Former Slack COO joins founder-led cybersecurity company to lead its next phase of growth as AI transforms enterprise trust.
NEW YORK, NY — September 9, 2026. SecurityScorecard, the global leader in threat-informed third-party risk management, announced today that Sarah Walker has joined the company as President. Walker will partner with Founder and CEO Dr. Aleksandr Yampolskiy to lead the company’s next phase of growth.
SecurityScorecard pioneered the cybersecurity ratings category, making security measurable and giving enterprises a common language for third-party risk. “We built SecurityScorecard on a simple belief: companies should understand cyber risk with the same clarity they understand financial risk,” said Yampolskiy.
Today, AI is expanding what enterprises must trust: vendors, software, digital identities and now autonomous agents. As innovation accelerates and the attack surface expands, understanding and acting on that risk can no longer be periodic. It has to be continuous.
SecurityScorecard’s mission is growing to match: helping companies continuously understand, manage and act on risk across everything they must trust to run their business.
The opportunity is seismic. TITAN AI, SecurityScorecard’s Enterprise Third-Party Risk Management Platform for the AI era, pairs with MAX, its managed service for expert-led vendor assessment and remediation, to give customers ratings-grade clarity across every third party and AI they rely on.
Walker joins at a pivotal moment. “Sarah brings a rare combination of commercial leadership, operating depth and experience building businesses through major technology transitions,” said Yampolskiy. “She’s the right partner for this next chapter.” As President, Walker will lead SecurityScorecard’s global business spanning sales, marketing, implementation, customer success, support, and ecosystem partnerships as well as finance, M&A, people, legal and business operations.
SecurityScorecard’s next phase builds on strong momentum. The company serves thousands of organizations globally — including over 70% of the Fortune 100 — and is backed by Sequoia Capital, Google Ventures, Silver Lake Partners, Riverwood Capital and Evolution Equity Partners.
“SecurityScorecard created a category by changing how enterprises understand third-party cyber risk. What drew me here is the scale of the opportunity ahead,” said Walker. “AI is rapidly expanding the enterprise unit of trust and SecurityScorecard has the data, technology and market position to meet that challenge at scale. I’m thrilled to partner with Alex and the team to deliver the next chapter of durable growth for our customers.”
Walker brings deep experience building, scaling and transforming global businesses. Most recently, she served as Chief Operating Officer of Slack during a defining period for the business, helping drive sustained double-digit growth, bringing Slack’s AI products to market and helping lead the business through its integration following Salesforce’s $28 billion acquisition. Before that, she founded Salesforce’s Private Equity business and grew it from a three-person team into a multibillion-dollar global business. She began her career in emerging-markets private equity, then spent nearly a decade in corporate finance and commercial operations at General Electric.
About SecurityScorecard
SecurityScorecard is the global leader in threat-informed third-party risk management (TPRM), securing the world’s supply chains. Its platform combines security ratings, threat intelligence and third-party risk management, using continuous visibility and AI-accelerated workflows to help organizations reduce third-party risk before incidents occur and respond with confidence when they do. Trusted by 3,000 organizations, including over 70% of the Fortune 100, and recognized as a trusted resource by the U.S. Cybersecurity and Infrastructure Security Agency (CISA), SecurityScorecard delivers end-to-end supply chain cybersecurity that safeguards business continuity. Protect the supply chain behind your business. Learn more at securityscorecard.com.
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