Phil Brennan
FounderFounder at Cinder · Founder at Cinder Technologies, Inc.
Washington DC-Baltimore Area
Find your path to Phil
1,527 people in our graph share verified history with Phil — schools, employers, funds. One of them is your warm intro.
About
Phil Brennan spent several years leading counterterrorism operations for the US government before joining Facebook in 2017, where he built out their community threat intelligence team. He later co-founded Cinder with Glen Wise, a former Facebook colleague.
Founder at CinderYC W22
Intro paths
Phil went through Y Combinator (Winter 2022) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Brad Flora, Backing expeditions into the future — the partner who ran Cinder's batch and knows the company first-hand. YC profile ↗
In turn, Phil can intro founders to Cinder's investors below.
Cinder's investors · 8
Co-founders at Cinder
Founder at CinderYC W22
Intro paths
Phil went through Y Combinator (Winter 2022) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Brad Flora, Backing expeditions into the future — the partner who ran Cinder's batch and knows the company first-hand. YC profile ↗
In turn, Phil can intro founders to Cinder's investors below.
Cinder's investors · 8
Co-founders at Cinder
Founder at Cinder Technologies, Inc.
Intro paths
In turn, Phil can intro founders to Cinder Technologies, Inc.'s investors below.
Cinder Technologies, Inc.'s investors · 1
Co-founders at Cinder Technologies, Inc.
Experience
- CinderCinder Agentcurrent2026 — presentThe internet
- CinderCo-Foundercurrent2022 — present
- FacebookSecurity Research2017 — 2022Washington DC-Baltimore Area
- US GovernmentTeam Lead2006 — 2017
- Office of the Secretary of DefenseIraq Country Director2011 — 2012
- Seeds of PeaceCounselor2002 — 2003Portland, Maine Metropolitan Area
Skills & more
Languages Arabic · French
From Phil's professional profile.
Frequently asked questions
- Who is Phil Brennan?
- Phil Brennan spent several years leading counterterrorism operations for the US government before joining Facebook in 2017, where he built out their community threat intelligence team. He later co-founded Cinder with Glen Wise, a former Facebook colleague.
- Where does Phil Brennan work?
- Phil Brennan is Founder of Cinder and Co-founder at Cinder Technologies, Inc..
- What companies did Phil Brennan found?
- Phil Brennan founded Cinder, Cinder Technologies, Inc..
- Where did Phil Brennan go to school?
- Phil Brennan studied at Y Combinator; Columbia | SIPA (Master’s Degree, International Relations and National Security Studies); Middlebury College (Summer Language Program, Arabic Language and Literature).
Founder mafias
Y Combinator mafia10,230
Also came through, then founded or led a company.
+ 10,223 more
Columbia University mafia454
Also came through, then founded or led a company.
+ 447 more
Middlebury College mafia45
Also came through, then founded or led a company.
+ 38 more
Columbia | SIPA mafia21
Also came through, then founded or led a company.
+ 14 more
SOAS University of London mafia17
Also came through, then founded or led a company.
+ 10 more
Same school
Also attended Y Combinator2,000
+ 1,994 more
Also attended Columbia | SIPA98
+ 92 more
Also attended Middlebury College211
+ 205 more
Also attended The Key School2
Shared employers
Also worked at Cinder4
Also worked at Facebook772
+ 766 more
Also worked at Office of the Secretary of Defense20
+ 14 more
