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🛡️ '''Excess cyber insurance''' is a form of [[Definition:Cyber insurance | cyber insurance]] that provides additional [[Definition:Limit of liability | limits of liability]] above the [[Definition:Primary insurance | primary]] cyber policy, responding only after the underlying coverage has been exhausted by [[Definition:Claims | claims]] payments. In a typical [[Definition:Layered program | layered insurance program]], a corporate [[Definition:Policyholder | policyholder]] secures a primary cyber policy with a defined limit, then stacks one or more excess layers on top to achieve the total [[Definition:Coverage | coverage]] tower needed to protect against large-scale [[Definition:Cyber risk | cyber events]] such as widespread [[Definition:Ransomware | ransomware]] attacks, major [[Definition:Data breach | data breaches]], or systemic business interruption incidents.

📐 Structurally, excess cyber policies attach at the point where the underlying layer — whether the primary policy or a lower excess layer — is exhausted. If a primary policy provides $5 million in coverage and the first excess layer offers an additional $10 million, the excess carrier's obligation begins only once the $5 million primary limit has been fully paid. This [[Definition:Attachment point | attachment point]] mechanism is central to how risk is distributed among multiple [[Definition:Insurance carrier | carriers]] participating in a single insured's cyber program. Excess cyber policies typically follow the terms and conditions of the primary policy (known as "[[Definition:Following form | following form]]"), though they may include certain modifications, exclusions, or sublimits negotiated separately. [[Definition:Insurance broker | Brokers]] play a critical role in structuring these towers, coordinating placement across primary and excess markets — which may include [[Definition:Lloyd's syndicate | Lloyd's syndicates]], domestic carriers, [[Definition:Bermuda | Bermuda]] markets, and specialized [[Definition:Managing general agent (MGA) | MGAs]] — to ensure seamless coverage and minimize gaps between layers.

💰 The growing demand for excess cyber coverage reflects the escalating financial severity of cyber incidents, where a single event can generate losses well beyond what a primary policy alone can absorb. High-profile [[Definition:Insured loss | insured losses]] from events such as the NotPetya attack and major healthcare and retail breaches demonstrated that even substantial primary limits could prove insufficient. For [[Definition:Underwriter | underwriters]], excess cyber positions carry distinct risk characteristics: they are less likely to be triggered than primary layers, but when they do respond, the underlying event is typically severe and complex. Pricing of excess layers considers the quality of the primary carrier, the insured's [[Definition:Endpoint security | security posture]], [[Definition:Aggregation risk | aggregation risk]] across the portfolio, and the evolving [[Definition:Threat landscape | threat landscape]]. As [[Definition:Regulatory compliance | regulatory regimes]] globally expand mandatory [[Definition:Data breach notification | breach notification]] and penalties — from the EU's GDPR to varying state-level laws in the United States and Asia-Pacific data protection statutes — demand for higher total cyber limits, and therefore excess capacity, continues to grow.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Cyber insurance]]
* [[Definition:Excess insurance]]
* [[Definition:Layered program]]
* [[Definition:Attachment point]]
* [[Definition:Following form]]
* [[Definition:Aggregation risk]]
{{Div col end}}

Definition:Excess cyber insurance - Revision history

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