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Your wi-fi may be vulnerable to cyberattacks

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Thousands of wi-fi connections in homes and businesses around the world are vulnerable to cyberattacks, researchers from the Belgian university KU Leuven warned on Monday.

According to their findings outlined in a paper, the issue revolves around a system of random number generation known as "nonce," which can be reused by a hacker to enter a network and spy on the data being sent in it.

"All protected wi-fi networks use the four-way handshake to generate a fresh session key and so far this 14-year-old handshake has remained free from attacks," researcher Mathy Vanhoef said. "Every wi-fi device is vulnerable to some variants of our attacks. Our attack is exceptionally devastating against Android 6.0: it forces the client into using a predictable all-zero encryption key."

The U.S. Emergency Readiness Team (Cert) has issued a warning on the flaw.

"US-Cert has become aware of several key management vulnerabilities in the four-way handshake of wi-fi protected access II (WPA2) security protocol."
U.S. Emergency Readiness Team

The organization, which operates within the Department of Homeland Security, confirmed that "most or all correct implementations of the standard will be affected."

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