2026 – present
Zscaler
Zero trust at cloud scale - the company that bet the perimeter would dissolve, and built the exchange that replaced it.
Zscaler enters this record carrying the thesis every earlier chapter kept testing: that the perimeter those firewalls and load balancers defended would dissolve, and that inspection would move into a cloud sitting between every user and every application. The Zero Trust Exchange is that bet built at planetary scale - one of the largest security clouds running - and its platform is now part of the curriculum this record teaches.
Why Zscaler, why now
Two decades of this record run through firewalls, load balancers, and the perimeters they defended; Zscaler is the company that bet earliest that the perimeter would dissolve into a global inspection cloud. Studying the Zero Trust Exchange, ZIA, and ZPA architectures is the natural continuation of the SSE work already underway in the Netskope chapter, from the other side of the same market.
Reading the TLS surface
The JA4 and JA3 decoders on this site read the same TLS surface the Zero Trust Exchange inspects at scale: the handshake a client offers before any policy fires, and everything it reveals. It is a natural pairing - a cloud that terminates and inspects the world's TLS, and a toolbox that teaches what those handshakes say - with more of that tooling to follow.
What it certified
Platform certifications will be recorded on the credentials page as they land.
The company was founded in 2007. This page covers only the years worked with it.