Yinon Costica
About Yinon Costica
Yinon Costica is co-founder and Vice President of Product at Wiz, a cloud security company. Before Wiz he was VP of Product at Adallom, a cloud access security broker that Microsoft acquired in July 2015. He then spent about four years at Microsoft, where he led the cloud security product group. Wiz's author page says that group grew to a $1.5B revenue business.
Wiz's author page says Google announced its intent to acquire Wiz for $32 billion in March 2025. Costica studied physics, mathematics and computer science at the Hebrew University of Jerusalem. He holds a master's degree in computer networking from the Technion.
Costica's angel activity is concentrated in security startups, often alongside other Wiz founders. Press coverage of Linx Security's launch from stealth with $33M lists him and Wiz co-founder Assaf Rappaport among the angels in the round. StartupHub lists Aim Security and Linx Security in his portfolio. Crunchbase shows five portfolio companies for him. Most details of his personal investments are not public.
Costica was an angel in both seed rounds of AIR Security, an AI agent security company, according to the Lounge deals desk. Lounge lists a $40M seed in August 2026 and a $50M seed in September 2026. Press coverage says AIR came out of stealth in September 2026 with $50M across two seed rounds. Sequoia led a $10M round and Greenoaks led a $40M round. Other angels named in the coverage include Cognition's Zach Frankel and former White House cyber official Anne Neuberger.
AIR was founded by Yair Saban and Niv Hoffman. It builds a platform that discovers AI agents and vets the skills and add-ons they use. Aim Security, also in his portfolio, is a security company, though the sources reviewed do not describe it in detail.
The public record shows investments in cybersecurity and AI security, mostly at seed and Series A, with Israeli teams prominent. He has not published a check size, a stated thesis or a fund. The sources reviewed contain no public statement from him on what he looks for in pitches.
- AIR Security: AI agent security platform that vets the skills and add-ons agents use. Seed rounds in 2026 (August and September per Lounge deals desk).
- Linx Security: identity security platform from Tel Aviv. He was an angel in its $33M launch round, listed by StartupHub as January 2023.
- Aim Security: security startup listed in his StartupHub portfolio. The sources reviewed give no reliable round details.
- crunchbase.com/person/yinon-costica
- wiz.io/authors/yinon-costica
- productschool.com/product-leaders/yinon-costica
- startuphub.ai/investors/yinon-costica
- timesofisrael.com/backed-by-wiz-founders-tel-aviv-founded-startup-emer
- runtimewire.com/article/air-security-raises-50m-ai-agent-firewall
- thesaasnews.com/news/air-raises-50m-seed
- il.linkedin.com/posts/yinonc_an-exclusive-interview-with-the-ciso-of-a
Investing activity
Yinon Costica appears in 2 AI deals tracked by the Lounge deals desk, rounds totalling $90M. The rounds are mostly Seed, with a median round size of $50M. The most recent are AIR (Seed, $50M, Sep 2026) and AIR Security (Seed, $40M, Aug 2026).
Yinon Costica most often invests alongside Anne Neuberger, Omer Adam, Netz Capital and Varun Anand, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Yinon Costica
Who is Yinon Costica?
He is a co-founder and VP of Product at Wiz, the cloud security company. Earlier he was VP of Product at Adallom and then led cloud security product at Microsoft.
Has Yinon Costica invested in AI startups?
Yes. He was an angel in AIR Security, which builds security for AI agents. Lounge lists a $40M seed in August 2026 and a $50M seed in September 2026.
What is Yinon Costica's angel check size?
No check size is public. Press reports name him as an angel in rounds but do not give his amounts.
What stage and sectors does Yinon Costica back?
His known angel investments are in security startups at seed and Series A stages. They include AIR Security, Linx Security and Aim Security.
Which investors have backed startups alongside Yinon Costica?
In AIR Security he joined Sequoia, Greenoaks, Swish Ventures, Netz and other angels. In Linx Security he invested alongside Cyberstarts and Assaf Rappaport.
Is Yinon Costica an angel investor?
Yes. Yinon Costica invests personally as an angel.
What AI companies has Yinon Costica invested in?
Yinon Costica's AI investments include AIR and AIR Security. The 2 rounds on Lounge are listed on this page with amounts, dates and co-investors.
What stage does Yinon Costica invest at?
In the rounds tracked on Lounge, Yinon Costica has invested at Seed, with a median round of $50M.
Who does Yinon Costica co-invest with?
Yinon Costica's most frequent co-investors on Lounge are Anne Neuberger (2 deals), Omer Adam (2 deals), Netz Capital (2 deals), Varun Anand (2 deals) and Ofir Ehrlich (2 deals).
How can founders reach Yinon Costica?
Founders on Lounge can see Yinon Costica's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with them under Warm Paths, and add Yinon Costica to their Investor Pipeline to track the conversation.