It's free for anyone to take, and Finns can get credit at the Open University of University of Helsinki (yes, that's what it's called).
The course series consists of multiple smaller courses, each centered around a specific theme. These themes include
a brief introduction to cyber security and operational security,
web software development, types of vulnerabilities that are typical to web software, how such vulnerabilities are discovered and then mitigated, and
advanced topics such as secure software architectures and cryptography.
(via 4 Short Links)