Average cyber insurance claim severity for large accounts in the U.S. nearly doubled in 2025, according to a new Chubb report.
The insurer’s 2026 Cyber Claims Report found that average severity for businesses with $1 billion or more in revenue reached about $4.4 million in 2025, up from roughly $2.2 million in 2024. That represented a 586% increase from 2021.
“While severity remained stable in the SME segment, it increased considerably in the middle market and even more dramatically in the large account segment,” the report said. “There are several contributing factors to this increase, including the rise in business interruption expenses and the increasing cost of both data breach- and privacy-related litigation.”
The report explores Chubb’s historical claims data through last December.
Related: FCC Bans Wireless Router Imports, Citing Security Concerns
Cloud outages and ransomware attacks continued to make headlines in 2025. Forrester Research predicted in October that written cyber insurance premiums would rise 15% in 2026. Pointing to an increase in data theft-only attacks in the second half of last year, Resilience called for a shift from recovery-focused strategies to prevention-focused approaches.
In its cyber claims report, Chubb reported that middle market claim severity rose from about $619,000 to roughly $759,000 year over year. SME severity, meanwhile, fell from roughly $215,000 in 2024 to about $142,000 in 2025.
Large account claim frequency dropped from about 15 claims per 100 cyber policies in 2024 to roughly 10 in 2025, Chubb shared. Middle market frequency also declined, falling to just over 5 claims per 100 policies from about 6 the prior year. SME frequency, meanwhile, was relatively stable at about 1 claim per 100 policies.
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Cyber
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