Berlin's Kazimi Raises €2.2M Pre-Seed to Fight Bot Activity in Mobile Marketing

Founded in 2024 by August Joseph (chief technology officer), Chase Gummer (chief executive), Ville Mikkola (chief operating officer), and Andreas Naumann (chief product officer), Kazimi secures the communication signals generated by an app. This allows developers to gather and verify first-party data, detect non-human bot activity, and separate genuine users from fake ones while preserving user privacy. The company uses cryptographic proofs designed to confirm interactions without exposing personal data and to support compliance with data protection rules.

Kazimi is targeting a growing problem for mobile businesses as automated internet traffic climbs. The company cited Cloudflare data indicating that bot activity surpassed human activity online for the first time in 2026, while AppsFlyer has reported that bots remain a significant source of fraudulent activity across mobile channels.

EU-Startups reported that Naumann said it had until now been technically impossible for app developers to have true visibility over which signals come from real users and which come from bots, adding that Kazimi's security solution aims to close that gap and help developers protect their first-party data.

The London and Amsterdam-based cybersecurity firm will use the funding to expand across EMEA and the U.S. and strengthen its engineering and research teams.