Reken has emerged from stealth with a new on-device AI security platform designed to improve trust and safety in online communications. Alongside the platform, the company introduced Northstar, its first AI-powered cybersecurity application, which helps organizations detect phishing, deepfakes, social engineering, and AI-enabled fraud without relying on traditional security awareness training.
As AI-generated scams, deepfakes, and cyberattacks continue to increase, organizations face growing challenges in verifying the authenticity of digital communications. Reken aims to address this problem through a new on-device AI security architecture that protects users without exposing sensitive communication data.
The company spent two years developing its technology platform before officially emerging from stealth. Built around the Reken Private Core, the platform combines AI-powered threat detection with privacy-focused processing that operates directly on user devices.
"The Internet is not safe, and is getting less safe every day because of AI," said Shuman Ghosemajumder, CEO of Reken.
"Traditional cybersecurity has failed to solve these problems, and increasing scams, fraud, and cybercriminal use of AI have accelerated this erosion of trust. We need a new architecture to prevent our critical online channels from becoming overwhelmed."
The Reken Private Core serves as the foundation for the company's cybersecurity platform. Rather than relying entirely on cloud-based AI services, it processes communications locally on devices while identifying malicious activity in real time.
Key capabilities include:
Products built on the platform also connect to the Reken Network, a trust layer that enables organizations to securely exchange communications while automatically analyzing inbound messages for malicious behavior and deceptive content.
"There is nothing like this available to CISOs," said Jim Routh, the former Chief Information Security Officer of American Express, DTCC, Aetna/CVS Health and MassMutual.
"This will enable companies and their supply chains to significantly improve the level of safety they can expect in their communications."
The first application built on the Reken Private Core is Northstar, an AI-powered assistant designed to help employees identify cyber threats in real time.
Instead of relying solely on recurring cybersecurity awareness training, Northstar provides just-in-time protection by automatically identifying sophisticated attacks that are often difficult for users to recognize.
The platform helps defend against:
According to Reken, this approach reduces the need for employees to manually analyze suspicious communications while improving organizational security.
"Companies spend millions of human hours per day and billions of dollars on security training that simply doesn't work," said Ghosemajumder.
"We shouldn't be forcing employees to become forensic digital investigators. We need just-in-time AI that detects the threats the human eye cannot see. That's what Northstar does."
Reken was founded by cybersecurity veterans Shuman Ghosemajumder and Rich Griffiths, who previously helped build Shape Security before its acquisition by F5.
The company raised $10 million in 2024 to develop its AI cybersecurity platform and is backed by several venture capital firms focused on enterprise technology and AI innovation.
With the launch of the Reken Private Core and Northstar, the company aims to help enterprises strengthen digital trust by combining AI-powered threat detection, privacy-first security architecture, and real-time protection against increasingly sophisticated cyber threats.
Reken is building An Internet Safe for Humans. It was founded by Shuman Ghosemajumder and Rich Griffiths, who helped build Shape Security into the leading AI bot defense, which was acquired by F5 in 2020 for $1B. Shuman previously founded Google's Trust & Safety product group, protecting 1B+ users and advertisers, and helped launch Gmail. Reken has raised $10M in a round led by Greycroft and FPV Ventures, and including Firebolt Ventures, Fika Ventures, Omega Venture Partners, Homebrew, and JAZZ Venture Partners. Reken's backers include top funds led by many early Google employees and Google-connected investors, including Wesley Chan (FPV), Hunter Walk & Satya Patel (Homebrew), Eva Ho (Fika), and Gokul Rajaram. Google DeepMind executive Jon Steinback (Sequoia Capital Scout Fund) and Vishal Vasishth (co-founder, Obvious Ventures) are also investors. Greycroft partner and Bay Area head, Marcie Vu, who helped lead Google's IPO, serves on the Reken board.
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