NumBuster MSK 2023

A data event involving the NumBuster caller identification service surfaced in 2023. The incident involves a dataset obtained via parsing or scraping of the service database. The leaked records primarily target users in Moscow and include personal identifiers such as mobile phone numbers, full names, and email addresses. Additional fields like physical addresses, company affiliations, and dates of birth are present but inconsistent across the dataset. Experts have noted significant overlaps with existing Russian mobile databases, raising questions about the unique nature of this specific collection while confirming its utility for targeted social engineering.