UnitedHealth CEO testifies before U.S. Senate and House on hack

By Ahmed Aboulenein

WASHINGTON, May 1 (Reuters) - UnitedHealth CEO Andrew Witty began his first of two scheduled testimonies in front of Congressional panels on Wednesday, answering questions from lawmakers about the recent cyberattack at the company's technology unit that impacted almost all patients and providers.

The

hack

at Change Healthcare, a provider of healthcare billing and data systems that processes about 50% of U.S. medical claims, on Feb. 21 caused widespread disruption in payment to doctors and health facilities.

Health and personal data of a "substantial proportion" of Americans were stolen, UnitedHealth said last week.

In letters to the congressional committees Witty will appear before, the American Hospital Association said an internally survey of its members found that 94% of hospitals reported damage to cash flow and more than half reported "significant or serious" financial damage due to Change's inability to process claims.

Hackers breached UnitedHealth's tech unit on Feb. 12 by using stolen login credentials that gave them remote access to its network, Witty will tell the Senate Finance Committee on Wednesday morning and the House Energy Subcommittee on Oversight and Investigations in the afternoon.

In a written testimony published earlier this week, Witty said UnitedHealth, the largest U.S. health insurer, has been working with the FBI and prominent cybersecurity firms to investigate the hack. (Reporting by Ahmed Aboulenein, Editing by Nick Zieminski)