Security researchers have uncovered a vulnerability in the Fullscreen API of Apple Safari browser, which is being exploited by hackers for convincing password theft attacks.
Hackers use a browser-in-the-middle technique to trick users into interacting with a remote browser controlled by attackers, leading to the theft of login credentials and authentication cookies.
The specific limitation in Safari browsers makes Fullscreen BitM attacks particularly convincing, as the browser doesn't provide proper alerts when a window enters fullscreen mode.
Despite being informed about this vulnerability, Apple has decided not to address it further, as they believe the swipe animation in Safari is a sufficient signal for users.