People search Operation Endgame data breach timeline because the brand sits on billions of accounts, credentials, and cloud workloads. BreachHistory indexes 2 Operation Endgame-linked incidents (1 company-confirmed), with headline counts up to 15.4M+ in catalog rows. This page maps every attested event through 2026 with internal links to canonical records.
Why Operation Endgame breach history matters
Operation Endgame operates in Government (International). Across indexed rows, recurring themes include credential theft and social engineering, zero-day exploitation and malware. Understanding the chronological pattern helps security teams, customers, and regulators separate confirmed disclosures from forum marketing.
Full timeline through 2026
2026 — law-enforcement malware dataset; 4.2M emails to HIBP (Jun)
Verified breach. Law-enforcement notification dataset — June 2026. Have I Been Pwned added Operation Endgame 4.0 after international agencies disrupted criminal malware infrastructure used in ransomware kill chains, providing 4.2 million victim email addresses for public breach notification. This entry represents recovered stealer/malware victim data rather than a compromise of one named corporate service. Users should rotate passwords for any account tied to notified emails and enable MFA. Exposed categories include Email addresses recovered from malware/criminal infrastructure during Operation Endgame 4.0 law-enforcement action—not a single consumer website breach. BreachHistory cites approximately 4.2M+ affected records in this row. See the operation-endgame-4-2026-hibp and canonical BreachHistory entry.
2025 — law-enforcement malware disruption dataset; 15.4M victim emails to HIBP
Cataloged incident. Have I Been Pwned added Operation Endgame 2.0 as a malware breach after law-enforcement agencies disrupted criminal infrastructure used in ransomware kill chains in May 2025. HIBP stated that law enforcement provided 15.3M victim email addresses for notification and a further 43.8M victim passwords for the Pwned Passwords service. This row is a law-enforcement recovery/notification dataset rather than a single breached consumer service. Exposed categories include Email addresses and passwords recovered from criminal infrastructure. BreachHistory cites approximately 15.4M+ affected records in this row. See the operation-endgame-2-2025-hibp and canonical BreachHistory entry.
Patterns and analysis
- Credential theft and social engineering — appears across multiple Operation Endgame catalog entries; prioritize controls that address this class of failure.
- Zero-day exploitation and malware — appears across multiple Operation Endgame 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 Operation Endgame company page for new 2026+ disclosures.
Canonical BreachHistory hub
Explore every indexed row: breachhistory.com/operation-endgame · Latest: operation-endgame-4-2026-hibp.
Sources: BreachHistory catalog (2 rows for Operation Endgame), company and regulator disclosures cited in individual breach records.