Zscaler

Zscaler was founded in 2007 by Jay Chaudhry and K. Kailash. The company launched its cybersecurity platform in 2008. In August 2012, Zscaler secured $38 million in funding from investors. The company's second funding round, led by TPG Capital, raised $100 million in August 2015. In March 2018, the company had an initial public offering (IPO) in which it raised $192 million. The company is traded on the Nasdaq using the symbol ZS. Zscaler stock was added to the Nasdaq-100 index on December 17, 2021.

Zscaler acquired the AI and machine-learning technology of TrustPath in August 2018; the browser security company Appsulate for $13 million in May 2019; cloud security posture management startup Cloudneeti in April 2020; and microsegmentation firm Edgewise Networks in May 2020. The company purchased cybersecurity startup Trustdome in April 2021; Indian cybersecurity startup Smokescreen Technologies in May 2021; and cloud security firm ShiftRight for $25.6 million in September 2022.

On February 14, 2023, Zscaler announced it would acquire Israeli application security company Canonic, a company focused on protecting against attacks that target software as a service. In March 2024, the company acquired Israel-based data security startup Avalor, which uses AI to analyze data in search of identifying security vulnerabilities, for $310 million; and network segmentation startup Airgap Network, for an undisclosed amount.

On May 17, 2025, Zscaler announced it would acquire Red Canary for an undisclosed amount. Red Canary is a US based provider of Managed Detection and Response services. In February 2026, the company announced it the acquisition of browser security company SquareX for an undisclosed amount.