Safety

London Man Sentenced to 2.5 Years for SIM-Swap Cryptocurrency Theft

October 11, 2026, 9:48 PM UTC (2 hours ago) · 1 source · Summarized by CryptoBipto

A man from London has been sentenced to two and a half years in prison for stealing cryptocurrency through SIM-swap attacks. SIM-swapping involves tricking a mobile carrier into transferring a victim's phone number to a device controlled by the attacker, enabling access to accounts protected by SMS-based two-factor authentication.

WHY IT MATTERS

If you use a mobile phone number to protect your online accounts — including crypto exchange accounts — you could be vulnerable to a SIM-swap attack. Think of it like someone convincing your phone company to give them a copy of your house key. Once they have your phone number, they can receive the security codes meant for you and break into your accounts. This case is a reminder that using text-message-based security (SMS two-factor authentication) has known weaknesses. Many security experts recommend using app-based authenticators or hardware security keys instead, which are not tied to your phone number and cannot be intercepted through a SIM swap.

SIM-swap attacks have become one of the more common methods used to steal cryptocurrency. In this type of attack, a criminal convinces or bribes a mobile phone carrier employee to transfer a victim's phone number to a new SIM card.

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SOURCES

cryptopotato.com

SIM-Swap AttacksCrypto TheftCybercrime SentencingTwo-Factor AuthenticationAccount Security

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