ActiveFence

ActiveFence is the leading provider of UGC and AI Safety solutions, delivering the industry’s most robust safeguards, to protect the world’s leading foundation models and AI-powered applications. Trusted by safety teams of all sizes, we help protect over three billion users from threats such as child abuse, exploitation, hate speech, and more. Our comprehensive solutions integrate deep intelligence research, AI-driven harmful content detection, and a robust moderation platform, enabling global platforms to operate safely and responsibly in over 100 languages.

activefence.com

ActiveFence

activefence.com

HQUS

Team Size366

Open Jobs20

Total Funding$100M

Latest FundraiseUnknown

TL;DR

Core offering: AI-driven trust & safety platform for detecting and preventing online harm (child abuse, hate speech, disinformation, fraud, terror, etc.).

Scale: Claims to protect over 3 billion users and supports 100+ languages.

Funding (disclosed): $100M disclosed in July 2021 (covers a Series B and a previously unannounced Series A).

Founding & HQ: Founded in 2018; co-headquartered in New York and Tel Aviv.

M&A signal: Acquired Rewire (announced March 8, 2023) to expand text-based harmful-content models.

Team size (directory): Reported ~366 employees.

Company Overview

Problem Domain

Trust & Safety / online harm detection and prevention for platforms (content and behavior abuse).

Founded

2018

Industry

Software Development

Funding Track Record

Series B- 2021-07-26

Part of the $100M disclosed on July 26, 2021; the $100M covered this Series B and a previously unannounced Series A.

Series A

Previously unannounced Series A included in the $100M disclosed July 26, 2021.

Undisclosed round- Q1 2023

Reported undisclosed funding round in Q1 2023; amount and investors not publicly disclosed.

Investor Signal

“Investors reported include CRV, Highland Europe, Norwest Venture Partners, Grove Ventures, Vintage Investment Partners, Resolute Ventures and Phoenix Financial; Telefonica has also been reported as an investor.”

Founders

What we do

TL;DR

Company Overview

Funding Track Record

Founders

What we do

ActiveFence

activefence.com

ActiveFence

activefence.com

HQUS

Team Size366

Open Jobs20

Total Funding$100M

Latest FundraiseUnknown

TL;DR

Core offering: AI-driven trust & safety platform for detecting and preventing online harm (child abuse, hate speech, disinformation, fraud, terror, etc.).

Scale: Claims to protect over 3 billion users and supports 100+ languages.

Funding (disclosed): $100M disclosed in July 2021 (covers a Series B and a previously unannounced Series A).

Founding & HQ: Founded in 2018; co-headquartered in New York and Tel Aviv.

M&A signal: Acquired Rewire (announced March 8, 2023) to expand text-based harmful-content models.

Team size (directory): Reported ~366 employees.

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Company Overview

Problem Domain

Trust & Safety / online harm detection and prevention for platforms (content and behavior abuse).

Founded

2018

Industry

Software Development

Funding Track Record

Series B- 2021-07-26

Part of the $100M disclosed on July 26, 2021; the $100M covered this Series B and a previously unannounced Series A.

Series A

Previously unannounced Series A included in the $100M disclosed July 26, 2021.

Undisclosed round- Q1 2023

Reported undisclosed funding round in Q1 2023; amount and investors not publicly disclosed.

Investor Signal

Founders

What we do

Related Companies

Company	HQ	Industry	Total Funding
Terra Security	🌍Remote	Information TechnologySecuritySoftware	-
Zenity	🌍Undisclosed	Information TechnologySecurity	-
nexos.ai	🇱🇹LT	Data and AnalyticsDeepTechInformation TechnologySoftware	-
Orca Security	🇺🇸US	Information TechnologyInternet ServicesLegalProfessional ServicesSecuritySoftware	$632M
Escape	🇺🇸US	Data and AnalyticsDeepTechInformation TechnologySecuritySoftware	-

Join the Team

Senior Security Researcher

HybridRamat Gan, Tel Aviv District

Hybrid • Ramat Gan, Tel Aviv District

The Position:

We are seeking a highly motivated and technically proficient Senior Security Researcher to join our security research division. This role is dedicated to performing advanced offensive security assessments against the biggest companies in the world

You need to be independent, attentive to details, organized, eager to learn new things, and like to research and solve problems

What you’ll do:

Engage in sophisticated Red Team projects, including the identification of undisclosed API endpoints and development of novel bypass techniques for established security controls
Lead and execute comprehensive, technically rigorous security research targeting complex web and mobile applications including reverse engineering and proprietary protocols investigation

Teeming tracks opportunities at over 24,000 AI startups, then works with you to find (and land) the one you'll love.

Frontend Developer

Full-timeAmsterdam, NL

Full-time • Amsterdam, NL

Machine Learning Engineer

Part-timeMunich, DE

Part-time • Munich, DE

Backend Developer

Part-timeTel Aviv

Part-time • Tel Aviv

Product Designer

InternshipHaifa

Internship • Haifa

Machine Learning Engineer

ContractAustin, US

Contract • Austin, US

AI Researcher

ContractBerlin, DE

Contract • Berlin, DE

Minimum of 3 years of proven, hands-on experience in application security analysis and Web penetration testing
Strong experience with reverse engineering and dynamic analysis of Android and iOS applications, including hands-on experience with techniques like detours, hooking, and runtime code manipulation
Proficiency in developing and automating tasks using at least one language like Python, JavaScript, or GoLang.
Deep, hands-on knowledge of the latest tactics, techniques, and procedures (TTPs) used in advanced penetration testing and network analysis.
Ability to author comprehensive and technically rigorous reports detailing identified vulnerabilities and research outcomes.

OSCP, OSWE, eWPTXv2, CRTP, or other high-level offensive certifications.
Hands-on experience with industry-standard reversing tools like JADX, Ghidra, or IDA Pro.
Demonstrated online achievements, write-ups, or contributions on platforms such as HackTheBox, Pwn2Own, TryHackMe, Bug Bounty programs, or published security research.

ActiveFence is the leading provider of security and safety solutions for online experiences, safeguarding more than 3 billion users, top foundation models, and the world’s largest enterprises and tech platforms every day.

As a trusted ally to major technology firms and Fortune 500 brands that build user-generated and GenAI products, ActiveFence empowers security, AI, and policy teams with low-latency Real-Time Guardrails and a continuous Red Teaming program that pressure-tests systems with adversarial prompts and emerging threat techniques. Powered by deep threat intelligence, unmatched harmful-content detection, and coverage of 117+ languages, ActiveFence enables organizations to deliver engaging and trustworthy experiences at global scale while operating safely and responsibly across all threat landscapes.