OneClass

More than one million North American students have had their data exposed after a popular online learning platform OneClass, left it in a publicly accessible cloud database.

The trove contained over 27GB of data, amounting to 8.9 million records, including many students’ full names, email addresses, schools/universities, phone numbers, account details, and school enrollment details.

Source: https://www.infosecurity-magazine.com/news/online-learning-exposes-data-one/

"id": "ONE19396123",
"linkid": "oneclass",
"type": "Data Leak",
"date": "06/2020",
"severity": "85",
"impact": "3",
"explanation": "Attack with significant impact with internal employee data leaks"