A citation-first archive.
Blockchain Breaches is an open record of cryptocurrency security incidents. Every entry points back to its sources.
This archive collects the security incidents that have shaped — and cost — the cryptocurrency ecosystem since its earliest days. For every entry we record the date, the loss in U.S. dollars, the chains involved, the attack vector, and links to the primary post-mortems and on-chain evidence.
What counts as a breach
- Smart contract exploits and protocol-level vulnerabilities.
- Bridge hacks and cross-chain message-validation failures.
- Oracle manipulations and flash-loan-enabled attacks.
- Private-key theft and signer compromise.
- Rug pulls, exit scams and governance attacks.
- Centralized exchange failures with documented loss of customer funds.
Sourcing
Loss amounts use the USD value at or near the time of the incident. Where reported figures diverge, we cite the most conservative publicly verifiable estimate. Every entry links to at least one primary post-mortem and, where available, the transaction hashes that prove the loss on-chain.
Corrections
Spot an inaccuracy? Open an issue on the project repository — every claim should be backed by a public source. The archive improves with the help of researchers who notice what we missed.