Fundraising Fox
/People
Sign in

Dean Sysman

InvestorFounder

Venture Advisor at Bessemer Venture Partners · Venture Advisor at AI Fund · Founder at Cymmetria · Founder at Axonius

Global

Writes $5K – $50K checks · typically $25K

FoundedAxoniusCymmetria · YC

Find your path to Dean

10,819 people in our graph can introduce you to Dean.

Each arrow is one introduction. Sign up to fill in the first one.

Ask Jahanvi Sardana to introduce you to Dean

You →Jahanvi · together at Axonius (2021–2023) →Dean

Ask Jamie Chen to introduce you to Dean

You →Jamie · 2 people · together at Axonius →Dean

Ask Sam Okafor to introduce you to Dean

You →Sam · 2 people · together at YC S15 →Dean

Sign up to find every way you can get introduced to Dean

  • Your email: the people you already email who know Dean
  • 2nd- and 3rd-degree connections: people you know who worked, studied or invested with Dean
  • Your LinkedIn: the connections who can make the intro for you

We rank every route by how warm it is, so you raise on warm intros instead of cold emails.

Sign up with GoogleAlready have an account? Log in

About

Dean Sysman is Executive Chair and Co-Founder of Axonius, a cybersecurity company that reached $2.6 billion valuation and $100 million ARR within five years of its founding, which he led as CEO for nine years. He conducts research at Columbia University at the intersection of systems and artificial intelligence, and serves on the boards of Olakai, Lasso Security, and SecurityScorecard, with an investment portfolio spanning over 20 early-stage companies including three unicorns. Sysman is a graduate of computer science from the Israeli special "Etgar" program and a former captain in the Israeli Intelligence Corps.

Founder at CymmetriaYC S15

Intro paths

YC

Dean went through Y Combinator (Summer 2015) — any YC alum in your network can reach them through the YC community.

→

In turn, Dean can intro founders to Cymmetria's investors below.

Cymmetria's investors · 14

408 VenturesPalo Alto · since 2015ACME CapitalSan Francisco · since 2015CapitoriaFelicis VenturesSan Francisco · $500K – $15M checks · since 2015Follow[the]Seedsince 2015Four CitiesNewton · since 2015IDrive VenturesInitial CapitalLondon · $25K – $5M checks · since 2015Lumia CapitalSan Francisco · $25K – $30M checks · since 2015Rally Ventures Management, LlcMenlo Park · $100K – $4M checks · since 2015S2 CapitalSan Francisco · since 2015SAP.iO Foundrysince 2015SeedcampLondon · $378K – $1.1M checks · since 2015Y CombinatorSan Francisco · $500K checks · since 2015

Co-founders at Cymmetria

GEGadi Evron
Gadi EvronFounder/CEO

Founder at Axonius

Intro paths

→

In turn, Dean can intro founders to Axonius's investors below.

Axonius's investors · 17

AccelPalo Alto · $1.6M – $70M checks · since 2024Accelmed PartnersMiamiALIVE Israel HealthTech FundSavyonAlkeon InnovationNew YorkAlphaDriveTel AvivBessemer Venture PartnersSan Francisco · $5M – $100M checksBlue Owl CapitalNew YorkEmerge VenturesTel Aviv · $2.5M – $31M checksHarmony PartnersNew YorkHidden Variable CoreNew York · since 2021ICONIQSan FranciscoLightspeed Venture PartnersMenlo Park · $1.7M – $87M checks · since 2022OpenView Venture PartnersBoston · $5M – $20M checksStripesNew York · since 2021Vertex Ventures IsraelTel Aviv-Yafo · $3.5M – $100M checksWestern Technology InvestmentPortola Valley · $250K – $30M checksYL VenturesSilicon Valley · $100K – $5M checks · since 2019

Co-founders at Axonius

OS
Ofri ShurExecutive Officer, Director

Experience

  1. AxoniusExec Chair and Co-Foundercurrent2026 — presentNew York, New York, United States
  2. AxoniusCEO and Co-Founder2017 — 2026New York City Metropolitan Area
  3. Columbia UniversityPhD Researchcurrent2026 — presentNew York, New York, United States
  4. SecurityScorecardBoard Membercurrent2026 — present
  5. LassoBoard Membercurrent2026 — present
  6. Bessemer Venture PartnersVenture Advisercurrent2026 — present
  7. OlakaiBoard Membercurrent2024 — present
  8. StartupsInvestorcurrent2016 — present
  9. CymmetriaCTO and Co-Founder2014 — 2017Tel Aviv/San Francisco
  10. Israeli Military Intelligence - Unit 8200Research Team Leader2012 — 2014
  11. Israeli Military Intelligence - Unit 8200Technological Researcher2009 — 2012
  12. Integrity Project (acquired by Mellanox Technologies)Software Developer2012Ramat Gan, Israel

Skills & more

C++C

From Dean's professional profile.

Investments

Per curated public sources.

Colleagues at Bessemer Venture Partners

Abe Gong
Operating Advisor at Bessemer Venture Partners
Abhijith Sreedevi
Senior Tax Associate at Bessemer Venture Partners
Adam Fisher
Partner at Bessemer Venture Partners
Adam FitzGerald
Operating Advisor at Bessemer Venture Partners
Adrienne Gonzales
Senior Executive Assistant at Bessemer Venture Partners
Adva Shisgal
Business Development Senior Manager at Bessemer Venture Partners
Akshat Gupta
Operating Advisor at Bessemer Venture Partners
Alec McNiff
Senior Manager, Solutions Architect at Bessemer Venture Partners

Network5

Guy PodjarnyScout
Angel
Mickey BoodaeiScout
Partner at Picture Capital
Tamar YehoshuaScout
Investor at IVP (Institutional Venture Partners)
Eran Bielski
Investor at Entree Capital
Peter Barrett
General Partner at Playground Global

Investors connected to Dean in public investor directories — a warm-intro map.

Frequently asked questions

Who is Dean Sysman?
Dean Sysman is Executive Chair and Co-Founder of Axonius, a cybersecurity company that reached $2.6 billion valuation and $100 million ARR within five years of its founding, which he led as CEO for nine years. He conducts research at Columbia University at the intersection of systems and artificial intelligence, and serves on the boards of Olakai, Lasso Security, and SecurityScorecard, with an investment portfolio spanning over 20 early-stage companies including three unicorns. Sysman is a graduate of computer science from the Israeli special "Etgar" program and a former captain in the Israeli Intelligence Corps.
Where does Dean Sysman work?
Dean Sysman is Founder of Axonius and Venture Advisor at Bessemer Venture Partners and Co-founder at Cymmetria.
What check size does Dean Sysman write?
Dean Sysman typically writes checks of $5K – $50K.
What companies did Dean Sysman found?
Dean Sysman founded Axonius, Cymmetria.
What companies has Dean Sysman invested in?
Investments tracked here include Biocartesian, Capitol AI, Handl, NeoWize, Nest Genomics, NextSilicon, Pointfive, Reframe, Syntra, TeamOut.
Where did Dean Sysman go to school?
Dean Sysman studied at Columbia University (Doctor of Philosophy, Electrical and Electronics Engineering); University of Haifa (Bachelor of Science (B.Sc.), Computer Science); The Hebrew Reali School (High School, Computer Science).

Founder mafias

Same school

Shared employers