Zscaler

Zscaler is a United States cybersecurity company headquartered in San Jose, California. Its business is built around delivering security from the cloud rather than relying primarily on security appliances deployed inside corporate data centers. The company provides services intended to protect users, applications, devices, networks, and enterprise data as organizations adopt cloud computing, mobile work, distributed offices, and direct internet access. Founded in 2007 by Jay Chaudhry and K. Kailash, Zscaler launched its cybersecurity platform in 2008. Its approach has centered on inspecting and controlling traffic through a globally distributed cloud security service. This model supports functions traditionally associated with secure web gateways, including protection against malicious websites and cyberthreats, policy enforcement, and visibility into internet use. It also extends to private application access, cloud application security, data protection, digital experience monitoring, and zero-trust connectivity. Two of the company’s best-known offerings are Zscaler Internet Access, generally used to secure access to the public internet and cloud applications, and Zscaler Private Access, which provides identity- and policy-based access to private applications without exposing those applications directly to the public internet. Together with related services, these products form part of the company’s broader security service edge and zero-trust strategy. Zscaler has expanded through both internal product development and acquisitions. Acquired technologies and companies have added capabilities in artificial intelligence and machine learning, browser security, cloud security posture management, network microsegmentation, SaaS application protection, security operations, data security, and application security. The company announced its Zero Trust Exchange platform in 2023 as a broader architecture combining cyberthreat protection, data protection, zero-trust connectivity, and business analytics. In 2024, it announced Zscaler Zero Trust SASE, positioning the platform as a single-vendor secure access service edge offering built on its security service edge technology. The company became publicly traded on Nasdaq in March 2018 under the symbol ZS, raising $192 million in its initial public offering according to the company’s Wikipedia account. Zscaler was later added to the Nasdaq-100 index in December 2021. Its customers and target markets include enterprises and other large organizations operating across multiple locations, cloud environments, and user populations. Zscaler remains active in the global cybersecurity market, where its positioning emphasizes cloud delivery, zero-trust principles, consolidated security controls, and the replacement or reduction of legacy perimeter-based network architectures.

Zscaler was established in 2007 by Jay Chaudhry and K. Kailash. The company was formed during a period when enterprise computing was moving away from applications and infrastructure located exclusively inside corporate data centers. Its central proposition was to provide security functions as a cloud service, allowing organizations to route and inspect traffic through a distributed security platform rather than backhauling all traffic to a private data center or deploying security appliances at every location. The company launched its cybersecurity platform in 2008. Its early and continuing product direction focused on secure internet access, web traffic inspection, policy enforcement, and protection against online threats. As enterprise use of software-as-a-service applications, mobile devices, public cloud infrastructure, and remote work increased, Zscaler broadened its platform to cover both public internet access and private enterprise applications. Zscaler’s principal product families include Zscaler Internet Access and Zscaler Private Access. ZIA is designed to secure users and offices connecting to the internet and cloud applications. ZPA applies zero-trust access controls to private applications, basing access on identity and policy rather than placing users on a broad network or exposing applications directly. These services became part of a wider security service edge model that converges network-access and security controls in a cloud-delivered architecture. The company raised $38 million in August 2012. A further funding round led by TPG Capital raised a reported $100 million in August 2015. Zscaler went public on Nasdaq in March 2018, raising $192 million in its initial public offering under the ticker ZS. Later in 2018, it acquired the artificial-intelligence and machine-learning technology of TrustPath. It acquired browser security company Appsulate in 2019 and expanded into cloud security posture management and network microsegmentation through its 2020 acquisitions of Cloudneeti and Edgewise Networks. Zscaler continued its capability expansion in 2021 by acquiring Trustdome and Indian cybersecurity startup Smokescreen Technologies. In December of that year, its stock was added to the Nasdaq-100 index. The company acquired ShiftRight in 2022 and announced the acquisition of Canonic in 2023. These transactions reflected an effort to extend the platform beyond web gateways and remote access into application security, SaaS security, cloud security, and broader security operations. At the June 2023 Zenith Live event, Zscaler announced the Zero Trust Exchange. The platform was described as combining cyberthreat protection, data protection, zero-trust connectivity, and business analytics. In January 2024, the company announced Zscaler Zero Trust SASE, its first single-vendor SASE offering, built on its AI-powered security service edge platform. The offering was intended to connect users, locations, and cloud services through the Zero Trust Exchange while combining security and access functions. In 2024, Zscaler acquired Avalor, an Israeli data security startup using artificial intelligence to analyze security data and identify vulnerabilities, for a reported $310 million. It also acquired Airgap Network, a network segmentation company, for an undisclosed amount. In 2025, Zscaler announced the planned acquisition of Red Canary, a United States managed detection and response provider. In 2026, it announced the acquisition of browser security company SquareX for an undisclosed amount. These transactions continued the company’s strategy of adding specialized technologies to a unified cloud security platform. Zscaler remains an active global cybersecurity company. Its historical development has followed the broader enterprise shift toward cloud applications, distributed workforces, direct internet access, and zero-trust network design. The company’s brand is associated with cloud-delivered security, secure access service edge, zero-trust connectivity, data protection, and the modernization of legacy perimeter-based network security.

