Truecaller

Personal data of 47.5 million Indians including their phone number, service provider, name, gender, city, email, and Facebook ID, among other things, was available on the dark web for $1,000 (₹75,000).

It was claimed to be sourced from the caller ID app Truecaller.

Truecaller denied any breach of its database.

Source: https://www.medianama.com/2020/05/223-truecaller-denies-database-breach/

"id": "TRU2157291222",
"linkid": "truecaller",
"type": "Data Leak",
"date": "05/2020",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"