Cinder was founded by Glen Wise, Phil Brennan, Brian F, Declan Cummings in 2022.

Who are Cinder's investors?

Cinder's investors include Accel, J2 Ventures, Mozilla Ventures, Pioneer, Radical Ventures, Webb Investment Network, Y Combinator, M12 (Microsoft's Venture Fund) and 4 more.

How much funding has Cinder raised?

Cinder has disclosed $53.8M raised across 2 of its 3 known rounds.

Where is Cinder headquartered?

Cinder is headquartered in New York City, US.

Cinder

YC W22

New York City, US · Founded 2022 · 30 employees · Hiring · 15 known investors

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Cinder provides trust and safety infrastructure that uses AI agents to detect and act on abuse, fraud, and policy-violating content such as CSAM, extremism, and adult material across online platforms. It offers a configurable moderation platform with policy-aligned agents, human-in-the-loop review, audit trails, and services like AI red teaming, data labeling, and managed operations for enterprise product and safety teams.

Also known as Cinder Technologies, Inc.

AI & Machine Learning Cybersecurity Enterprise Software SaaS B2B Compliance Trust & Safety AIUnited States of AmericaAmerica / CanadaPartly Remote

Founders & leadership· Y Combinator alumni (W22)

Cinder was founded in 2022 by Glen Wise, Phil Brennan, Brian F, and Declan Cummings.

Glen Wise Co-Founder & CEOGlen Wise graduated from Carnegie Mellon and worked as a security engineer at Meta (formerly Facebook) for over three years, where he helped build community threat intelligence infrastructure. He founded Cinder in 2021 to address trust and safety challenges for other organizations.30 Under 30 2024

Phil Brennan Co-FounderPhil 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.

Brian FFounder

Declan Cummings Co-Founder and Head Of EngineeringPreviously, he was a security engineer at Facebook where he developed detection and analysis systems for threats including nation-state espionage, misinformation, terrorism, and child exploitation.

Brian FishmanFounder

Philip BrennanFounder

Frances PattonExecutive Assistant

Bridget MartinRecruiting

Farhana Ismail

Ellen Patton

Alex CollinsPresidentformer

Board

Sara Ittelson Board directorInvestor at Accel

Investors · 15

Accellisted by AccelPalo Alto · $500K – $100M

How we know: Accel's portfolio page · a partner's Signal profile · board seat on SEC Form D · funding news · cinder.ai · open dataset · 5k.vc investor directory · Y Combinator's founder network · Not right? Tell us

J2 Ventureslisted by J2 VenturesBoston

How we know: the VCSheet dataset · Not right? Tell us

Mozilla Ventureslisted by Mozilla Ventures

How we know: Mozilla Ventures's portfolio page · Not right? Tell us

Pioneerlisted by PioneerToronto, Ontario

How we know: Y Combinator's founder network · pioneerfund.vc · open dataset · 5k.vc investor directory · Not right? Tell us

Radical Ventureslisted by Radical VenturesToronto · $1M – $25M

How we know: Radical Ventures's portfolio page · funding news · cinder.ai · open dataset · 5k.vc investor directory · Not right? Tell us

Webb Investment Networklisted by Webb Investment NetworkSan Francisco · $500K – $750K

Y Combinatorlisted by Y CombinatorSan Francisco · $500K

How we know: the Y Combinator directory · funding news · cinder.ai · open dataset · 5k.vc investor directory · Not right? Tell us

M12 (Microsoft's Venture Fund)reportedSeattle · $100K – $10M

How we know: alleywatch.com · Not right? Tell us

MischiefreportedSan Francisco · $1M – $5M

How we know: Y Combinator's founder network · Not right? Tell us

OUTPOST VENTURESreportedAlexandria

How we know: alleywatch.com · Not right? Tell us

PSP Growth FundreportedChicago · $1M – $5M

How we know: cinder.ai · Not right? Tell us

Vivek Sodera VenturesreportedSeattle

How we know: Y Combinator's founder network · Not right? Tell us

Also in the syndicate · 3

M12Microsoft's Venture FundNeuberger’s Outpost Ventures

Funding

SEC filings, press & company announcements

$53.8M disclosed across 2 of 3 rounds · 2022–2026

$41MSeries BMay 2026 · 4 sources
Radical Ventures (lead), Accel, M12, M12 – Microsoft's Venture Fund, Microsoft's Venture Fund, Neuberger’s Outpost Ventures, Outpost Ventures, Pioneer Fund, PSP Growth, Y Combinator
Source ↗
Undisclosed amountSeed and Series ADec 2022
Source ↗

▶$12.8MraisedDec 2022 · 30 investors · Other Technology

Rule 506(b)

Officers, directors & promoters on the filing

Philip BrennanExecutive Officer, Director
Sara IttelsonDirector
Glen WiseExecutive Officer, Director

Offering amount: $13.7M
Amount sold: $12.8M
First sale: Nov 2022
Incorporated: Corporation, Delaware, 2021
Federal exemptions: 06b

Full filing on SEC EDGAR ↗

Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.

Founder mafia

2 people who came through Cinder went on to found or lead other companies.

Vivek SoderaInvestor (Seed)Founded LiveRamp David DubickInvestorFounded Delphos Labs

Related companies · 10

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InthInth provides developer-first consent infrastructure that allows software teams to manage cookie consent, regional rules, and script loading directly in code rather than through external platforms. The product targets engineering teams that ship frequently and need to maintain consent compliance without performance degradation.

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SafetyKitSafetyKit provides an AI-powered fraud detection and abuse prevention platform for online marketplaces and platforms. The system uses a Network Foundation Model to ingest user actions via SDK and API, analyze behavioral signals in real-time, and automatically investigate cases to reduce manual review burden.

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Companies working in the same space as Cinder.

Legal entities · 1

corporate structure

Cinder Technologies, Inc.

In the news

Cinder Raises $41M Series Bthesaasnews.com · Jun 2026

Trysignalbasetrysignalbase.com · May 2026

Cinder Series B Announcement | Cindercinder.ai · May 2026

Cinder Funding | $5.7-7.2M Revenue | Complete Analysis | Extruct AIextruct.ai

Frequently asked questions

What does Cinder do?: Cinder provides trust and safety infrastructure that uses AI agents to detect and act on abuse, fraud, and policy-violating content such as CSAM, extremism, and adult material across online platforms. It offers a configurable moderation platform with policy-aligned agents, human-in-the-loop review, audit trails, and services like AI red teaming, data labeling, and managed operations for enterprise product and safety teams.
Who founded Cinder?: Cinder was founded by Glen Wise, Phil Brennan, Brian F, Declan Cummings in 2022.
Who are Cinder's investors?: Cinder's investors include Accel, J2 Ventures, Mozilla Ventures, Pioneer, Radical Ventures, Webb Investment Network, Y Combinator, M12 (Microsoft's Venture Fund) and 4 more.
How much funding has Cinder raised?: Cinder has disclosed $53.8M raised across 2 of its 3 known rounds.
Where is Cinder headquartered?: Cinder is headquartered in New York City, US.