On January 2025, ODOS was exploited in a signature attack on Base, resulting in approximately $50K in losses. That makes the ODOS exploit the 269th largest DeFi incident out of 690 documented in our archive.
Attack Mechanics: How the ODOS Signature Attack Played Out
Exploit Class Applied to ODOS
The ODOS incident on January 23, 2025 is classified as a Signature Attack. Replayed, malleable, or forged signatures bypass access controls. In the full archive, ODOS is 1 of 5 documented signature attack incidents.
ODOS in Context
At $50K, the ODOS exploit is a minor (<$1M) event compared to the largest same-class incident in our archive — AzukiDAO (2023) at $69K.
Prior Signature Attack Before ODOS
The nearest signature attack incident before ODOS was TCH, 252 days earlier on May 16, 2024 ($18K lost). The same exploit class surfaced again within the signature attack attack surface.
ODOS Vulnerability Signature
The primary source categorises the ODOS exploit specifically as “invalid-signature-verification”. This narrower label is entity-specific: it reflects how the ODOS contract failed, rather than the broad signature attack pattern alone.
Target Chain: Base
The vulnerable ODOS contract was deployed on Base — one of 3 documented incidents on Base. This determines the block cadence, mempool, and forensic tooling available to investigators.
Impact & Recovery for ODOS
ODOS Loss Figure
The ODOS exploit caused $50,000 in losses — a minor (<$1M) incident and the 39th largest of 96 documented in 2025.
Where ODOS Sits Among Signature Attack Attacks
Ranked by loss size, ODOS is the 2nd largest of 5 signature attack incidents documented. That puts the ODOS loss above the class average of $36.5K.
Timeline Since the ODOS Incident
The ODOS exploit occurred 1.2 years ago (446 days). The contract, its fork-block, and the attack transaction remain on-chain and forensically reproducible.
Primary Reference for ODOS
Public post-mortem / on-chain analysis for the ODOS incident: view source.
FAQ
How much did ODOS lose?
The ODOS exploit in January 2025 resulted in $50,000 in losses — the 39th largest of 96 DeFi incidents that year.
When did the ODOS hack happen?
The ODOS exploit was recorded on January 23, 2025 — 446 days ago.
What type of exploit hit ODOS?
The ODOS incident is classified as a Signature Attack. Replayed, malleable, or forged signatures bypass access controls.
Which blockchain was ODOS deployed on?
The ODOS contract was deployed on Base, one of 3 documented incidents on that chain.
How does ODOS compare to the largest Signature Attack attack?
The largest signature attack incident in our archive is AzukiDAO (2023) at $69K. The ODOS loss is $50K.
Discuss the privacy and security advantages of using zk-SNARKs in payment channels.
Zk-SNARKs enable transactions that are both anonymous and secure, protecting the amount and parties involved.
How does the proposed cross-chain protocol provide offline tolerance?
The protocol is encoded into a P2SH script, allowing it to function even when participants are offline.