SIM Swap
AT&T rolls out “Wireless Lock” feature to block SIM swap attacks
AT&T has launched a new security feature called “Wireless Lock” that protects customers from SIM swapping attacks by preventing changes to their account information and the porting of phone numbers while the feature is enabled. This new feature has been available for some customers for almost a year and has now been rolled out to […]
SK Telecom says malware breach lasted 3 years, impacted 27 million numbers
SK Telecom says that a recently disclosed cybersecurity incident in April, first occurred all the way back in 2022, ultimately exposing the USIM data of 27 million subscribers. SK Telecom is the largest mobile network operator in South Korea, holding roughly half of the national market. On April 19, 2025, the company detected malware on its networks and […]
SK Telecom cyberattack: Free SIM replacements for 25 million customers
South Korean mobile provider SK Telecom has announced free SIM card replacements to its 25 million mobile customers following a recent USIM data breach, but only 6 million cards are available through May. SK Telecom is the country’s largest mobile network operator, serving roughly half of the domestic mobile phone market. On April 19, the […]
SK Telecom warns customer USIM data exposed in malware attack
South Korea’s largest mobile operator, SK Telecom, is warning that a malware infection allowed threat actors to access sensitive USIM-related information for customers. SK Telecom is the largest mobile network operator in South Korea, holding approximately 48.4% of the mobile phone service market in the country, corresponding to 34 million subscribers. The company says they detected malware […]
Hacker pleads guilty to SIM swap attack on US SEC X account
Today, an Alabama man pleaded guilty to hijacking the U.S. Securities and Exchange Commission (SEC) account on X in a January 2024 SIM swapping attack. This comes after the defendant, 25-year-old Eric Council Jr., first pleaded not guilty to hacking the account and enabling his co-conspirators to make a fake announcement that Bitcoin ETFs were approved. “Today […]
US charges five linked to Scattered Spider cybercrime gang
The U.S. Justice Department has charged five suspects believed to be part of the financially motivated Scattered Spider cybercrime gang with conspiracy to commit wire fraud. Between September 2021 and April 2023, they were able to steal millions from cryptocurrency wallets using victims’ credentials stolen in SMS phishing attacks targeting dozens of targets, including both individuals […]