The cyberattack that has targeted Marks & Spencer's is the latest in a growing wave of cases involving something called sim-swap fraud. While the full technical details remain under investigation, a report in the Times suggests that cyber attackers used this method to access M&S internal systems, possibly by taking control of an employee's mobile number and convincing IT staff to reset critical login credentials. So what is sim-swap fraud and how can you protect yourself against it? https://www.rte.ie/brainstorm/2025/0515/1512968-marks-and-spencer-sim-swap-fraud-hackers-cyberattacks/