E&O vs cyber liability: what startups actually need

The short version

Technology errors and omissions responds when a client claims your service failed to deliver what you promised and they lost money as a result. Cyber liability responds when data is exposed, systems are held to ransom or a network event interrupts your business. The difference is the cause of loss, not the size of it.

Two examples that make the line clear

Your billing engine miscalculates invoices for six months and a client sues for the revenue they lost. That is errors and omissions. An attacker steals your production database and customer data is published. That is cyber. Now consider a middle case: an attacker gets in through a flaw in the software you shipped to a customer, and the customer sues for their breach costs. That claim touches both policies, which is exactly why buying them on one form matters.

Why a combined form is usually the right answer

• No coverage gap. With two carriers, each can argue the other should pay. On one form there is a single claims handler.
• One retention. You pay one deductible instead of two on a claim that spans both.
• Lower total cost. A combined form is typically cheaper than two separate policies with the same limits.

The main reason to split them is limit strategy. If your customer contracts demand 5 million of technology errors and omissions but you only need 1 million of cyber, separate towers can be more efficient. That is unusual below 25 million in revenue.

What startups should buy at each point

• Pre revenue. Often nothing yet, unless an early design partner requires it. Cyber alone is a reasonable first purchase.
• First paying customers. A combined technology errors and omissions and cyber form at 1 million, which is what most vendor agreements ask for.
• Enterprise contracts. Move to 2 to 5 million and check the certificate requirements before signing.

Compare the two costs directly with the technology E&O calculator and the cyber liability calculator.