Context.dev
We give AI agents realtime web context via API
Featured Startups
Each quarter we pick a handful of young security companies from the latest Y Combinator batches and show them on the CISO AI homepage, next to our own tools. They are our picks, chosen for what they do for security teams, and not paid placements. Every startup we have featured stays listed here.
Featured now: Q4 2026
Akon Labs
Databricks for Enterprise Codebases
OpenHack
Always-on AI security engineer
Trident
Autonomous offensive security agents. The best defense is offense
Palisade
AI that finds and fixes OS-level vulnerabilities across device fleets
Tolmo
Tolmo is the AI security platform that secures every layer of cloud…
Traceforce
CrowdStrike for AI Agents
GrayPass
Verify that the expected person is in control before key actions.
DeepMark
A live watermark inside AI voice that survives phone calls
NebuSec
Autonomous AI defense system for cyber attack
Fabraix
The world's frontier hacker of AI agents.
Y Combinator Fall (Q4) 2025
Metorial
Agentic infrastructure to power AI-native companies.
Antigen
Continuous offensive security for the enterprise.
Veria Labs
Continuous AI pentesting that finds and fixes vulnerabilities
Multifactor
Zero-trust authentication, authorization, and auditing for AI agents
LogosGuard
The sensitive data redaction layer for AI
ComplyDo
Global Compliance for Enterprises
Y Combinator Winter (Q1) 2026
BeeSafe AI
Frontier AI Defenses for Social Engineering Attacks
Parameter
AI agents that run continuous penetration tests against your apps and infrastructure
Salus
Guardrails to validate your agent's actions before they execute
Didit
Infrastructure for identity and fraud.
Crosslayer Labs
Protect, monitor and defend your Internet presence
Agentic Fabriq
The control plane for AI agents.
Y Combinator Spring (Q2) 2026
Clawvisor
The Authorization Layer for AI Agents
RASPIRE
Autonomous Runtime Security
Silmaril
Security for agents that self-improves
Inth
Monitor and fix product privacy issues before they block growth
Y Combinator Summer (Q3) 2026
Caution
Hosting platform for software you can't afford to have hacked
Verdict Machine
AI cybersecurity for financial institutions' digital assets
Decawork
Training company-specific models that approve AI actions.
Y Combinator Fall (Q4) 2026
Maritime
Gives each AI agent its own isolated computer, Linux, Windows or Android, with its own kernel. An agent that goes wrong is contained to one machine, every session is auditable, and a human can take over at any time.
Also featured
Earthly
Guardrails for the AI era: turn your AGENTS.md, engineering standards and process docs into deterministic enforcement in AI authoring loops and on PRs.
antiburn
Stop hitting your token limits: antiburn watches your coding-agent sessions and shows you exactly where the tokens go, and what to turn off. Tiny, fast, free, local and open source.
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