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Risky Bulletin: Sean Plankey withdraws CISA nomination

Risky.Biz • April 24, 2026

Sean Plankey withdraws his CISA Director nomination, Russians hacked the Bundestag President, Discord users gain unauthorised access to Anthropic’s Mythos, and the US sanctions a Cambodian senator for running cyber scam compounds.

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Sean Plankey Withdraws from CISA Nomination Amid Senate Stalemate Sean Plankey has withdrawn his nomination to lead the Cybersecurity and Infrastructure Security Agency (CISA) after a 13-month delay in Senate confirmation. His nomination, initially made by Donald Trump in March 2025, faced significant opposition, particularly from Senator Rick Scott over unrelated Coast Guard issues. Plankey stated in his letter to the White House that it had become clear the Senate would not confirm him. The agency has been without a permanent leader since the departure of acting director Madhu Gottumukkala in February 2026, following a series of security missteps. CISA has experienced severe budget cuts and staff reductions, which have raised concerns among cybersecurity experts about the agency's ability to defend against threats. The agency's challenges are compounded by ongoing cyberattacks against the U.S. government and its allies. Nick Andersen is currently serving as the acting director while the White House seeks a new nominee. 8 sources 39

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Risky Bulletin: Sean Plankey withdraws CISA nomination

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