Hackers could extract information from software that has been banned from connecting to the internet, by adjusting the speed of a computer’s processor up or down and encoding data in the fluctuations. Details of these fluctuations could then be accessed remotely, circumventing the ban.
Some computers handle such sensitive tasks that they are separated from the internet entirely to avoid hacks – a precaution known as air-gapping. But an attacker who manages to install malware on a machine like…