London, Nov. 13, 2020 (AltAfrica)-A senior U.S. cybersecurity official is leaving government, an official familiar with the matter said Thursday, part of a wider thinning of President Donald Trump’s administration following Joe Biden’s election win.

Bryan Ware, the Assistant Director for Cybersecurity for the Department of Homeland Security’s Cybersecurity and Infrastructure Security Agency (CISA), confirmed to Reuters that he had handed in his resignation on Thursday

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He didn’t provide details, but a U.S. official familiar with the matter said the White House asked for Ware’s resignation earlier this week.

CISA and the White House did not immediately return an email seeking comment

This is the second official to quit their job in four days after top US prosecutor with the justice department resigned after attorney general, William Barr sectioned the probe of alleged irregularities in the presidential election

Mr Pilger said he had quit in response to Mr Barr’s memo. “Having familiarised myself with the new policy and its ramifications… I must regretfully resign from my role,” he wrote in an email to colleagues

The news of Bryan Ware’s resignation was first reported here by cybersecurity-focused news site CyberScoop.

Ware is one of several officials who’ve left national security-related posts after Trump’s loss, which the president has yet to concede.

The churn is being closely watched amid concern for the integrity of the transition from Trump to Biden.

Another top U.S. cybersecurity official Christopher Krebs, who worked on protecting the election from hackers but drew the ire of the Trump White House over efforts to debunk disinformation, has told associates he expects to be fired, three sources familiar with the matter told Reuters.

Krebs, who heads the Department of Homeland Security’s Cybersecurity and Infrastructure Security Agency (CISA), did not return messages seeking comment. CISA and the White House declined comment.