Identity management company Oasis Security has appointed Michael DeCesare as President. Previously, DeCesare served as president at Abnormal AI, CEO and president at Exabeam, co-chairman and CEO at Forescout, and president at McAfee. Last month, Oasis Security raised $120 million in Series B funding.

Secure endpoint OS platform IGEL has announced the appointment of Sterling Wilson as its new Global Field CTO, Business Continuity and Disaster Recovery. Previously, Wilson served as field CTO at Object First and Strategix Group, and held leadership positions at Rubrik, NetApp Cloud Data Services, Commvault, and Veeam Software.

Cyber-physical systems (CPS) protection company Claroty has appointed John Ryan as Vice President (VP) of Worldwide Partner Ecosystem. Before joining Claroty, Ryan served as VP of channel sales at Radiant Logic, in channel leadership roles at Orca Security, Illumio, Guardicore, and Mendix, and in leadership roles at Rapid7 and ForeScout.

Irving Bruckstein has been named Chief Executive Officer (CEO) at cybersecurity, AI, and IT services company Cyber A.I. Group. Previously, Bruckstein served as CIO and CISO at Washington College, and on the Board of Directors of MDREN and the Cybersecurity Intelligence Authority.

Anti-ransomware platform Halcyon has announced the appointment of Kirstjen Nielsen and Chris Inglis as Strategic Advisors. Nielsen served as a US Secretary of Homeland Security and played a central role in establishing the US cybersecurity agency CISA. Inglis was the first US National Cyber Director and, before that, served for almost three decades at the NSA.

AI-driven threat modeling firm ThreatModeler has appointed Kevin Gallagher as Chief Executive Officer (CEO). Gallagher previously served as President of Invicti Security, CEO of Endpoint Protector by CoSoSys, CRO at Invicti, Acunetix, and NetSparker Limited.

Thomas Bain has been appointed Chief Marketing Officer (CMO) at preemptive cybersecurity provider Silent Push. Previously, Bain served as CMO at VulnCheck and executive VP of marketing at Finite State. He is currently a senior advisor at Factory Cybersecurity and an advisory board member at iVerify, Autumn8 AI, Wisr AI, and Securin Inc.

The United States Department of War (DoW) appointed David Vaughn as Technical Advisor for Data Infrastructure. Vaughn will support Kirsten Davies, who was sworn in as Chief Information Officer (CIO) of the DoW on December 23, 2025. Vaughn is a decorated U.S. Army Chief Warrant Officer 4 (Cyber), and brings nearly three decades of experience as a cybersecurity executive spanning cyber operations, intelligence, and enterprise risk management across the public and private sectors.

AI-powered application security firm Black Duck has named Dom Glavach as Chief Information Security Officer (CISO). Glavach recently served as CISO and Chief Security Strategist at CyberSN. Previously, through Concurrent Technologies Corporation, he served as CISO and principal cybersecurity and information security engineer for various projects.

Software supply chain risk management firm Finite State has appointed Ann Miller as Vice President (VP) of Marketing. Miller recently served as Head of Marketing at Horizon3.ai. Previously, she held senior marketing positions at iboss and Cylance.

Secure container images provider Minimus has appointed Yael Nardi as Chief Business Officer (CBO). Nardi joins Minimus from Meitar NY Inc, where she most recently served as Director. Previously, she was an associate attorney and then a partner at the law firm.

John Clancy is the new Chief Executive Officer (CEO) of Bitsight, succeeding Steve Harvey, who held the position for six years. Clancy joins Bitsight from PSG Equity, where he served as Managing Director and Head of Portfolio Operations. Previously, he served as CEO, president, and COO at various companies.

Anti-ransomware platform Halcyon has announced the appointment of Dave Hannigan as Field Chief Information Security Officer (CISO). Hannigan, who most recently served as VP and CISO at Nubank, was a founding member of the Office of the CISO at Google Cloud, and previously served as CISO at Spotify and Capital One.

Pamela McLeod has been appointed Chief Information Security Officer (CISO) of the state of New Hampshire, replacing Ken Weeks, who served in the position for approximately four years. McLeod, currently the cybersecurity director of the City of Iowa, previously served as CISO for New Hampshire’s Concord School District and was a co-founder and board member of the New Hampshire CTO Council.

Aspen Digital has appointed Matt Altomare as its new Senior Director for Cybersecurity Programs, effective immediately. Altomare most recently led threat hunting operations at the US cybersecurity agency CISA and helped establish the Joint Ransomware Task Force. Previously, he served as an advisor on cyber policy within the Office of the Under Secretary of Defense.

Scott Goree has been named Senior Vice President (SVP) of Channel and Alliances at identity security provider Delinea. Goree, who recently served as SVP of Partners and Commercial Sales at Optiv, previously led Skyhigh Security’s channel partner program.