Mint Mobile suffered a data breach after an unauthorized person gained access to subscribers’ account information and ported phone numbers to another carrier.
The data breach notification email sent to affected subscribers said that a threat actor ported the phone numbers for a “small” number of Mint Mobile subscribers to another carrier without authorisation.
Source: https://www.databreaches.net/mint-mobile-hit-by-a-data-breach-after-numbers-ported-data-accessed/
"id": "MIN231621123",
"linkid": "mint-mobile-llc",
"type": "Breach",
"date": "07/2021",
"severity": "100",
"impact": "5",
"explanation": "Attack threatening the organization’s existence"