Best Cybersecurity & Digital Defense in San Jose
3 cybersecurity firms serving the San Jose, California area, ranked by tier and rating.
- Verified providers
- 3 verified / 3 listed
- Last updated
- Last updated September 2026
Ranked listings
Top Cybersecurity & Digital Defense in San Jose, CA
Ranked by tier and rating. Every listing is human vetted before it appears here.
How we rank
Providers are hand-vetted by our editorial team based on verified client history, domain authority, and AI footprint. Rankings within San Jose are then ordered by tier, verification status, rating, and review count — never by pay-to-rank.
Zscaler
Zscaler is a cloud security company founded in 2007 by co-founder Jay Chaudhry and built around the Zero Trust Exchange. The company provides cloud-delivered security for internet access, private applications, data, endpoints, branches, IoT and operational technology. Its current platform includes Zero Trust SASE, secure internet and private access, digital experience monitoring, zero trust firewall, cloud sandbox and browser security. Zscaler also offers AI security services covering AI asset management, AI access security, AI red teaming and AI guardrails. Its security operations portfolio includes threat exposure management, unified vulnerability management, threat hunting and managed detection and response. Jay Chaudhry has served as President, CEO and Chairman since 2007. Zscaler's public investor materials identify him as a co-founder and security industry entrepreneur. The company's platform is delivered through a global cloud architecture rather than traditional on-premises security appliances.
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Zscaler
Zscaler is the worlds largest cloud security company and the pioneer of zero trust architecture, operating the Zero Trust Exchange platform that processes over 400 billion daily transactions for 40% of Fortune 500 companies. The NASDAQ-listed company replaces traditional firewalls and VPNs with cloud-native, identity-based access controls.
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Securiti
Securiti provides a unified data controls platform using AI to automate privacy, security, governance, and compliance across multi-cloud environments with 70+ out-of-box regulatory templates.
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Frequently asked
About Cybersecurity & Digital Defense in San Jose
What is the top-rated Cybersecurity & Digital Defense in San Jose?
Zscaler currently holds the #1 rank on DirJournal's Cybersecurity & Digital Defense listing for San Jose, California. Rankings are recalculated as providers earn verification, publish pricing tiers, and accumulate reviews. See the ranked grid above for the full top 3.
How much do cybersecurity firms typically cost in San Jose?
Most cybersecurity firms publish pricing tiers on their DirJournal profile. Click any provider above to see their tiers, starting rate, and typical engagement size. Where pricing isn't listed, request a quote directly through the provider's contact link.
How does DirJournal rank cybersecurity firms for San Jose?
Providers are hand-vetted by our editorial team, then ranked by verification status, tier, rating, and review count. Only published listings appear. Location matching for the San Jose page runs city-first, expanding to statewide (California) or nationwide only when local coverage is thin — this is clearly disclosed on the page when it happens.
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