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SubImage

YC W25

San Francisco, US · Founded 2024 · 4 employees · Hiring · 2 known investors

SubImage maps cloud, SaaS, and on-prem infrastructure into a single graph to show security teams what is exposed, misconfigured, and needs fixing first. It offers a managed CNAPP built on the open-source Cartography security graph, connecting via a read-only agentless API and integrating with SIEM, SOAR, and ticketing systems.

Cloud ComputingCybersecurityEnterprise SoftwareSaaSUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (W25)

SubImage was founded in 2024 by Alex Chantavy and Kunaal Sikka.

ACAlex Chantavy
Alex Chantavyin𝕏Co-founder & CEOPreviously, he was a staff engineer at Lyft where he developed an open source security graph tool, and a security engineer on Microsoft's Red Team focused on cloud security. He has also held positions in security and infrastructure roles at the NSA.
KSKunaal Sikka
Kunaal Sikkain𝕏Co-founder & PresidentHe previously worked as a Member of Technical Staff at Anthropic and as a Staff Engineer at Lyft, where he built security infrastructure including SIEM, insider threat detection, and vulnerability management systems. He holds a degree in computer science from the University of Washington.

Investors · 2

FundersClubSan Francisco · $250K – $5M
Y CombinatorSan Francisco · $500K

Funding

SEC filings, press & company announcements

$4.2M disclosed across 1 of 3 rounds · 2025

Source: company announcements and press reports — follow each round's link for the claim.

Images

SubImage photo

Competitors · 1

by search overlap
Hugging Face4 shared keywordsHugging Face is a collaboration platform that hosts and provides access to machine learning models, datasets, and applications. It offers both open-source tools for the ML community and paid compute and enterprise solutions for teams building AI applications.

Companies competing with SubImage for the same Google search keywords, organic and paid, via search-intersection analysis.

In the news

Top Startup and Tech Funding News – November 25, 2025 - Tech Startupstechstartups.com · Nov 2025SubImage Raises $4.2 Million in Seed Roundthesaasnews.com · Nov 2025SubImage: $4.2 Million Raised To Expand Open-Core Cloud Security Graph Platformpulse2.com · Nov 2025SubImage Raises $4.2M to Map the Cloud and Secure Everythingfinance.yahoo.com · Nov 2025Trysignalbasetrysignalbase.com · Oct 2025We've raised $4.2Msubimage.io · Oct 2025Launch HN: SubImage (YC W25) – See your infra from an attacker's perspective | Hacker Newsnews.ycombinator.com · Feb 2025SubImage: Software that maps your infrastructureycombinator.com · Feb 2025

Frequently asked questions

What does SubImage do?
SubImage maps cloud, SaaS, and on-prem infrastructure into a single graph to show security teams what is exposed, misconfigured, and needs fixing first. It offers a managed CNAPP built on the open-source Cartography security graph, connecting via a read-only agentless API and integrating with SIEM, SOAR, and ticketing systems.
Who founded SubImage?
SubImage was founded by Alex Chantavy, Kunaal Sikka in 2024.
Who are SubImage's investors?
SubImage's investors include FundersClub, Y Combinator.
How much funding has SubImage raised?
SubImage has disclosed $4.2M raised across 1 of its 3 known rounds.
Where is SubImage headquartered?
SubImage is headquartered in San Francisco, US.