
After years of breaking into clouds and cleaning up vulnerability queues, Alex Chantavy turned one stubborn idea into SubImage: defenders deserve a map, not another list.
SubImage is a San Francisco security startup building an open-core security graph that maps a company's cloud and SaaS infrastructure so teams can see who can access what, and why. Built by the original team behind Cartography, the open-source graph tool created at Lyft and now a CNCF project, SubImage sells a managed, agentless platform for attack path analysis, asset inventory, and misconfiguration detection. Backed by a $4.2M seed round, it positions itself as an open-core alternative to Wiz.