Twitter Shakes Up Security Team

The head of security and the chief information security officer were both let go this week, as the company reorganized its security team.

Peiter Zatko, the head of security who is better known within the security community as "Mudge," is no longer at the company. The chief information security officer will leave in the coming weeks.

The changes follow an assessment of how the organization was being led and the impact on top priority work, according to a memo from Parag Agrawal, the chief executive, that was sent to employees on Wednesday and obtained by The New York Times. The nature of the situation limited what Mr. Agrawal could share with employees.

Ms. Sethi and Mr. Zatko did not reply to requests for comment.

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Peiter Zatko has a long career in both government and private industry.

Since taking over from Jack Dorsey, who was a founder, Mr. Agrawal has shuffled the company's executives. The chief design officer and the head of engineering were dismissed in December.

Mr. Zatko and Ms. He has a long career in both government and private industry. He worked at several companies before taking on his role at Twitter. He was a member of the hacking group Cult of the Dead Cow in the 1990s. Teenagers took over high-profile users' accounts at the company in July 2020 and he was recruited to it.

Ms.Sethi joined the company after the hack and was charged with improving the company's security and protecting its user data. She had worked in security at both Walmart and I.B.M.

Current and former employees of the company say that the head of privacy engineering will become the interim chief information security officer. They held security and privacy leadership roles.