In approximately December 2019, Avvo suffered a data breach incident that was published to an online hacking forum and was used in an extortion scam.
The data contained 4.1M unique email addresses alongside SHA-1 hashes, most likely representing user passwords.
Source: https://haveibeenpwned.com/PwnedWebsites#Avvo
"id": "AVV224324123",
"linkid": "avvo",
"type": "Data Leak",
"date": "12/2019",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"