What is the difference between data privacy and information security?
The terms "data protection" and "information security" are frequently mentioned in compliance meetings, yet they are often confused. After all, anyone who believes that GDPR compliance automatically covers all security requirements risks leaving gaps in their security strategy.
The 2025 Situation Report from the BSI (Federal Office for Information Security) highlights just how serious the situation is: The IT security situation in Germany remains tense, with inadequately protected attack surfaces in particular leaving companies vulnerable in the digital space. Just how serious the consequences of such attacks can be was already demonstrated in 2023 by a ransomware attack on a municipal IT service provider: 72 municipal clients with approximately 20,000 workstations were affected, disrupting critical services for around 1.7 million citizens. At the same time, legal requirements such as the GDPR are increasing the pressure to consistently protect personal data.
In this article, you’ll learn the difference between data protection and information security, how these two areas interact, and what specific steps companies can take to minimize risks.
Data Protection and Information Security: Key Points at a Glance
- Data protection safeguards personal data, while information security safeguards all of a company's business information.
- Information security is based on the CIA triad: confidentiality, integrity, and availability. It encompasses, among other things, IT security, data security, access controls, encryption, and disaster recovery plans.
- Data protection is governed by law and is based on the GDPR, the BDSG, and other data protection laws. Key factors include legal basis, purpose limitation, transparency, documentation, and the protection of data subjects’ rights.
- In practice, the two areas are closely intertwined: Data protection defines the legal requirements, while information security provides many technical and organizational measures for implementation.
- People remain the key factor: Clear processes, technical safeguards, and practical training help employees identify risks and act safely.
What do data protection and information security mean?
Data protection safeguards the personal data of individuals and ensures their fundamental right to privacy. Information security protects all of a company’s business information, regardless of whether it is personally identifiable. Both areas have related but distinctly different focuses and objectives.
What is the difference between data privacy and information security?
The following table shows the main differences.
Information security: protection of all business information and data
The term "information security" refers to all measures taken to protect corporate information from unauthorized access, tampering, or loss. These include, for example:
- Trade secrets and research data
- Technical and organizational know-how
- Contracts and business documents
- IT systems and technical infrastructure
- Processes and communication channels
The three pillars of information security
Three elements form the foundation of strong information security; they are also known as the "CIA triad": confidentiality, integrity, and availability.
Confidentiality
Information should be accessible only to authorized individuals. Typical measures include encrypting sensitive data, secure authentication, and role-based access controls.
Integrity
Information must be accurate, complete, and protected against undetected tampering. This is ensured, for example, by digital signatures, audit logs, regular backups, and checksums (digital fingerprints used to detect data tampering).
Availability
Systems and data must be available when needed. Companies ensure this through measures such as redundant systems and data storage, emergency plans, business continuity management, and a robust IT infrastructure.
Data security and IT security as subfields
Data security and IT security are key components of information security.
- IT security primarily refers to technical measures designed to protect IT systems, networks, applications, and digital data.
- Data security focuses on protecting personal and company data from loss, tampering, and unauthorized access.
data privacy: focus on personal data
As the name suggests, data protection focuses on the protection of personal data. This refers to any information that can be directly or indirectly linked to a natural person. This includes, for example:
- personal identifying information such as name, date of birth, or address
- Contact and communication information, such as e-mail or phone number
- Online identifiers such as IP addresses or cookie IDs
- Financial information such as account numbers or credit card details
- special categories of personal data, such as health data
In day-to-day business operations, data protection therefore primarily concerns the question of whether personal data is processed lawfully, transparently, and for specific purposes.
Legal Framework and Standards for Data Protection and Information Security
Clear sets of rules provide guidance to companies and help systematically minimize risks. Three standards are particularly relevant in this regard.
GDPR as the foundation of data protection
The EU-wide General Data Protection Regulation (GDPR) has shaped the handling of personal data since 2018. Its key requirements for businesses are:
- Companies need a legal basis or consent for any data processing.
- The use of data must be based on the original purpose of collection.
- Organizations must document all processing activities.
