Reken, a new cybersecurity startup founded by former Google "click fraud czar" Shuman Ghosemajumder, has launched an on-device AI security platform called Private Core. The platform's first product, Northstar, aims to combat AI-powered phishing and fraud by running small AI models directly on a user's device, avoiding cloud-based risks and costs associated with third-party AI models. Reken's approach focuses on real-time threat detection and positive sender verification, rather than simply flagging AI-generated content, addressing the escalating problem of cybercrime which saw a 26% increase in reported losses in 2025. AI
IMPACT This on-device AI security approach could offer a more private and efficient way to combat AI-driven cyber threats for end-users and enterprises.
RANK_REASON Launch of a new product by a startup founded by a notable individual, but not a frontier AI model release.
- Anthropic
- Apple
- FBI
- FPV Ventures
- Google DeepMind
- Greycroft
- Northstar
- OpenAI
- Private Core
- Reken
- Rich Griffiths
- Shape Security
- Shuman Ghosemajumder
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