In times of cyberattacks, data leaks and increasing compliance requirements, information security is becoming increasingly important for companies of all sizes. ISO/IEC 27001 is regarded as the international standard when it comes to systematically protecting information.
But what exactly is behind it? At its core, information security is based on three basic principles that are clearly defined in the standard.
1. confidentiality - protecting information that not everyone is allowed to see
Confidentiality means that information is only accessible to people who are authorized to see it. Whether customer data, contracts or internal strategies - not every employee or external party is allowed to see everything.
Three exemplary measures for maintaining confidentiality:
- Clear access rights and role assignments
- Data encryption
- Strong authentication mechanisms
2. integrity - ensure correct and complete data
Integrity ensures that information remains complete and unchanged - from the time it is created to the time it is used. Especially in the digital world, data can be unintentionally changed or manipulated. Integrity protects against this.
Three exemplary measures to safeguard integrity:
- Checksums and hash values for data validation
- Protection against unauthorized changes
- Logging of accesses and adjustments
3. availability - information must remain usable
Availability means that information and systems are available when they are needed. A sophisticated security system is useless if there are regular outages or access is impossible.
Three exemplary measures to ensure availability:
- Redundant systems and regular backups
- Emergency and recovery plans
- Protection against system failures and targeted attacks
Conclusion: The three principles as the foundation of information security
Confidentiality, integrity and availability - these three basic principles, also known as the CIA triad (Confidentiality, Integrity, Availability), form the foundation of every security strategy. ISO/IEC 27001 provides the structured framework for systematically implementing these principles in the company.
Whether you are a medium-sized company or a large corporation, a systematic approach such as the ISMS in accordance with ISO 27001 is indispensable for effectively protecting data and strengthening the trust of customers and partners.
Further insights
Find out how an information security management system works in practice in the article What is an ISMS - and how does it work in practice?.
Or deepen your knowledge directly with the ISO/IEC 27001 Foundation training from SERVIEW - practical, compact and certified.
