Top Security Companies by Revenue 2026

Microsoft's cloud-native SIEM/SOAR platform with AI-powered threat detection and Copilot integration; part of Microsoft's $20B+ security business competing with Splunk/Cisco and IBM QRadar.

Mar 2024: Acquired by Cisco for $28B; integrated into Cisco's AI-driven security portfolio; 90 of Fortune 100 use Splunk

NASDAQ-listed (OKTA) independent identity platform with 19K+ customers at $2.26B revenue; Workforce Identity Cloud and Auth0 competing with Microsoft Entra for enterprise and developer IAM.

San Jose zero trust security (NASDAQ: ZS) surpassing $3B ARR FY2025; 500B+ daily transactions across 160+ data centers for 8,650+ enterprises and 35% Forbes Global 2000 competing with Palo Alto Prisma for enterprise zero trust.

AI-powered endpoint security with $800M revenue; autonomous threat response and rollback on the Singularity Platform competing with CrowdStrike after CrowdStrike's 2024 global outage.

$1.001B revenue 2024 (record); Q2 2025 $328M (+46% YoY); $1.274B ARR Q2 2025 (+47% YoY); 10,000+ clients; $221M free cash flow 2024 (22% margin); acquired Zilla adding 125 customers; IAM market $15.93B 2022 to $41.52B 2030

Leading compliance automation platform with $1.6B valuation; continuous control monitoring for SOC 2 and ISO 27001 serving thousands of SaaS companies competing with Drata and Sprinto.

Managed SOC platform with $4.3B valuation; 24/7 Concierge Security Team monitoring thousands of mid-market clients competing with CrowdStrike Falcon Complete and Rapid7 MDR.

Cloud security platform with behavioral anomaly detection for multi-cloud environments; acquired by Fortinet (FTNT) in October 2024 after $1.9B raised competing with Wiz and Palo Alto Prisma Cloud.

Santa Clara SSE/SASE pioneer (NASDAQ: NTSK, IPO Sep 2025 at $7.26B) with NewEdge 70+ data center network; $1.44B pre-IPO funding serving 2,400+ customers (30+ Fortune 100) competing with Zscaler for enterprise cloud security.

Consumer cybersecurity brand providing antivirus, VPN, and identity protection; McAfee+ emphasizes dark web monitoring and identity theft recovery services.

Consumer cybersecurity brand under Gen Digital with 500M users; Norton 360, LifeLock identity theft protection, and Avast portfolio serving global device and identity security.

Microsoft's enterprise endpoint protection platform included in Microsoft 365 E5; benefiting from CrowdStrike's 2024 outage while AI-powered Copilot for Security integrates with Microsoft's $20B+ security business.

Gen Digital (NASDAQ: GEN) consumer cybersecurity brand with free antivirus for hundreds of millions of users; Avast acquisition combined with Norton forming Gen Digital competing with Microsoft Defender and Bitdefender.

Gen Digital (NASDAQ: GEN) consumer cybersecurity brand with 435M+ users at $3.8B revenue after $8.6B Norton merger; freemium model competing with Bitdefender and McAfee for consumer antivirus and privacy protection.

Israel YC W20 open source vulnerability patching without version upgrades or breaking changes; $20M from MORE Investment House/SBI/PayPal Alumni Fund fixing CVEs for Linux/containers/dependencies competing with Snyk and Mend for production-safe security remediation.

Paris cybersecurity employee risk monitoring at $10M+ ARR 2024 (triple-digit growth) serving Mistral AI, Deel, Intercom, Y Combinator; $45M total ($30M Left Lane Series B Feb 2025 at $170M val) with AI coach Albert competing with KnowBe4 for human risk management.

DC AI email security with ASA/ADÉ autonomous agents driving 100% ARR growth H1 2025; $240M+ total ($150M Georgian Series C Nov 2025) serving Spotify/Snowflake/Anduril with detection-as-code competing with Abnormal Security for enterprise email threats.

SF YC S23 agentic identity platform delivering Okta-level SSO for any app without SAML or SSO tax; $3.5M seed competing with Okta and Microsoft Entra for enterprise IAM with AI-agent authentication for 100% of applications including non-SAML tools.

US DevSecOps AI writing code fixes for Snyk/Semgrep vulnerabilities at 80% faster remediation and 30% less false positives; YC S23 $2.6M Shorooq/Jawed Karim seed Jan 2025 IDC Innovator competing with Snyk and Mobb.ai for AppSec auto-remediation.

SF YC S23 AI trust and safety automation for Patreon, Eventbrite, Upwork, Character.ai; $27.5M total ($27M First Round/Ribbit Series A Apr 2025) replacing manual risk reviews with AI agents for $10B+ marketplace and $100B+ payments platforms.

SF YC a16z-backed government data request compliance platform at $6M revenue 2024 with 39 employees; $33.3M total ($10M a16z seed Nov 2023) serving 15K+ agencies in 120+ countries automating subpoena and law enforcement compliance workflows.

SF OT/IoT cybersecurity Gartner 2025 CPS Leader acquired by Mitsubishi Electric for $883M Sep 2025 (largest OT security deal); 115M+ assets at 12,000+ installations competing with Claroty and Dragos for critical infrastructure ICS security.

