Kaspersky, whose range of products are reportedly used by around 400 million people globally including some 20 government clients, said it was not responsible for the alleged cyber-espionage.
The Times reported that Russian hackers turned the Kaspersky software into a sort of Google search for sensitive information, and that it is not yet publicly known what other USA secrets they may have discovered.
The Russian government has used popular antivirus software for the search of secret documents around the world.
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"There are no plans to warn against the use of Kaspersky products since the BSI has no evidence for misconduct by the company or weaknesses in its software", BSI said in a statement on Wednesday.
The Washington Post had also reported that the Israeli spies discovered hacking tools that could only originated from the U.S. National Security Agency in Kaspersky's network.
The U.S. government last month ordered Kaspersky software removed from government computers, saying it was concerned the Moscow-based cyber security firm was vulnerable to Kremlin influence. It said it was anxious that the Russian government had possibly compromised the firm.
The NIC reportedly said the FSB could use that access to hack sensitive U.S. government and industrial networks.
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Eugene Kaspersky, a businessman and former Russian Defense Ministry official, founded Kaspersky Lab in 1997. The anti-virus vendor is used by 400 million people globally, including United States government agencies.
Kremlin Press Secretary Dmitry Peskov has categorically denied information that NASA information had been stolen using Kaspersky Lab tools.
Sarah Kitsos of Kaspersky told the Post that, "as a private company, Kaspersky Lab does not have inappropriate ties to any government, including Russian Federation, and the only conclusion seems to be that Kaspersky Lab is caught in the middle of a geopolitical fight".
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