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How do scammers overtake a youtube account with 2fa enabled (piped.kavin.rocks)

submitted 11 months ago* (last edited 11 months ago) by [email protected] to c/[email protected]

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Saw a video of a youtuber that got his account overtaken which has 2fa enabled (not sure which method but I'm thinking sms). He says he didn't get phished, downloaded anything and his session cookies weren't stolen and I believe him. The only clue is that he received a sms otp from google but was invalid when he inputted it which let's me to believe he relied on SMS for 2fa in the first place. My theory is he reused passwords and his number was overtaken but I'm not sure if that's the case since he did receive the google otp so that leaves out the common phone rep social engineering methods of porting out and fowarding. What else could it be? My paranoia is kinda acting up

Tldr: A YouTuber's account was hacked despite having 2FA. While unsure of the exact method, potential factors include relying on SMS OTP and the possibility of password reuse. No session cookies were stolen, nothing downloaded and no links clicked

Edit for timestamp: its kinda difficult since he jumps around a lot but he begins to talk about it around the 2min 30sec mark and stops at around the 6min mark

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[–] [email protected] 7 points 11 months ago (2 children)

Off the top of my head:

persistent auth cookie hijack
MITM SMS attack

[–] [email protected] 4 points 11 months ago (1 children)

With SMS I don’t think it’s MITM. If you can reprogram a sim chip (or build a new one) the phone network just sends you a person’s messages.

I think. Haven’t done it myself.

[–] damium 2 points 11 months ago

There is also SMS passive reading using LEO intercept. Hacked police email accounts are used to gain access to carrier systems where they use "imminent threat" no warrant lookups to pull the SMS in real time.

SMS is a terrible form of 2FA, better than none but not by much.