Zscaler

Zscaler was founded in 2007 by Jay Chaudhry on the argument that if applications and users have both left the office, the security stack should leave too. It built a global network of data centres through which customer traffic is routed, inspected and forwarded — the Zero Trust Exchange — and sells access to that network instead of appliances. It is listed on Nasdaq and is one of the largest security companies by market value. Zscaler Zero Trust Firewall, the product here, is the firewalling layer of that service: policy applied to all ports and protocols as traffic passes through Zscaler's network, with Zscaler Internet Access and Zscaler Private Access covering web traffic and application access. Nothing it sells runs on an endpoint as a scanner, so the malware detection cycles in this index do not measure it. What it competes against is the other cloud-delivered platforms and the appliance firewalls it was designed to replace.

Country

🇺🇸United States

Headquarters

🇺🇸San Jose, United States

Year Established

2007

Employees

8,700

Customers

11K organisations (2026)Vendor states: Zscaler — Company

Users

40M users (2026)Vendor states: Zscaler Zero Trust Exchange™ Extends Cybersecurity Market Leadership by Surpassing Half a Trillion Daily Transactions

Revenue

$3.4B (2026)Source: Zscaler, Inc. (GlobeNewswire)

Website

https://www.zscaler.com

Status

Active