Does Professional Liability Cover Data Breaches?

Many E&O policies exclude some privacy and security events; cyber coverage may address breach response and liability under separate terms.

A breach can create your response expenses, a client claim, regulatory action, or lost income. An NAIC guide separates first-party cyber costs from third-party claims, and the sample Hiscox E&O form excludes some failures to protect personal information.

Compare security-failure definitions, vendor coverage, privacy liability, incident-response services, waiting periods, sublimits, and coordination in the cyber and E&O forms. Ask which responds to an accidental disclosure during your service work.

Sources for Professional Liability, E&O and Tech E&O Answers

  1. Professional Liability – US Direct Errors and Omissions Insurance. Hiscox Inc. specimen; About this Policy / Coverage for Claims Made Against You; I.A Insuring Agreement; I.B Defense; I.C Settlement; II.A Notice of Claims; II.C Optional Extended Reporting Period; III.A, III.K, III.M, III.R, III.S Exclusions; IV.A–B Limits and Deductible; VI.O Professional Services; VI.U Wrongful Act. Accessed 2026-09-25.
  2. Technology Errors and Omissions Insurance. The Hartford; What Is Technology Errors and Omissions Insurance?; Coverage; Works With Contracts; Types of Companies That Need Tech E&O Insurance. Accessed 2026-09-25.
  3. Cyber Insurance: Cybersecurity for Small Business. National Association of Insurance Commissioners; What Should Your Cyber Insurance Policy Cover?; first-party coverage; third-party coverage, pp. 1–2. Accessed 2026-09-25.
  4. Cyber liability risks. Insurance Information Institute; What cyber liability insurance covers. Accessed 2026-09-25.

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