WebTPA Data Breach Affects 2.4 Million Health Insurance Policyholders. WebTPA, a Texas-based provider of administration services to health insurance and benefit plans has recently started notifying 2,429,175 benefit plan WebTPA, a provider of administration services to health insurance and benefit plans, has confirmed that the protected health information of more than 2.4 million policyholders was exposed in a 2023 cyberattack. Third-party company: WebTPA.