Organizations of all sizes face a growing but largely invisible threat: sensitive data exposures across their supply chain that are openly accessible on the clear web without their awareness. Through real-world disclosures and industry-wide research, we reveal how supply chain leakage has become normalized through misplaced trust in contracted vendors and disclosure processes that fail to enforce third-party accountability. Larger organizations often accept exposure as an implicit risk, while smaller organizations assume vendors follow best practices. Existing OSINT platforms frequently reinforce this gap by prioritizing internal visibility while overlooking externally discoverable data.

This talk reframes OSINT-driven leak discovery as more than evidence collection. We demonstrate how pairing exposure evidence with clear threat theory and actionable remediation guidance transforms vulnerability disclosures into effective risk-reduction outcomes.