Pasdar , president and chief executive of Bat Blue Network , a cybersecurity firm.
He said he was involved in a recent case in which hackers gained access to private data of a website administrator by finding passwords on a public website linked to the person's hobby.
"This empowers the malevolent cyber actor to target a huge number of people with phishing and other schemes to reel in information," said one U.S. defense official. "The more targets you have, the more likely you are to score."
