Caution
YC S26 · Active · Hosting platform for software you can't afford to have hacked
Competitors
| Company | Category | Status | Program |
|---|---|---|---|
 CakeworkShared: cloud computing, infrastructure, hostingInactiveDevtools | Devtools | Inactive | YCW23 |
 TinfoilShared: confidential computing, confidential compute, cloud computingActiveAI, Devtools | AI, Devtools | Active | YCX25 |
 MaritimeShared: cloud computing, infrastructure, hostingActiveAI, Devtools | AI, Devtools | Active | YCF26 |
 Thunder ComputeShared: cloud computing, infrastructure, computeActiveAI, Data, Devtools | AI, Data, Devtools | Active | YCS24 |
 Fly.ioShared: developer deploy, infrastructureActiveDevtools | Devtools | Active | YCW20 |
Adjacent
| Company | Category | Status | Program |
|---|---|---|---|
 AppHarborShared: lets developer, cloud computing, configurationInactiveDevtools | Devtools | Inactive | YCW11 |
 BeamShared: cloud computing, infrastructureActiveAI, Devtools | AI, Devtools | Active | YCW22 |
 UbicloudShared: cloud computing, infrastructure, computeActiveAI, Data, Devtools | AI, Data, Devtools | Active | YCW24 |
 RyvnShared: infrastructure, workload, secureActiveDevtools | Devtools | Active | YCF24 |
 CelestShared: cloud computing, infrastructure, developerInactiveDevtools | Devtools | Inactive | YCW24 |
Also from S26 in AI
All of S26| Company | Category | Status |
|---|---|---|
 ArchalAPI sandboxes, built for AI agentsActiveAI, Devtools | AI, Devtools | Active |
 ClickResearch services for ChatGPT and ClaudeActiveAI, Data, Devtools | AI, Data, Devtools | Active |
 ComputableDerivatives Exchange for ComputeActiveAI, Devtools | AI, Devtools | Active |
 DecaworkTraining company-specific models that approve AI actions.ActiveAI, Devtools | AI, Devtools | Active |
 Experiential LabsOpen source AI gateway that turns your traffic into better modelsActiveAI, Devtools | AI, Devtools | Active |
 FabraixThe world's frontier hacker of AI agents.ActiveAI | AI | Active |
Founders
- Anton LivajaFounder/CEO
- Ksenia LeskoFounder
- Lance VickFounder/CTO
About Caution
Caution is a hosting platform for software you can't afford to get hacked. It simplifies and extends confidential compute, and lets developers deploy workloads to secure enclaves in minutes and give customers, auditors, and counterparties cryptographic proof that production is running the exact reviewed source code, build, configuration, and runtime - not an opaque binary controlled by a cloud operator or internal admin. Confidential computing hardware exists, but the tooling is too fragmented and incomplete for most teams to use well. Today, attestation often proves only that a binary has a certain hash; it does not prove what source code produced that binary. Building the missing deployment, reproducibility, and verification layer requires specialized security engineering and often locks teams into one cloud or hardware stack. Caution turns that into a simple git-based workflow that builds reproducible enclave images, provisions infrastructure, and lets anyone independently verify what is running. We built Caution after years securing high-risk systems through Distrust, where we worked with hedge funds, custodians, blockchain teams, cloud platforms, and critical grid operators on systems responsible for more than $600B in assets. Again and again, the same problem showed up: teams running mission-critical infrastructure could not reliably prove what was executing in production. As AI, fintech, healthcare, and regulated data collaboration move into the cloud, "trust us" is no longer enough. Caution is a general-purpose platform: if it runs on a server, it can run verifiably on Caution. We're starting where trust failures cost the most, but we believe verifiable compute will become the default way software runs, the same way HTTPS became the default way it's served. Infrastructure you can verify, not trust.
- YC batch
- S26 · Summer 2026
- Status, per YC
- Active
- Category
- AI, Developer tools
- Team size
- 5
- Location
- George Town, George Town, Cayman Islands
- Founded
- 2025
- Checked
- 4h ago
YC tags: Cybersecurity, Cloud Computing, Infrastructure
Caution: questions
Which YC batch was Caution in?
Caution was in Y Combinator's Summer 2026 batch (S26).
Is Caution still active?
Y Combinator lists Caution as active.
Who founded Caution?
Caution's founders, as listed on its YC page: Anton Livaja (Founder/CEO), Ksenia Lesko (Founder), Lance Vick (Founder/CTO).
Where is Caution based?
Caution lists George Town, George Town, Cayman Islands as its location on YC's directory.
Sources: each program's public company list, read twice a week. Not affiliated with Y Combinator or any other program. Logos via logo.dev; trademarks belong to their owners.