Twitter on Tuesday afternoon responded to Zatko's testimony by reiterating a statement it made after his disclosure was initially made public.
Today’s hearing only confirms that Mr. Zatko’s allegations are riddled with inconsistencies and inaccuracies," a Twitter spokesperson said in a statement to CNN.
The spokesperson added that the company's hiring process is independent of foreign influence, and that access to internal company data is managed through measures such as background checks, access controls and monitoring systems.
The company declined to respond directly to a list of specific allegations by Zatko, including about the company's purported inability to detect whether foreign agents are on its payroll and claims that the FBI has warned Twitter it may have had at least one Chinese agent in the company.