IC Oversight & Authorities — 2026-05-04

IBM Security Executive Tom Parker Emerges as Possible Contender to Lead CISA After Plankey Nomination Withdrawal

Tom Parker, an IBM security services lead who founded cybersecurity firm Hubble before its 2024 acquisition, has emerged as a potential CISA director candidate, five people told Nextgov anonymously on May 3; one described him as the Trump administration's current preferred choice. Parker has no prior government experience, and Nextgov's sources said Homeland Security Secretary Markwayne Mullin has been favoring a nominee drawn exclusively from the private sector. Plankey withdrew his nomination on April 22, per Cybersecurity Dive, after becoming entangled in a GOP senator's dispute over Coast Guard cutter contracts. CISA has been without a permanent director since the current administration took office, with Nick Andersen serving in an acting capacity and the agency having lost approximately one-third of its workforce over the past year. Nextgov's sources cautioned the selection remains fluid and the White House may choose differently.

Analysis
Per a single Nextgov report citing five anonymous sources, the selection remains fluid and a permanent CISA nomination before July 2026 is uncertain. Mullin's private-sector-only filter extends vetting timelines for candidates without prior federal service. CISA nominations also carry demonstrated exposure to unrelated Hill friction, as Plankey's Coast Guard entanglement recently proved, and the White House has no structural mechanism to insulate Parker from similar disputes. Parker's name surfacing may instead reflect a deliberate trial balloon to test Senate and industry reaction before any preference hardens.

1 sources

IBM security executive emerges as possible contender to lead CISA - Nextgov