GUILFORD, U.K. — WiFi networks worldwide could contain a security flaw that lets hackers disrupt internet traffic, according to researchers.
A hacker in range of a WiFi network would be able load viruses onto the network, read and gather communications like passwords, credit card numbers and photos sent, the Telegraph reported.
Experts call it a "Krack" attack and say it's a "fundamental flaw" in wireless security techniques, with Apple, Android and Windows software all vulnerable to some extent.
The Krack attack takes advantage of the "handshake" between device and router to insert a "key" that can decrypt communications to allow things like passwords and credit card data to be stolen, according to the Telegraph.
Researchers suggest only connecting to secured WiFi networks and avoiding unsecured networks like those hotels, coffee shops and public spaces.
Most banking and online shopping websites use https, an encryption technique that protects against Krack attacks.
Security analysts also suggest updating your router, although updates for Krack attacks may not be available yet.