Reply to post: Yeahbut who uses SMS for 2FA on a critical account anyway?

Bitcoin backer sues AT&T for $240m over stolen cryptocurrency

Anonymous Coward
Anonymous Coward

Yeahbut who uses SMS for 2FA on a critical account anyway?

PSNs (public switched networks) use the SS7 signalling protocol which was standardized in 1976 (or thereabouts). In 1976, a telephone exchange authenticated another exchange because they were connected by a length of copper.

That hasn't been the case since VoIP services connected to the PSN.

See this El Reg article https://www.theregister.co.uk/2017/05/03/hackers_fire_up_ss7_flaw/

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