Ranjan Singh has joined human risk management and email security company Mimecast as Chief Product & Technology Officer. Prior to joining Mimecast, Singh served as Chief Product Officer at Kaseya. He also held leadership roles at Crestron Electronics and IPC Systems.

Identity security firm Semperis has named Alex Weinert as Chief Product Officer. Prior to joining Semperis, Weinert served as the VP of Identity Security at Microsoft.

Tenable has announced the appointment of Eric Doerr as Chief Product Officer (CPO). Doerr most recently served as VP of Security Products at Google Cloud, and prior to Google he spent more than 20 years at Microsoft, including as General Manager of Microsoft Account and Corporate VP of Cloud Security and the Microsoft Security Response Center (MSRC).

Docusign announced that Michael Adams has been appointed Group Vice President (GVP) and Chief Information Security Officer (CISO). Adams most recently served as the CISO of Zoom and previously held an executive role at Palantir. He was also an advisor to two Chairmen of the Joint Chiefs of Staff. Docusign’s previous CISO, Kurt Sauer, has stepped down to pursue new opportunities.

Security awareness training firm KnowBe4 has named Bryan Palma as president and chief executive officer (CEO), effective May 5. Palma joins the company from Trellix, where he most recently served as chief executive officer. KnowBe4’s founder and current CEO Stu Sjouwerman has transitioned to the role of executive chairman.

Threat intelligence firm Team Cymru has appointed Joe Sander as its Chief Executive Officer. Sander succeeds founder Rabbi Rob Thomas, who is retiring but will remain actively involved on Team Cymru’s Board of Directors. Sander most recently served as CEO of Radiant Logic and previously as CEO of Arxan Technologies.

CISA has appointed Madhu Gottumukkala as its new Deputy Director. Gottumukkala previously served as Commissioner for the South Dakota Bureau of Information and Technology (BIT). He also served as the state’s Chief Technology Officer. In the past, he also held leadership roles at Sanford Health, CallHealth, and Polycom. A CISA Director has yet to be appointed.

BeyondTrust announced that Sean Malone has become the company’s Chief Information Security Officer (CISO). Prior to BeyondTrust, Malone served as CISO at Demandbase, VP of risk products at BitSight, and CISO at VisibleRisk. He also held leadership roles at Amazon, Accenture and FusionX.

Wendi Whitmore has taken the role of Chief Security Intelligence Officer at Palo Alto Networks. She previously held the role of Senior Vice President of the company’s Unit 42 threat research group. Prior to Palo Alto Networks, she held the role of Vice President at IBM X-Force.

Phil Venables, former CISO of Google Cloud, has joined Ballistic Ventures as a Venture Partner. Venables has served as a CISO and security executive across several large organizations, including Google Cloud, Goldman Sachs, Deutsche Bank.

Vaultree has appointed David Currie as its new CEO. Currie previously served as Chief Information Security Officer (CISO) at Nubank, CISO at Klarna, Group CISO at Hong Kong Exchanges and Clearing Limited, Head of Information Security at Visa, and Global Head of Cryptography at Barclays. Ryan Lasmaili, Vaultree’s current CEO and co-founder, will transition to the role of Chief Strategy Officer (CSO).

Chris Burger has been named the Chief Information Security Officer (CISO) of F5. Burger previously held leadership roles at Russell Investments, Slalom, Clearwire Washington Mutual, and Corbis.

Data security and management firm Bedrock Security has appointed George Gerchow as its new Chief Security Officer (CSO). Prior to joining Bedrock Security, Gerchow served as interim CISO at MongoDB, and before that he spent nine years at Sumo Logic as CSO and senior vice president of IT.

MorganFranklin Cyber, a newly independent cybersecurity practice backed by private equity firm M|C Partners, announced that Raffi Joukhadarian has been named Managing Director and Chief Financial Officer (CFO). Joukhadarian has been with MorganFranklin since 2018 and previously held leadership roles at New York Life, Citigroup and Standard Chartered Bank.

Data security firm Rubrik has appointed Kavitha Mariappan to the newly created role of Chief Transformation Officer (CTxO). Mariappan previously held executive and leadership roles at Zscaler, Databricks, and Cisco. Most recently, she served as Executive Vice President of Customer Experience and Transformation at Zscaler.

Dan Kaufman has joined Badge, Inc. as SVP, AI and Cybersecurity, Before joining Badge, he was head of Googe’s Advanced Technology and Products (ATAP) group. Earlier in his career, Kaufman was the first Director of Cybersecurity at the Defense Advanced Research Projects Agency (DARPA).