Mint Mobile, the prepaid mobile carrier backed by Ryan Reynolds, notified customers via email this weekend that their information may have been stolen in a security breach, according to BleepingComputer. That information includes names, phone numbers, email addresses, plan descriptions, and SIM and IMEI numbers — which could be used for SIM swap attacks.

After a Reddit user posted a screenshot of the email and questioned if it was a scam, the Mint account responded to confirm its validity and said a customer support number has been set up to handle questions about the breach. Hackers did not access customers’ credit card information, which Mint says is not stored, nor were passwords compromised, BleepingComputer reports. The company also said it has since resolved the breach and customers do not need to take any action.