No, Errors and Omissions (E&O) Insurance for accountants may only cover mistakes and missed deadlines due to negligence in the accountant’s services that lead to financial loss for clients. If the accountant’s computer network is hacked, E&O will not cover the cost of damages that result from the personal and financial information of clients being compromised. To cover third-party damages due to a breach of cybersecurity, accountants may consider adding Cyber Liability coverage to their policy.