Finland has long been following the comprehensive security strategy creating a network of cooperation between authorities, businesses, organisations, and citizens. Its comprehensive approach to providing the population’s security is viewed as a model for Europe. Finland has become the leader in building national preparedness for contemporary challenges and threats. This preparedness is more than an approach, it is also an ability fostered by the whole society. Most importantly, such an approach is widely supported in society. This comprehensive approach to security makes it possible to maintain social functions, promote the well-being and security of citizens, and protect the nation’s independence. The aim of the article is to present the concept of national preparedness and to analyse practical ways of achieving comprehensive security in Finland.