Responsible individuals in companies and authorities must assign a high priority to the topic of information security today. Complex IT structures and diverse threats to corporate networks and data require an intensive engagement with questions and requirements surrounding information security. The standards of the Federal Office for Information Security (BSI) provide solutions in this area. The revised BSI standards include recommendations for methods and measures that allow for the assessment of an institution's security level and the remediation of vulnerabilities with appropriate actions. The BSI addresses areas that are fundamentally important for information security in authorities or companies, for which sensible and practical approaches have been established nationally or internationally. With the 3rd edition.