Key Findings A 16TB unsecured MongoDB database exposed about 4.3 billion professional records, mainly LinkedIn-style data The database was discovered by researchers Bob Diachenko and nexos.ai on November 23, 2025 and secured two days later The database contained 9 collections with at least 3 exposing nearly 2 billion personal records including names, emails, phone numbers, LinkedIn links, job roles, employers, work history, education, locations, skills, languages, and social
