SAN FRANCISCO, Nov. 17, 2025 (GLOBE NEWSWIRE) -- SubImage, the first company to bring an open-core cloud security graph to the enterprise, announced today it has raised $4.2M in seed funding from FundersClub, Y Combinator, Phosphor Capital, and Transpose Platform. The company will be using the funds to grow its engineering team, expand customer pilots, and ship features that shorten the time to fix security issues.

SubImage's co-founders, Alex Chantavy and Kunaal Sikka both worked on security teams across government, enterprises, and hypergrowth startups.

Chantavy began his career at the National Security Agency (NSA), later joining Microsoft's Red Team, where his job was to act like a real attacker and identify Microsoft's immediate fixes. "The most important tool was our internal cloud knowledge graph because it showed us a map of the easiest attack paths," said Chantavy. He later joined Lyft, where the team open-sourced those ideas as Cartography, which went on to influence a wave of graph-based security platforms. "One of the most effective ...