Wireless Application Protocol hackers go beyond stealing your wi-fi password to get online for free.

This latest method, Key Re-installation Attack, or Krack, tricks WPA 2 into do something it was programmed not to: Reuse your key. To keep things simple, each time a mobile device connects to Wi-Fi, a key is generated, which is called a handshake. During the authentication process, the system is tricked into giving hackers access to your key. To use WPA2, each key must be unique each time. Krack defies this logic. 

Krack attackers can sneak into the connection, reuse your key and read encrypted information. This can be abused to steal sensitive information such as debit card numbers, passwords, emails, photos and more. Depending on the network configuration, it could also inject and manipulate data, according to experts.

WPA is a late-1990's tech that is mostly extinct in Europe and the U.S. It was replaced by WPA2 in August 2001, a streamlined version designed to keep up with newer, high-speed, 4G systems.

WPA2 was also designed to be more encrypted than its predecessor.

Meanwhile, internet vendors are scrambling to distribute a patch to protect mobile users against Krack attacks

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