Web, domains and email
TR
Abbreviation for Technische Richtlinie
In short and in plain language
A TR is a tech guide from a public office for computer safety.
It says what is advised and what is needed on a safety topic.
Firms can use it as a guide, for example to keep email safe. It shows what the state of the art is.
Definition
A technical guideline of the BSI describes recommendations and requirements for a particular security topic. For businesses such guidelines offer orientation, for example on securing email, about what reflects the state of the art.