Hack The Box (HTB) has announced the appointment of Konstantinos Dolkas as Chief Technology Officer (CTO) and the promotion of Christine Bartlett to Chief Marketing Officer (CMO). Previously, Dolkas served as CTO at OWNR Deutschland GmbH, while Bartlett, HTB’s VP of marketing since 2025, served as CMO at SonicWall and in marketing leadership positions at Cisco.

The U.S. Department of Energy has appointed Andrew McClure as Director of the Office of Cybersecurity, Energy Security, and Emergency Response (CESER). As Director, McClure will oversee efforts to harden critical infrastructure, strengthen preparedness and emergency response capabilities, and build partnerships across federal, state, local, and private-sector stakeholders.

Sumo Logic has announced the appointment of Chris Malone as Chief Executive Officer (CEO) and Conor Burns as Chief Financial Officer (CFO). Malone previously served as CEO, president, and CFO at Applause. Previously, Burns was senior VP of Operations at Applause and CFO at EPFR.

Nozomi Networks has appointed co-founder Andrea Carcano as Chief Executive Officer (CEO), resuming the role he held when the company launched. Carcano, who served as Nozomi’s CPO for the past decade, resumes the CEO role from Edgard Capdevielle, who transitions to executive advisor. Nozomi Networks was acquired by Mitsubishi Electric for $1 billion.

Datavault AI Inc. (NASDAQ: DVLT), a provider of data monetization, credentialing, digital engagement, and real-world asset tokenization technologies, has appointed Barry Childe as its Chief Information Security Officer (CISO). Childe previously served as a Distinguished Engineer at HSBC and held senior technology roles at Barclays Capital, The Royal Bank of Scotland, and VMware. He also co-founded quantum-encryption company Arqit.

High-assurance cybersecurity company Everfox, formerly Forcepoint Federal, announced that John DeSimone has been named Chief Operating Officer (COO). Prior to Everfox, DeSimone served as Chief Executive Officer of Nightwing. He was also President of Raytheon’s Cybersecurity, Intelligence & Services business, and held senior leadership positions at CSRA, CSC, and IBM.

Automated Certificate Lifecycle Management (CLM) and digital certificates provider Sectigo announced the appointment of Prem Hareesh as Corporate Chief Technology Officer. Hareesh joins Sectigo from Experian, where he served as CTO of the North American Commercial, Fraud & Identity division for over four years. He previously served as CTO at Spireon and held technology leadership roles at Cisco. Hareesh succeeds Mark Bilger, who will be retiring at the end of the year after three years with Sectigo.

Meta has appointed Assaf Keren as its new Chief Information Security Officer (CISO). Keren most recently served as Chief Security Officer at Qualtrics. Prior to Qualtrics, he held leadership roles at PayPal for nine years, including CISO. Keren is transitioning into the role of Meta CISO, replacing Guy Rosen, who will depart later this year.

DLP startup Jazz has expanded its leadership team with the appointment of Sean Robinson as VP of Sales, Rickie Goyal as VP of Revenue Operations, Shani Nago as VP of HR, and Lior Magram as VP of Research and Development, and with the promotion of Michael Calev to COO and Danielle Guetta to VP of Marketing. Previously, all held leadership positions across various organizations: Robinson led sales at Halcyon and Palo Alto Networks, Goyal was VP of RevOps at Cyberhaven, Nago led the people function at Axonius, Magram led cybersecurity embedded research at IDF Unit 81, Calev was VP of Strategy & Corporate Development at Perception Point, and Guetta led product marketing at Astrix Security. Jazz emerged from stealth in March 2026.

AJ Shipley has been appointed Chief Product Officer (CPO) at CrowdStrike. Most recently, Shipley served as CPO at Splunk Security. Previously, he led product management for Cisco’s Threat Detection and Response, and served in leadership roles at Palo Alto Networks.

Vulnerability and exposure management firm Brinqa has announced the appointment of Ron Dovich as Chief AI and Automation Officer, David Allen as Chief Technology Officer (CTO), Steve Biagioni as Chief Financial Officer (CFO), and James Walta as Vice President of Product. Previously, Dovich was SVP of Engineering at Brinqa; Allen held leadership roles at Prevalent, BeyondTrust, and eEye Digital Security; Biagioni was CFO at Valimail; and Walta served in various leadership roles at Brinqa.

OT security company Corsha has announced the appointment of Melissa Keohane as Chief Operating Officer (COO), Kevin Bocek as Chief Product Officer (CPO), and Eric Kumar as Chief Customer Officer (CCO). Previously, Keohane served as SVP of Business Operations at CyberArk and Chief Legal and People Officer at Venafi; Bocek was SVP Innovation at CyberArk and Chief Innovation Officer at Venafi; and Kumar became CCO after serving as Vice President of Operations and Head of Customer Success at Corsha.

Russell Rosa has been appointed Chief Revenue Officer (CRO) at N-able. Most recently, Rosa was CRO at Sumo Logic, after serving as the company’s Senior Vice President of Americas Sales. Previously, he held sales leadership positions at Cisco, Actifio, and VCE.

Armadin has announced that Stacy O’Mara has joined the company as Chief Policy Officer and Director of Global Government Affairs. Previously, she held leadership positions at Venable LLP, Google, Mandiant, and FireEye.

F5 has announced the appointment of Cathy Peterman as Chief People Officer. Most recently, Peterman served as Chief People Officer at Wayfair. Previously, she held HR leadership roles at Amazon, QVC, and Gap International.

Sean Murphy has joined F5 as a Field Chief Information Security Officer (Field CISO) – North America. A US Air Force veteran, Murphy previously served as Senior VP and CISO at BECU and Primera Blue Cross, VP of Healthcare Information Privacy and Security Officer at Leidos and SAIC, and CISO at the National Intrepid Center of Excellence.