Cellphones can steal data from ‘air-gapped computers’

A research team discovered how to turn an ordinary air-gapped computer into a cellular transmitting antenna using software that modifies the CPU firmware. GSMem malicious software uses the electromagnetic waves from phones to receive and exfiltrate small bits of data, such as security keys and passwords.

Story added 28. July 2015, content source with full text you can find at link above.