https://www.teletrust.de/en/publikationen/broschueren/state-of-the-art-in-it-security/
Direct link: https://www.teletrust.de/fileadmin/user_upload/2021-09_TeleTrusT_Guideline_State_of_the_art_in_IT_security_EN.pdf
[protecting people by good design, solid security, efficient processes and trusted services]