Max Cybersecurity Blog

1st February 2026
O2 SIM Swap Scam
Mobile phone scams are on the rise across the UK, and one of the most dangerous is the O2 SIM swap scam. I personally have had an influx of calls from these scammers recently so can tell you first hand how they operate and how to handle them.
Overview
Fraudsters impersonate O2 staff, claim that they have noticed you SIM card is performing poorly after complaints from other customers. They then proceed to asking for details so they can send you a replacement SIM urgently (tomorrow).
In an O2 SIM swap scam, criminals contact victims by phone and pretend to be from O2 customer support. They often claim there is a security issue, suspicious activity, or a problem with your SIM card.
The attacker’s goal is to gather enough information to take control of your mobile number. Once they succeed, they can intercept text messages and reset passwords for email, banking, online accounts and MFA requests.
This type of scam can lead to account takeover, financial loss, and identity theft........
