PolyNetwork

2020-08-18

Poly Network launched by founding members Neo, Ontology, and Switcheo as a tokenless heterogeneous cross-chain interoperability protocol.

2021-08-10

Attacker exploits access control vulnerability in EthCrossChainManager and EthCrossChainData smart contracts, draining approximately $610 million across Ethereum, Binance Smart Chain, and Polygon — the largest DeFi hack at the time.

2021-08-11

Attacker begins returning stolen funds and claims via embedded on-chain messages that the theft was intended to expose the vulnerability. Poly Network refers to the attacker as 'Mr. White Hat.'

2021-08-13

Approximately $340 million in funds returned; remaining assets moved to a multi-signature address requiring Poly Network cooperation for transfer.

2021-08-25

Final tranche of stolen funds returned. Poly Network confirms all assets recovered. The hacker declines the $500,000 bug bounty.

2021-09-01

Poly Network launches a bug bounty program on Immunefi offering up to $100,000 for critical vulnerabilities.

2023-07-02

Second major exploit: attackers allegedly compromise 3 of 4 Relay Chain keeper private keys via Trojan virus or insider action, minting billions in notional-value tokens across 11 chains. Actual realized losses estimated at $10–20 million. Services immediately suspended.

2023-07-04

Poly Network publishes post-mortem attributing the 2023 exploit to Trojan-implanted malware in the compilation environment used to generate consensus node keys.

2024-04-01

Poly Network announces it will cease new deployments and transition to support-only mode for existing partners.

2024-09-11

Poly Network publishes notice of complete termination of all services effective September 30, 2024, citing 'changing market landscape.'

2024-09-30

All Poly Network services, including Poly Bridge, permanently shut down.