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{"actor":"system:backfill","investigation_id":"b259e90f-71df-4447-a93f-7d6ff994de7d","kind":"publish","page_slug":"shido","published_at":"2026-05-28T08:10:48.557Z","sequence_num":1,"snapshot":{"content_type":"investigation","entity_name":"Shido","sections":[{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://www.cryptotimes.io/2024/02/29/shido-token-plummets-94-as-hacker-drains-staking-contract/","type":"other","url":""},{"credibility":3,"name":"https://smartcontractshacking.com/hacks/shido-hack-2024","type":"other","url":""},{"credibility":3,"name":"https://www.web3isgoinggreat.com/?id=shido-contract-exploit","type":"other","url":""},{"credibility":3,"name":"https://crypto.news/shido-token-dives-over-90-after-ethereum-staking-contract-exploit/","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://crypto.news/shido-token-dives-over-90-after-ethereum-staking-contract-exploit/","type":"other","url":""},{"credibility":3,"name":"https://medium.com/coinmonks/winter-2024-crypto-crime-report-private-key-exploits-new-serial-hacker-ponzi-schemes-fake-75f4c8b6e03d","type":"other","url":""},{"credibility":3,"name":"https://www.cryptopotato.com/heres-why-the-shido-token-crashed-94-despite-the-ongoing-market-rally/","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://smartcontractshacking.com/hacks/shido-hack-2024","type":"other","url":""},{"credibility":3,"name":"https://www.cryptotimes.io/2024/02/29/shido-token-plummets-94-as-hacker-drains-staking-contract/","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://www.bitcoininsider.org/article/242623/shido-network-shido-loses-half-its-token-supply-massive-hack","type":"other","url":""},{"credibility":3,"name":"https://invezz.com/news/2024/02/29/shido-network-shido-loses-half-of-its-token-supply-in-a-massive-hack/","type":"other","url":""},{"credibility":3,"name":"https://www.coingecko.com/en/coins/shido","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://tracxn.com/d/companies/shido/__TvkEEseDh7mlmW9L2-1NtswGovV95dgS_nc1uSqsoTA","type":"other","url":""},{"credibility":3,"name":"https://shido.io/","type":"other","url":""},{"credibility":3,"name":"https://crypto.news/shido-token-dives-over-90-after-ethereum-staking-contract-exploit/","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://www.coingecko.com/en/coins/shido","type":"other","url":""},{"credibility":3,"name":"https://coinmarketcap.com/currencies/shido-network/","type":"other","url":""}]}],"sources_used":[],"summary":"Shido Network (SHIDO) is a Layer-1 proof-of-stake blockchain project founded in Sweden in 2021. On February 29, 2024, an attacker exploited the Ethereum-based SHIDO staking contract by transferring ownership to a new address and upgrading it with a hidden token-withdrawal function, draining over 4.3 billion tokens and causing the price to collapse 94% within 30 minutes. On-chain investigator ZachXBT linked the exploit to a serial hacker responsible for the OKX (December 2023) and Concentric Finance (January 2024) hacks, with the attack vector in each case being private key compromise via social engineering.","timeline":[{"date":"2021-01-01","event":"Shido Network founded in Bromma, Sweden by Bjorn Bonnevier and Edin Maloku.","source":""},{"date":"2023-12-01","event":"OKX exploit (~$2.7M) occurs; ZachXBT would later allege on-chain links to the Shido attacker.","source":""},{"date":"2024-01-22","event":"Concentric Finance hacked for approximately $1.8M via social engineering / malware attack on a team member with deployer wallet access.","source":""},{"date":"2024-02-24","event":"Shido announces mainnet launch scheduled for the following week.","source":""},{"date":"2024-02-29","event":"Shido Ethereum staking contract exploited: ownership transferred, hidden withdrawToken() function introduced, 4.35 billion SHIDO tokens (~$3.3M realized) drained. Token price collapses 94% within 30 minutes. PeckShield publicly discloses the breach.","source":""},{"date":"2024-02-29","event":"ZachXBT traces exploiter funding through Across protocol (Arbitrum) and Layerswap; identifies alleged link to OKX and Concentric Finance hacks via shared attacker infrastructure.","source":""},{"date":"2024-02-29","event":"Shido team replaces compromised deployer address, suspends DEX liquidity provisioning, contacts CEXs to freeze associated tokens, and promises to refund all stakers.","source":""}]},"v":1}