People search OpenAI data breach timeline because the brand sits on billions of accounts, credentials, and cloud workloads. BreachHistory indexes 4 OpenAI-linked incidents. This page maps every attested event through 2026 with internal links to canonical records.
Why OpenAI breach history matters
OpenAI operates in AI (United States). Across indexed rows, recurring themes include credential theft and social engineering, cloud and database misconfiguration, third-party and supply-chain exposure. Understanding the chronological pattern helps security teams, customers, and regulators separate confirmed disclosures from forum marketing.
Full timeline through 2026
2026 — TanStack npm supply-chain attack; two employee devices, repo credentials exposed (May)
Cataloged incident. On 14 May 2026, OpenAI publicly confirmed that two employees’ devices were compromised during the Mini Shai-Hulud / TeamPCP TanStack npm supply-chain campaign that poisoned hundreds of trusted npm and PyPI packages earlier that week. OpenAI’s incident write-up described malware-consistent credential-focused exfiltration against a limited subset of internal source-code repositories those employees could reach, followed by isolation, session revocation, credential rotation, and restricted deployment workflows while a Exposed categories include Limited internal repository credentials; exposed code-signing certificates (rotation underway); no attested end-user ChatGPT content breach per OpenAI. No attested victim count is published for this row yet. See the openai-tanstack-supply-chain 2026 record and canonical BreachHistory entry.
2025 — Mixpanel third-party breach (API users)
Cataloged incident. Mixpanel, OpenAI's third-party analytics provider, suffered a smishing (SMS phishing) attack on November 8-9, 2025. An attacker gained unauthorized access and exported a dataset containing customer information. The breach affected OpenAI API platform users and limited ChatGPT users. Exposed data included names, email addresses, approximate locations, OS/browser info, and organization IDs. No chat content, API keys, passwords, or payment data was compromised. OpenAI terminated Mixpanel and elevated vendor security r Exposed categories include Names, email addresses, approximate locations, OS/browser info, organization IDs. No attested victim count is published for this row yet. See the openai2025 and canonical BreachHistory entry.
2023 — internal messaging breach, AI design stolen
Cataloged incident. Hacker accessed internal messaging systems; stole details about AI technology design. Employee forum discussions compromised. No customer/partner data; no model access. Not publicly disclosed at time; FBI not notified. Exposed categories include Internal AI design discussions; technology details. No attested victim count is published for this row yet. See the openai2023 and canonical BreachHistory entry.
2023 — full timeline
Cataloged incident. OpenAI (ChatGPT) has experienced security and data exposure incidents. Full timeline through 2023. Exposed categories include Details not publicly disclosed. No attested victim count is published for this row yet. See the chat and canonical BreachHistory entry.
Patterns and analysis
- Credential theft and social engineering — appears across multiple OpenAI catalog entries; prioritize controls that address this class of failure.
- Cloud and database misconfiguration — appears across multiple OpenAI catalog entries; prioritize controls that address this class of failure.
- Third-party and supply-chain exposure — appears across multiple OpenAI catalog entries; prioritize controls that address this class of failure.
- Record-count hygiene — BreachHistory indexes actor-cited figures separately from company-confirmed totals; read each row's technicalWriteup before treating counts as fact.
- 2026 monitoring — New disclosures roll into this timeline as they are verified or labeled unverified per catalog policy.
What to do if you may be affected
- Step 1: Enable phishing-resistant MFA on every account tied to this brand.
- Step 2: Use unique passwords and a password manager—breach rows often involve credential reuse.
- Step 3: Monitor official company breach notices and regulator filings, not dark-web downloads.
- Step 4: Bookmark the OpenAI company page for new 2026+ disclosures.
Canonical BreachHistory hub
Explore every indexed row: breachhistory.com/openai · Latest: openai-tanstack-supply-chain2026.
Sources: BreachHistory catalog (4 rows for OpenAI), company and regulator disclosures cited in individual breach records.