Storybird

In August 2015, the storytelling service StoryBird suffered a data breach that exposed 4 million records.

The breach exposed 1 million unique email addresses and also data including names, usernames and passwords stored as PBKDF2 hashes.

The data was provided to HIBP by dehashed.com.

Source: https://www.zdnet.com/article/hacker-puts-up-for-sale-third-round-of-hacked-databases-on-the-dark-web/

"id": "STO194341222",
"linkid": "storybird-inc.",
"type": "Breach",
"date": "08/2015",
"severity": "60",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"