Top 3 Costliest Cyberattacks by Financial Impact

The NotPetya/ExPetr malware campaign in 2017 is the most expensive cyberattack to date, costing an estimated $10 billion, followed by the Change Healthcare ransomware attack ($2.87 billion) and the Equifax data breach (over $1.4 billion).

The top 3

  1. Top 3 Costliest Cyberattacks by Financial Impact: The NotPetya/ExPetr destructive malware in 2017 caused an estimated $10 billion in global damages, making it the most expensive cyberattack. The 2023 MOVEit supply chain attack campaign has an industry-wide estimated cost exceeding $10 billion, while the 2011 Epsilon email system breach resulted in over $4 billion in losses.
  2. Ransomware vs. Data Breach: Which Costs More?: While major data breaches like Equifax (over $1.4 billion) and Epsilon ($4 billion) incur massive costs, recent destructive ransomware attacks like NotPetya ($10 billion) and Change Healthcare ($2.87 billion) demonstrate that ransomware can lead to even higher financial impacts through operational disruption and recovery efforts.
  3. Beyond the Breach: Long-Term Financial Fallout: Major cyberattacks incur substantial long-term costs beyond immediate fixes, including extensive legal settlements (e.g., Equifax's over $1.4 billion), regulatory fines, and stock value depreciation. Reputational damage also leads to lost revenue and diminished customer trust for years after the initial incident.

Sources

Open the full topic