List of major cyber attacks in 2021

Tokio Marine HCC International (TMHCCI) has released a report on cybercrime in 2021. The insurer lists the top ten cyber attacks in terms of both financial impact and reputational damage. Such incidents generated 600 million USD of losses in 2021.

Top ten worst cyber attacks in 2021

RankDateCompanyBusiness sectorCountry
1JulyKaseyaITUnited States
2MarchMicrosoft ExchangeITUnited States
3MarchSITAITSwitzerland
4MayColonial PipelineEnergyUnited States
5OctoberPichinchaBankingEcuador
6NovemberBiélorussieThe whole countryBelarus
7AugustPoly NetworkCryptocurrencyUnited States
8OctoberRENAPERITArgentina
9DecemberApache Log4jITUnited States
10MayVolkswagen USAMotorUnited States
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