Mobile network operator USCellular suffered a data breach after hackers gained access to its CRM and viewed customers’ accounts. Customers’ social security numbers and credit card information were not accessible as they are masked in the CRM. After accessing your account, a wireless number on your account was ported to another carrier by the attackers. The company also reset impacted customers’ and authorized contact’s PIN and security questions/answers, which can be set up again by contacting the company. The data breach notification was filed with the Vermont attorney general’s office.
Source: https://www.bleepingcomputer.com/news/security/uscellular-hit-by-a-data-breach-after-hackers-access-crm-software/