Obsidian Security, a leading SaaS security platform trusted by global enterprises such as Snowflake, T-Mobile, and Pure Storage, has announced a major expansion of its go-to-market leadership team. The company has appointed five strategic executives to enhance its operations, respond to emerging AI-driven security challenges, and support long-term growth and IPO readiness.

The new appointments include Alison Tierney as VP of Go-to-Market (GTM) Strategy, Corey Elinburg as Field Chief Technology Officer, Brian McHenry as VP of Worldwide Solutions Engineering, Tina Lei as VP of Revenue Marketing, and Tyler Mihevc to lead Mid-Market expansion. These moves follow the recent addition of Chief Product Officer Khanh Tran, formerly VP of Product Management at CrowdStrike, highlighting Obsidian’s focus on assembling a high-caliber executive team. The appointments come at a time when organizations face unprecedented SaaS security threats stemming from AI-powered attacks, sprawling applications, embedded co-pilots, and AI agents exploiting overly permissive OAuth tokens.

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Brian Murphy, Chief Revenue Officer at Obsidian Security, said, “We’re excited to welcome leaders who share our vision and recognize the momentum we’ve built. Their expertise strengthens every aspect of our go-to-market engine—from engineering and sales to mid-market growth and global strategy. As our customers confront growing pressure to secure SaaS environments while innovating rapidly, our success relies on the strength of our team. This is a pivotal moment, and we are committed to expanding our market impact and driving sustainable revenue growth.”

Tackling AI-Driven SaaS Security Risks

While agentic AI enhances productivity, it also introduces new vulnerabilities. AI tools and autonomous agents often operate with broad permissions via persistent OAuth connections, creating additional risks in SaaS-to-SaaS integrations.

Obsidian’s Knowledge Graph technology helps organizations address these challenges by integrating data across SaaS, endpoints, networks, and identity systems. This approach provides contextual insights into AI agent activity, showing not just what systems are accessed but how these interactions fit within the broader application ecosystem and user behavior patterns.

The platform’s in-depth visibility into application usage, workload context, and in-app activity enables the detection of subtle OAuth token anomalies that could indicate compromised or malicious AI agents. By understanding SaaS interconnections, Obsidian ensures secure management of autonomous agents in enterprise environments. The company is also working with Fortune 500 clients to deliver enterprise-tested solutions for safe and efficient adoption of agentic AI.

Experienced Leadership Team

Alison Tierney, VP of GTM Strategy, previously SVP of Sales and VP of Global Sales Strategy at Snowflake, brings experience in scaling high-growth sales organizations globally, along with prior roles at AppDynamics and Oracle. She will focus on unified go-to-market strategies and international expansion.

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Corey Elinburg, Field Chief Technology Officer, has over 26 years of enterprise security experience, including serving as CISO at CommonSpirit Health, overseeing security operations for 175,000 employees across 2,200+ locations. He adds expertise in securing large-scale, distributed organizations.

Brian McHenry, VP of Worldwide Solutions Engineering, joins from F5, where he spent 16 years leading global security practices and shaping strategies that contributed to multi-billion-dollar acquisitions. He will spearhead Obsidian’s technical sales globally.

Tina Lei, VP of Revenue Marketing, comes from NinjaOne, where she led growth marketing initiatives, managing multi-million-dollar budgets and building high-performing teams.

Tyler Mihevc, leading Mid-Market revenue, brings extensive sales leadership experience from Craft.co, PredictHQ, and Okta, strengthening Obsidian’s capacity to support organizations integrating AI in their operations.

Preparing for Sustainable Growth

Founded by security experts with backgrounds at CrowdStrike, Okta, Palo Alto Networks, and Cylance, Obsidian protects more than 200 organizations across North America, Europe, the Middle East, Southeast Asia, Australia, and New Zealand, including Fortune 1000 and Global 2000 companies.

The platform secures critical SaaS applications such as Microsoft 365, Salesforce, and hundreds of other enterprise tools. Obsidian operates data centers across multiple regions, ensuring comprehensive protection for its global clientele. Its modular approach to SaaS security allows flexible solutions for organizations of all sizes.

CEO Hasan Imam commented, “AI is reshaping the threat landscape faster than most organizations can respond. This is a moment that demands leadership capable of scaling with the challenge while seizing the opportunity. We’ve built a team with proven experience so we can stay ahead of threats and ensure safe, scalable AI adoption.”

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