Signalling System No. 7, or SS7 - the technology underlying all mobile phones was designed in the 1980’s and doesn’t use anything authentication. Remember that next time you get an SMS authentication code. 😬

#security #privacy

https://arstechnica.com/information-technology/2016/04/how-hackers-eavesdropped-on-a-us-congressman-using-only-his-phone-number/