Zscaler stock was flying high in 2021, along with most of the growth sector, until it became clear that inflation is more than transitory and that interest rate hikes are coming sooner than expected. Comparing Zscaler to other high-growth SaaS companies like CrowdStrike and Cloudflare (NYSE: NET) shows that the entire sector is highly valued by investors yet retreating quickly. The future of cybersecurity is in the cloud, and this is where Zscaler (NASDAQ: ZS) comes in.