Tatu Männistö

Senior Director of Technology 

+358 50 486 8583

Insta DefSec Oy

Insta DefSec’s information security unit provides IT security solutions for demanding customers, such as defense, authorities, banking, operators and network infrastructure providers with 30 years of experience. Our key competence areas include identity and key management & PKI products, services and customized solutions. In addition, our offering includes encryption solutions and IT security consulting and engineering services. Insta’s solutions are trusted e.g. by Nokia, Microsoft, Finnish Defence Forces and Airbus. Our security products are used in 40 countries.

Main ICT / mobile sector

Mobile security systems

Key offering in one sentence

IT security products, services and customized solutions for e.g. mobile network operators, system integrators and network infrastructure providers.


Identity & key management solutions, PKI products and services, High security VPN solution