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Martin Young5 hours agoVitalik Buterin reveals X account hack was caused by SIM-swap attackThe Ethereum co-founder has regained control of his T-Mobile account, confirming that a SIM-swap attack resulted in the hack of his X account.3088 Total views20 Total sharesListen to article 0:00NewsJoin us on social networksEthereum co-founder Vitalik Buterin has confirmed that the recent hack of his X (Twitter) account was the result of a SIM-swap attack.


Speaking on the decentralized social media network Farcaster on Sept. 12, Buterin said that he has finally recovered his T-Mobile account after the hacker managed to gain control of it via a SIM swap attack.“Yes, it was a SIM swap, meaning that someone socially-engineered T-mobile itself to take over my phone number.”


The Ethereum co-founder added some lessons and learnings from his experience with X.Vitalik Buterin confirms how his X account was accessed by hackers. Source: Warpcast


“A phone number is sufficient to password reset a Twitter account even if not used as 2FA,” he said, adding that users can “completely remove [a] phone from Twitter.”“I had seen the ‘phone numbers are insecure, don"t authenticate with them’ advice before, but did not realize this.”


On Sept. 9, Buterin’s X account was taken over by scammers who posted a fake NFT giveaway prompting users to click a malicious link which resulted in victims collectively losing over $691,000.


On Sept. 10, Ethereum developer Tim Beiko strongly recommended removing phone numbers from X accounts and having 2FA enabled. "Seems like a no-brainer to have this default on, or to default turn it on when an account reaches, say, >10k followers," he said to platform owner Elon Musk.Twitter opsec PSA:

If you have a phone number linked on your account, even with other 2FA, it can be used to reset your PW. Need to specifically disable it + remove phone #.

If your Twitter account pre-dates crypto, strongly recommend double-checking, and adding strong 2FA! pic.twitter.com/uXrvHYhQvJ— timbeiko.eth ☀️ (@TimBeiko) September 9, 2023


Related:How easy is a SIM swap attack? Here’s how to prevent one


A SIM-swap or simjacking attack is a technique used by hackers to gain control of a victim’s mobile phone number. With control of the number, scammers can use two-factor authentication (2FA) to access social media, bank, and crypto accounts.


It is not the first time T-Mobile has been involved in this type of attack vector. In 2020, the telecoms giant was sued for allegedly enabling the theft of $8.7 million worth of crypto in a series of SIM-swap attacks.


T-Mobile was also sued again in February 2021 when a customer lost $450,000 in Bitcoin in another SIM-swap attack.


Article updated to include additional comments from Tim Beiko.


Magazine: How to protect your crypto in a volatile market: Bitcoin OGs and experts weigh in# Twitter# Business# Vitalik Buterin# SIM Card# Scams# HacksAdd reactionAdd reactionRead moreHow to actually spend your Bitcoin, ExplainedChatGPT-coded smart contracts may be flawed, could ‘fail miserably’ when attacked: CertiKCrypto VC: Risk and investment strategies with Shima Capital

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