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Before 2023 · Any size: 443 publicly reported crypto security incidents, about $12.81B lost in total. Data comes from the public DefiLlama incident dataset (back to 2011), updated weekly. Click an incident for details. Breakdown by technique → · Weekly and monthly reports →

Last 90 days2026202520242023Before 2023All years
Any size$1M+$10M+$100M+
DateIncidentTechniqueReported loss
2015-08-15BTERSecurity incidentBitcoinKey CompromisePrivate Key Compromised$1.6M
2015-05-22BitfinexSecurity incidentBitcoinKey CompromiseHot Wallet Key Compromised$329K
2015-02-18KipCoinSecurity incidentBitcoinKey CompromisePrivate Key Compromised$728K
2015-02-17BTERSecurity incidentBitcoinKey CompromisePrivate Key Compromised$1.8M
2015-01-27796Security incidentBitcoinAccess ControlImproper Access Control$270K
2015-01-05BitstampSecurity incidentBitcoinSocial EngineeringPhishing$5.2M
2014-07-29CryptsySecurity incidentBitcoin, LitecoinKey CompromisePrivate Key Compromised$9.6M
2014-07-13MintpalSecurity incidentBitcoinAccess ControlImproper Access Control$2.0M
2014-03-04PoloniexSecurity incidentBitcoinProtocol LogicWithdrawal Logic Flaw$50K
2014-03-02FlexcoinSecurity incidentBitcoinProtocol LogicWithdrawal Logic Flaw$600K
2014-02-17PicostocksSecurity incidentBitcoinKey CompromisePrivate Key Compromised$4.4M
2014-02-07Mt. GoxSecurity incidentMajorBitcoinKey CompromisePrivate Key Compromised$470.0M
2013-11-11BitcashSecurity incidentBitcoinAccess ControlImproper Access Control$100K
2013-10-23Inputs.ioSecurity incidentBitcoinFrontend & InfrastructureKey Leaked via Infrastructure$1.2M
2012-09-05BitfloorSecurity incidentBitcoinFrontend & InfrastructureKey Stored Publicly$250K
2012-05-11BitcoinicaSecurity incidentBitcoinFrontend & InfrastructureKey Leaked via Infrastructure$90K
2012-03-01BitcoinicaSecurity incidentBitcoinFrontend & InfrastructureKey Leaked via Infrastructure$228K
2011-06-19Mt. GoxSecurity incidentBitcoinAccess ControlImproper Access Control$8.8M

Source: DefiLlama Hacks. This section restates public reports and is not OceanAlt's judgment of any party. To report an error, email business@oceanalt.com; we review within 48 hours.