A hacker named ShinyHunters leaked the details of millions of users registered on Teespring, a web portal that creates and sells custom-printed apparel.
The Teespring data was made available as a 7zip archive that includes two SQL files. The first file contains a list of more than 8.2 million Teespring users' email addresses and the date the email address was last updated.
The second file includes account details for more than 4.6 million users including a hashed version of the email address, usernames, real names, phone numbers, home addresses, and Facebook and OpenID identifiers users used to log into their accounts.
However, the investigation revealed that the breach happened due to a 3rd party service called Waydev requiring access to some of its data.
Source: https://www.zdnet.com/article/hacker-leaks-data-of-millions-of-teespring-users/
"id": "TEE123141222",
"linkid": "teespring",
"type": "Data Leak",
"date": "06/2021",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"