Ksenia Lesko
Founder of Caution, Hosting platform for software you don't want to get hacked
Company
Ksenia Lesko is listed as a founder of 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.
Founder traction evidence
Public posts and activity attributed directly to this founder.
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Mid-June we packed up and flew to San Francisco.
Mid-June we packed up and flew to San Francisco. Today, Caution launches publicly with Y Combinator. We're building the platform that removes blind trust from infrastructure: proof, not promises, about what's actually running in production. Proud of this team beyond words 🧡
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Left my comfortable enterprise SaaS job to build this.
Left my comfortable enterprise SaaS job to build this. Zero regrets 🧡
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When you hear your own doubt in someone else’s mouth, it doesn’t become more true.
When you hear your own doubt in someone else’s mouth, it doesn’t become more true.
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Wow @OrikataCasey what’s your secret?? 👏🏼
Wow @OrikataCasey what’s your secret?? 👏🏼
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nobody wants confidential compute.
nobody wants confidential compute. they want to stop worrying about getting breached. my pitch used to be “verifiable confidential compute platform.” now it’s “we host software you can’t afford to get hacked.” both true. yet, completely different conversations.
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i have a theory: the app someone picks when you swap contact info says something about them → signal: you have a threat model → whatsapp: you’ve made peace with the metadata → linkedin: you have a networking KPI still figuring out Telegram
i have a theory: the app someone picks when you swap contact info says something about them → signal: you have a threat model → whatsapp: you’ve made peace with the metadata → linkedin: you have a networking KPI still figuring out Telegram
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took me too many pitches to learn the thing everyone already knows: talk about the customer’s problem, not your tech.
took me too many pitches to learn the thing everyone already knows: talk about the customer’s problem, not your tech.