As per the company, an unauthorized third party gained access to the last four digits of the credit/debit card of several people. While your payment info isn’t in danger, that third party may have used those four digits to gain access to your Verizon account and process a SIM card change. If a SIM swap did occur, Verizon should’ve already reversed it.
Verizon said that it has monitored the activity of the affected users and found no evidence that the malicious activity is still ongoing, or that the attackers gained access to personal information such as SSNs, full credit card numbers, tax IDs, or other info. The carrier also reset a number of PINs as a precautionary measure.
Verizon’s notification might’ve come late for some people. As per a Verizon subscriber speaking to Bleeping Computer, they were victim of a SIM swap attack a week before Verizon alerted anyone, with the attackers then attempting to access their cryptocurrency wallet on Coinbase.
As of the time of writing, though, your account shouldn’t be in danger, and if you did suffer from a SIM swap attack, it should’ve already been reversed on Verizon’s end. But recent security breaches have affected everyone from Samsung, DoorDash, Plex, or even LastPass, so you should double down on your online security, even if you haven’t run into any ugly issues.
Source: Bleeping Computer