1. 2024Zero Trust SASE announced

   The company announced a single-vendor SASE offering built on its security service edge platform.

   Source
2. 2023Zero Trust Exchange announced

   Zscaler announced a platform bringing together threat protection, data protection, zero-trust connectivity, and analytics.

   Source
3. 2021Nasdaq-100 inclusion

   Zscaler was added to the Nasdaq-100 index on December 17.

   Source
4. 2018Initial public offering

   Zscaler listed on Nasdaq under ZS and raised a reported $192 million in its IPO.

   Source
5. 2015TPG-led funding round

   A funding round led by TPG Capital raised a reported $100 million.

   Source
6. 2012Major funding round

   The company secured a reported $38 million in funding.

   Source
7. 2008Cybersecurity platform launches

   Zscaler launched its cloud-based cybersecurity platform.

   Source
8. 2007Zscaler is founded

   Jay Chaudhry and K. Kailash founded Zscaler as a cloud-focused cybersecurity company.

   Source

A cloud-native, zero-trust security platform intended to secure users, applications, data, locations, and cloud services without depending on a traditional network perimeter.

• Zscaler Internet AccessSecure web gateway and security service edge

  Zscaler Internet Access provides cloud-delivered protection for users and offices accessing the public internet and cloud applications. It is associated with secure web gateway functions, including traffic inspection, policy enforcement, threat protection, and visibility. The service is designed to reduce dependence on security appliances deployed at individual locations and to support organizations with distributed users and direct internet connectivity.

• Zscaler Private AccessZero-trust network access

  Zscaler Private Access provides identity- and policy-based access to private enterprise applications. Rather than placing an authenticated user broadly on a network, the service is designed to connect that user only to authorized applications. It is a central component of Zscaler’s zero-trust approach to remote access and application connectivity.

• Zscaler Zero Trust ExchangeZero-trust security platform2023

  The Zero Trust Exchange is Zscaler’s broader platform architecture for connecting users, applications, locations, and cloud services while applying security policy. Announced in 2023, it combines capabilities described by the company as cyberthreat protection, data protection, zero-trust connectivity, and business analytics.

• Zscaler Zero Trust SASESecure access service edge2024

  Zscaler Zero Trust SASE is the company’s single-vendor SASE offering announced in 2024. It is built on Zscaler’s security service edge technology and is intended to combine secure connectivity for users, locations, and cloud services with zero-trust access and cloud-delivered security controls.

• 2023Zenith Live Zero Trust Exchange announcement

  Global

  At its Zenith Live event, Zscaler presented the Zero Trust Exchange as a unified platform spanning threat protection, data protection, zero-trust connectivity, and business analytics.

