Obsidian Security, a trusted SaaS security platform for global companies like Snowflake, T-Mobile, and Pure Storage, is growing its go-to-market leadership team with five key new hires. This move positions the company to scale operations, address emerging agentic AI security challenges, and advance toward long-term growth and IPO readiness.

The company welcomed five new leaders to its team: Alison Tierney as VP of Go-to-Market 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 spearhead its Mid-Market expansion. These additions complement the recent hire of Chief Product Officer Khanh Tran, formerly VP of Product Management at CrowdStrike, as Obsidian builds an industry-leading executive team. These leadership moves come amid unprecedented SaaS security risks, including AI-driven attacks, application sprawl, embedded co-pilots, and AI agents exploiting overly permissive OAuth tokens.

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“We’re proud to welcome leaders who have chosen Obsidian because they share in our mission and recognize the momentum we’ve built,” said Brian Murphy, Chief Revenue Officer of Obsidian Security. “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 presents a double-edged sword for SaaS security. While these agents boost productivity, they also increase potential risks, since they use the same connections that SaaS apps rely on to communicate with each other. Persistent OAuth permissions can create vulnerabilities that malicious AI agents exploit. Obsidian addresses this challenge through its foundational Knowledge Graph, which unifies SaaS, endpoint, network, and identity data, providing contextual insight into AI agent behavior and application relationships.

By closely monitoring app usage, workload context, and in-app activity, the platform helps Obsidian spot subtle OAuth issues that could signal a compromised AI agent. Leveraging these capabilities, Obsidian partners with Fortune 500 clients to safely and rapidly adopt agentic AI solutions.

Obsidian’s new executives bring proven scale expertise. Tierney comes from Snowflake, where she led global sales strategy; Elinburg brings more than 26 years of experience in enterprise security; McHenry adds his background in building global security practices; Lei brings deep expertise in growth marketing; and Mihevc bolsters the company’s mid-market sales leadership.

“AI is changing the threat landscape faster than most organizations can respond,” said Hasan Imam, CEO of Obsidian Security. “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.”

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Obsidian protects critical SaaS applications like Microsoft 365 and Salesforce for more than 200 organizations worldwide, running data centers across the US, Europe, the Middle East, and Australia to keep customers safe while supporting enterprise-ready AI adoption

FAQs

1. Who are the new executives joining Obsidian Security’s leadership team?

Obsidian Security has added five key leaders: Alison Tierney as VP of Go-to-Market Strategy, Corey Elinburg as Field CTO, Brian McHenry as VP of Worldwide Solutions Engineering, Tina Lei as VP of Revenue Marketing, and Tyler Mihevc to lead Mid-Market expansion. These hires complement the recent appointment of Khanh Tran as Chief Product Officer.

2. Why is Obsidian Security expanding its go-to-market leadership team?

The expansion strengthens the company’s ability to scale operations, address emerging agentic AI security challenges, and position Obsidian for long-term growth and eventual IPO readiness. The new leaders bring expertise in sales, engineering, marketing, and global expansion to drive market impact.

3. How does Obsidian address AI-driven SaaS security risks?

Obsidian leverages its Knowledge Graph to unify SaaS, endpoint, network, and identity data, providing contextual insight into AI agent behavior. By monitoring app usage, workload context, and in-app activity, the platform identifies OAuth vulnerabilities and potential AI agent compromises, helping enterprises safely adopt agentic AI solutions.

4. What strategic goals will these new executives help Obsidian achieve?

The new leadership team will drive scaling of Obsidian’s go-to-market operations, enhance mid-market and international expansion, accelerate adoption of secure AI solutions, and ensure the company is prepared for long-term growth and IPO readiness.

5. Which organizations and applications does Obsidian Security protect?

Obsidian secures critical SaaS applications like Microsoft 365 and Salesforce for over 200 organizations worldwide. Its infrastructure spans data centers across the US, Europe, the Middle East, and Australia, enabling safe enterprise-ready AI adoption while mitigating complex SaaS security risks.

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