16TB of corporate intelligence data exposed in one of the largest lead-generation dataset leaks

Data leak.

• Researchers found an unprotected 16TB MongoDB database exposing nearly two billion PII‑filled records
• Data likely scraped from LinkedIn and Apollo.io, tied to a possible lead‑gen company
• Database was secured after disclosure, but exposure duration and malicious access remain unknown

More than 16 terabytes of professional and corporate intelligence data, including personally identifiable information (PII), was sitting in an unprotected database, available to anyone who knew where to look.