  Outcome. The announcement broadened the company’s platform narrative beyond individual secure-access products.

  Source

• 2024Introduction of Zero Trust SASEProduct launch

  Organizations were seeking integrated secure access service edge products that combined networking and security capabilities.

  What changed. Zscaler announced its first single-vendor SASE offering, built on its AI-powered security service edge platform.

  Aftermath. The offering positioned Zscaler to address both secure connectivity and cloud-delivered security through the Zero Trust Exchange.

  Source
• 2023Launch of the Zero Trust Exchange platformProduct launch

  Enterprise security requirements were increasingly converging around cloud applications, distributed users, data protection, and zero-trust access.

  What changed. Zscaler announced the Zero Trust Exchange as a platform integrating several security and connectivity functions.

  Aftermath. The announcement established a broader platform framework for Zscaler’s product portfolio.

  Source
• 2018Public listing on NasdaqOther

  Zscaler sought public-market financing as its cloud security business expanded.

  What changed. The company completed an initial public offering and began trading under the symbol ZS.

  Aftermath. The offering raised a reported $192 million and made Zscaler a publicly traded company.

  Initial public offering proceeds. $192 million raised (March 2018)

  Source

• 2026Zscaler announces acquisition of SquareX

  Zscaler announced the acquisition of browser security company SquareX for an undisclosed amount.

  M&A
  Source
• 2025Zscaler announces acquisition of Red Canary

  Zscaler announced an agreement to acquire Red Canary, a United States provider of managed detection and response services, for an undisclosed amount.

  M&A
  Source
• 2024Zscaler acquires Avalor and Airgap Network

  Zscaler acquired Israeli data security startup Avalor for a reported $310 million and acquired network segmentation company Airgap Network for an undisclosed amount.

  M&A
  Source
• 2023Zscaler announces acquisition of Canonic

  The company announced the acquisition of Israeli application security company Canonic, which focused on protecting SaaS applications from targeted attacks.

  M&A
  Source
• 2023Zscaler introduces the Zero Trust Exchange

  At its Zenith Live event, Zscaler announced the Zero Trust Exchange as a platform combining threat protection, data protection, zero-trust connectivity, and business analytics.

  Product launch
  Source
• 2022Zscaler acquires ShiftRight

  Zscaler purchased cloud security firm ShiftRight in a transaction reported at $25.6 million.

  M&A
  Source
• 2021Zscaler acquires Trustdome and Smokescreen Technologies

  The company added Trustdome and Indian cybersecurity startup Smokescreen Technologies to its portfolio.

  M&A
  Source
• 2021Zscaler added to the Nasdaq-100 index

  Zscaler stock was added to the Nasdaq-100 index on December 17, 2021.

  Other
  Source
• 2020Zscaler expands through Cloudneeti and Edgewise Networks acquisitions

  Zscaler acquired Cloudneeti, a cloud security posture management startup, and Edgewise Networks, a network microsegmentation company.

  M&A
  Source
• 2019Zscaler acquires Appsulate

  The company acquired browser security company Appsulate in a transaction reported at $13 million.

  M&A
  Source
• 2018Zscaler completes initial public offering

  Zscaler became a Nasdaq-listed public company under the ticker ZS and raised $192 million in its initial public offering.

  Other
  Source
• 2018Zscaler adds TrustPath artificial-intelligence technology

  Zscaler acquired the artificial-intelligence and machine-learning technology of TrustPath to strengthen its security capabilities.

  M&A
  Source
• 2015TPG Capital leads Zscaler's $100 million funding round

  Zscaler completed a second major funding round led by TPG Capital, reported at $100 million.

  Other
  Source
• 2012Zscaler raises $38 million in funding

  The company secured a funding round reported at $38 million as it expanded its cloud-based cybersecurity business.

  Other
  Source

1. Zscaler
2. Zscaler company website
3. Zscaler leadership