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The Office of Personnel Management (OPM) amended its initial claim in July that 1.1 million fingerprint records were stolen, now admitting hackers retrieved more than five times that amount.
In a statement released Wednesday, OPM Press Secretary Sam Schumach said that during the OPM and Department of Defense's ongoing investigation, it found approximately 5.6 million individuals' fingerprint records were stolen. The agency said, however, that this increase does not affect the total number of individuals involved in the data breach, which still stands at 21.5 million.
The previously unaccounted fingerprint records were found in an archive and had not been analyzed initially, Schumach said.
The OPM has largely downplayed the severity of risk involved with stolen fingerprints, saying "Federal experts believe that, as of now, the ability to misuse fingerprint data is limited."
However, many across the information security industry don't necessarily agree. Fingerprint data -- unlike passwords and credit card numbers -- cannot be changed, making the theft a much more serious security and privacy threat.
"The stolen information now includes data that could be used to defeat some simple biometric systems," Jean Taggart, senior security researcher at Malwarebytes in San Jose, Calif., said in an email statement. "This has been confirmed as possible and has been demonstrated."
"This issue illustrates one of the core problems with biometric identification. If an attacker has your fingerprints, what do you do? You can't really change your fingers," Taggart said.
"Biometrics, like fingerprints, are the passwords of the future, and the staggering 5.6 million people of interest who have had their future passwords stolen from OPM are exposed to potential threats no one really understands," said Jonathan Sander, vice president of product strategy at Lieberman Software Corp., based in Los Angeles. "In theory, these fingerprints stolen from OPM shouldn't be able to do much harm right now. But who knows what shortcuts may exist in future applications that will allow a mere shadow of a print, like the data OPM had, to become the way some future breach is pulled off."
Igor Baikalov, chief scientist at Los Angeles-based Securonix Inc., said scanning fingerprints for biometric authentication isn't always 100% accurate. "Contrary to a popular belief, fingerprints are not unique, and out of 5.6 million fingerprints compromised, there can be quite a few people who have fingerprints similar enough to be accepted by the biometric authentication system," he said.
"One of the key challenges with biometric authentication is that it's immutable," said Tim Erlin, director of IT security and risk strategy at Tripwire Inc., based in Portland, Ore. "You can't change your fingerprints, retinas or voice prints. When biometric credentials are compromised, it's very hard to recover … While cybercriminals may not be positioned to leverage stolen biometrics now, that will change, as these types of authentication are more widespread."
Expert Graham Cluley noted that fingerprints should not be considered passwords. "You leave your fingerprints lying around all over the place every day -- a fact that hackers attempting to breach biometric authentication systems have taken advantage of in the past," Cluley said.
Tammy Moskites, CIO and CISO of Salt Lake City-based Venafi Inc., said, "Having biometrics stolen is terrifying for two major reasons. One, there could be a brand new type of stolen goods being trafficked on the black market: biometrics. Two, those whose biometrics were stolen will have to deal with losing their identity for the rest of their lives. It is still unclear what the hackers plan to do with the biometric data they have stolen, but already impersonators are on the black market selling fake OPM-breached fingerprints."
"This could open up a Pandora's Box for those impacted by the breach," Moskites continued. "Your fingerprints, along with other biometric data, are exposed and easy for the taking … Keeping your biometric data secure is a serious security concern that hasn't been addressed much -- at least not to date."
The OPM did admit that the ability of hackers to use fingerprint data is "likely to change over time as technology evolves."
According to the OPM statement, an interagency group will "review the potential ways adversaries could misuse fingerprint data now and in the future. This group will also seek to develop potential ways to prevent such misuse. If, in the future, new means are developed to misuse the fingerprint data, the government will provide additional information to individuals whose fingerprints may have been stolen in this breach."
The agency will also continue to review the breached data to "enhance its quality and completeness," as well as "monitor for any misuse."
A first OPM breach reported in June affected 4 million victims, all of whom have been notified. A second breach reported in July found 21.5 million personal records, including Social Security numbers and health records were stolen, as well as the original 1.1 approximated fingerprint records. At that same time, Chinese hackers emerged as the main suspect involved in the breach, though China denies any involvement and the U.S. has yet to make a formal accusation.
In the most recent OPM statement, Schumach reiterated that the OPM is offering free identity protection services to those affected. An interagency team is preparing to mail notification letters to the victims.
In other news
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