SMS is based on SS7 signaling, which is broken pretty bad: https://www.techtarget.com/whatis/definition/SS7-attack
There's also SIM-swap attacks that rely on social engineering your carrier.
Re:Ask HN: Bank with Yubikey support?
by aaaaaaaaata on Thursday April 28, 2022 @10:49AM
(#31193145)
Yes, to everything except "suddenly".
I know itβs not encrypted but has it suddenly become easy to intercept?