Palo Alto, California – Obsidian Security, a prominent SaaS security platform, has announced the strategic expansion of its go-to-market leadership team with five new appointments, positioning the company to scale operations, counter evolving AI-powered security threats, and progress towards long-term growth and IPO readiness.The new hires include Alison Tierney as VP of Go-to-Market Strategy, Corey Elinburg as Field Chief Technology Officer, Brian McHenry as Vice President of Worldwide Solutions Engineering, Tina Lei as VP of Revenue Marketing, and Tyler Mihevc, who will lead Mid-Market expansion. These additions follow the recent appointment of Khanh Tran, formerly VP of Product Management at CrowdStrike, as Chief Product Officer, as Obsidian continues to build its executive team.The leadership expansion occurs as organizations worldwide face increasing SaaS security risks stemming from AI-powered attacks, extensive application sprawl, embedded co-pilots, and AI agents leveraging overly permissive OAuth tokens. Brian Murphy, Chief Revenue Officer of Obsidian Security, stated, “We’re proud to welcome leaders who have chosen Obsidian because they share in our mission and recognize the momentum we’ve built. Their confidence and expertise strengthen our ability to scale every part of our go-to-market engine—from engineering and sales to mid-market expansion and international strategy. As our customers face growing pressure to secure their SaaS environments while driving innovation, our success in meeting those demands depends on the strength of our team. This is a strategic inflection point, and we’re fully committed to increasing our market impact and driving long-term revenue growth.”Agentic AI, while offering significant productivity gains, also introduces new security vulnerabilities. These agents expand the attack surface by using the same integration mechanisms as SaaS-to-SaaS integrations. AI-embedded SaaS tools and autonomous systems, often operating with excessive permissions via long-standing OAuth connections, amplify the inherent blind spot in SaaS-to-SaaS integrations. Obsidian’s foundational Knowledge Graph provides a distinct advantage in addressing this issue by unifying SaaS, endpoint, network, and identity data. This integration offers contextual insight to understand not only what AI agents are accessing but also how that access fits within the broader ecosystem of application relationships and user behaviors. The platform’s deep visibility into application usage, enriched with workload context and in-app activity monitoring, enables the detection of subtle OAuth token anomalies that could indicate malicious or compromised AI agents. This understanding of SaaS interconnections is crucial for securing environments where autonomous agents are becoming new actors. Building on this capability, Obsidian is collaborating with Fortune 500 customers to develop enterprise-tested solutions for the safe and rapid adoption of Agentic AI.The new leadership team brings extensive experience in scaling operations. Alison Tierney joins as VP of GTM Strategy, previously serving as SVP of Sales and VP of Global Sales Strategy at Snowflake, where she managed global expansion and high-growth sales organizations. She also held sales leadership roles at AppDynamics and Oracle. At Obsidian, Tierney will focus on developing unified go-to-market strategies and leading international expansion initiatives. Corey Elinburg, the new Field Chief Technology Officer, has over 26 years of enterprise security leadership experience, including his role as Chief Information Security Officer (CISO) at CommonSpirit Health, the parent organization of Dignity Health, where he oversaw security and IT operations for over 175,000 employees across more than 2,200 care sites in 24 states. His background offers valuable insight into securing large-scale, distributed organizations. Brian McHenry, VP of Worldwide Solutions Engineering, comes from F5, where he spent 16 years building and leading the global security practice for technical sales. He was instrumental in shaping global security sales strategy and played key roles in F5’s acquisitions of Shape Security for $1 billion and Volterra for $500 million. His experience in scaling security solutions positions him to lead Obsidian’s global technical sales efforts. Tina Lei, appointed VP of Revenue Marketing, brings extensive growth marketing expertise from NinjaOne, where she progressed from Performance Marketing Specialist to VP of Growth over nearly seven years. Lei was responsible for digital marketing, website optimization, and product-led growth, managing multi-million-dollar budgets and building high-performing teams. Tyler Mihevc will lead Obsidian’s Mid-Market revenue team, leveraging his proven sales leadership from high-growth companies such as Craft.co (Worldwide VP of Sales) and PredictHQ (VP of Worldwide Sales and Customer Success), along with senior roles at Okta. His appointment aims to enhance Obsidian’s ability to serve organizations navigating AI-integrated business environments.Obsidian Security, founded by security leaders who previously worked at CrowdStrike, Okta, Palo Alto Networks, and Cylance, protects over 200 organizations across North America, Europe, the Middle East, Southeast Asia, Australia, and New Zealand, including numerous Fortune 1000 and Global 2000 companies. The company secures business-critical SaaS applications like Microsoft 365 and Salesforce, which are central to modern work. Obsidian maintains data centers in the US, Europe, the Middle East, and Australia to provide robust protection for its global customer base, offering a modular approach to SaaS security that caters to both large and small enterprises. Hasan Imam, CEO of Obsidian Security, commented, “AI is changing the threat landscape faster than most organizations can respond. This moment demands leadership that understands both the scale of the challenge and the urgency of the opportunity. We’re building a team that’s done this before—so we can stay ahead of emerging threats and deliver on the promise of safe, scalable AI adoption.”