SF Sequoia India-backed unified DevSecOps platform (SAST/SCA/coverage/formatting) trusted by 6,000+ companies; launched Globstar open-source toolkit and 3 AI agents in 2025 for AI-generated code security competing with Snyk and Semgrep.

Seoul enterprise Zero Trust data access governance at 130+ enterprises including Kakao/Shinhan/Toss/HYBE/Yanolja; $30M+ total with Japan strategic investment 2024 covering databases/servers/K8s/AI infrastructure competing with CyberArk.

SF CNAPP with runtime intelligence for 90% false positive reduction; $180M total ($100M Craft Ventures/TCV Series A Dec 2024 at $900M valuation) serving 200+ enterprises including Peloton and Bill competing with Wiz for cloud security.

SF YC W24 open-source SOAR security automation deployed by 200+ orgs (Fortune 500 + federal); $500K-$2M seed on Temporal's durable execution with 100+ integrations competing with Splunk SOAR and Tines for security incident response.

AI-native mobile testing from Uber DragonCrawl founder (saved $25M/4 months); YC Fall 2024 with $1.6M Panache/Feld pre-seed using AI agents for iOS/Android/web tests competing with Browserstack for semantic mobile QA automation.

SF cyber risk analytics for insurance industry spun from Symantec 2018; $100M+ funding with AI catastrophe models serving 100+ global insurers/reinsurers competing with RMS and Verisk AIR for cyber underwriting quantification.

Palo Alto AI merchant risk platform automating underwriting and fraud monitoring for 150K+ SMBs with 5x faster onboarding; YC $4.2M Lux Capital/Exponent-backed serving GoFundMe and Kajabi for payment processor risk management.

San Francisco AI email security (private, $5.1B valuation); $250M Series D (Wellington Management), behavioral AI detects novel BEC/phishing in Microsoft 365/Google Workspace competing with Proofpoint and Microsoft Defender.

SF AI security questionnaire automation serving Adobe, Deel, and Rippling with responses in minutes vs. weeks; YC W20 $1M competing with Vanta and Responsive.io for B2B SaaS vendor security questionnaire and DDQ automation.

SF bootstrapped GenAI device management and SOC2/HIPAA compliance at $4.7M revenue 2024 (+213% YoY); 31-person team with $0-$1.6M funding competing with Jamf and Kandji for SMB AI-powered MDM and compliance automation.

Seattle software supply chain security (founded 2021); $892M+ raised, $3.5B valuation (Apr 2025), $40M ARR growing 640% YoY with zero-CVE container images for ANZ Bank/Canva/GitLab competing with Snyk for DevSecOps.

Open-source password manager with $100M PSG Series C and 2025 Cybersecurity Breakthrough Award; self-hosted deployment option competing with 1Password and LastPass after post-breach migration accelerated growth.

NYC AI-native OSINT threat intelligence combining automated agents with human experts for cyber and fraud teams; $8M from PruVen Capital and YC S22 competing with ZeroFox for enterprise digital risk protection.

NYC enterprise AI security platform with permission-aware data access controls and audit logging; Palantir alumni YC W23-backed at $5.3M serving MongoDB and US Federal Government for compliant AI deployment.

San Francisco/Tel Aviv non-human identity security (private, $85M raised); $45M Series B Menlo/Anthology (Anthropic), API key/OAuth/AI agent credential governance competing with CyberArk and HashiCorp Vault.

Canadian cybersecurity for critical infrastructure using side-channel hardware monitoring; $2.43M NCC-funded with December 2024 Canadian Government contract competing with Dragos and Claroty for OT security.

Crypto Travel Rule compliance platform connecting 165+ VASPs globally for KYC data sharing across 80+ jurisdictions; $27.1M with DRW Trading Series B processing $500B+ transactions preventing $1B+ high-risk.

Open-source authentication platform with self-hosted and managed options; YC W20-backed competing with Auth0 and Clerk on developer data ownership and zero per-user pricing for email, social, and MFA login.

Instant business KYB verification delivering 250+ data points for fintech onboarding automation; $2.9M from Flourish Ventures and YC competing with Middesk for financial institution business verification.

Vancouver client-side website security for PCI DSS 4.0.1, CCPA, and HIPAA compliance; $14M Series A, $5M revenue with 300% growth as March 2025 payment page compliance deadline drives enterprise buying.

Global KYC/KYB platform reducing verification from weeks to minutes across 80+ registries in 150+ countries; $12.5M Series A from Headline, YC S22-backed serving Bridge (Stripe) and Meta at $5.9M ARR.

Multifactor is a security platform that modernizes enterprise multi-factor authentication with phishing-resistant methods, biometrics, and passwordless login across cloud and on-premise environments.

US open-source B2B authentication platform for SAML and SCIM enterprise SSO; YC $3.3M seed May 2025 from Paul Graham backing competing with WorkOS for SaaS company enterprise identity infrastructure.

Nordic KYB/KYC identity verification fintech connecting to BankID and European digital ID systems for financial services; €4M seed from Unusual Ventures and Mastercard Lighthouse with YC W20 backing.