The year 2020 saw significant growth and evolution of ics cyber attacks with the precarious move to more remote operations due to the COVID-19 pandemic. Here are the top 10 most notable cyber attacks on industrial systems for 2020.

• All these attacks were reported on in the press – public incidents
• These are all the (credible) cyber attacks that had physical consequences in 2020
• All these attacks were targeted ransomware
• Downtime estimates are conservative – public reports generally do not contain exact downtime figures, but estimates such as “at least X plants for at least N days”
• Conservative estimate of average incident cost: 63 plant-days downtime
• Almost all attacks impacted multiple plants simultaneously – not surprising – the bad guys look to maximize their profits by overwhelming our incident response teams
• Many of these attacks impacted sites that had deployed significant levels of software-based defensive, monitoring, detection and response capabilities
  
  

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