- In the event of a data breach, there is generally a requirement to report it within 72 hours.
- Companies must appoint a data protection officer if the legal requirements for doing so are met.
ISO 27001 makes information security measurable
Just as the GDPR is for data protection, ISO 27001 is for information security: the international standard for an effective information security management system (ISMS). The standard helps organizations systematically assess risks, document security policies, train employees, regularly review measures, and continuously improve their level of security. ISO 27001 certification demonstrates to customers and partners that information security is systematically managed and regularly reviewed.
ISO 27701 builds the bridge
ISO 27701 extends an existing ISMS to include a Privacy Information Management System (PIMS), thereby integrating data protection and information security. This allows organizations to manage data protection and information security within a single integrated system. Companies can avoid duplication of effort, harmonize processes, and demonstrate GDPR compliance at any time.
How data privacy and information security work together
Although these two areas have different focuses, they are intertwined in practice: Data protection defines the legal requirements for personal data, while information security provides the technical and organizational measures needed to implement them.
Specific examples of this synergy:
- Encrypted e-mails protect both personal data and confidential business communication.
- Access control systems secure customer data and sensitive company information at the same time.
- Backup strategies ensure the availability of both personal and business-critical data.
Cyberattacks and Reputational Damage: The Risks for Businesses
Those who neglect data protection and information security risk more than just fines. The consequences range from business disruptions and reputational damage to a loss of trust. Four areas of risk are particularly relevant:
- Cyberattacks, ransomware, and system failures
Ransomware attacks encrypt company data and can paralyze entire systems. The consequences are severe: failure of communication systems, production downtime due to blocked machines, loss of access to customer and order data, delays in order processing, and costs associated with emergency measures and recovery.
- Human error and social engineering
Often, all it takes is a misdirected e-mail: confidential information ends up in the wrong hands, personal data is inadvertently disclosed, or trade secrets are leaked to outsiders. Even more dangerous is targeted social engineering: phishing emails are used to steal login credentials, fake invoices trigger payments, or supposed supervisors order data transfers.
- Industrial espionage and loss of know-how
Competitors and other stakeholders also consistently seek out confidential information. If research findings, technical documentation, or internal know-how are disclosed, this can jeopardize innovation and weaken a company’s market position.
- Legal, financial, and reputational consequences
A violation of the GDPR can result in fines of up to 20 million euros or 4% of global annual revenue. But immediate fines are only part of the risk: Data subjects can seek compensation, and companies must investigate, document, and, if necessary, report incidents to supervisory authorities. Depending on the nature of the incident, affected individuals must also be notified. If a data protection or security incident becomes public, stakeholders trust can suffer stakeholders . Existing contracts are reevaluated, new business relationships become more difficult to establish, and reputational damage can have long-lasting effects.
People as a decisive factor
While the human factor plays a significant role in security incidents, it is usually not due to intent or malice, but rather to uncertainty, time pressure, or a lack of knowledge. That is why companies must establish an environment that makes it easier to act securely in day-to-day operations. This includes clear guidelines, supportive technical systems, a culture of open feedback, and leaders who consistently lead by example in data protection and information security.
Practical training plays a key role in this regard. It helps employees identify risks early on, apply regulations correctly, and respond confidently in critical situations. A lasting safety culture can only be fostered when knowledge, processes, and corporate culture work together.
Professional training: The Compliance College
With the Compliance College , Haufe Akademie offers Haufe Akademie comprehensive digital solution to provide professional development for your employees while simplifying your processes. Here you’ll find all key training topics on a single platform: data protection, IT security, compliance, and occupational safety. This helps ensure compliance while reducing the workload on your HR and compliance teams.
Practical expertise meets modern learning technology
Our training courses developed by experts combine technical depth with innovative didactics:
- Adaptive e-learning courses adapt to each learner's individual level of knowledge.
- Interactive formats such as simulations and gamification ensure varied learning.
- Practical case studies enable direct knowledge transfer.
- Multilingual content (up to 12 languages) also reaches international teams.
Security and efficiency for your company
The Compliance College is a complete digital solution that creates process security:
- Automated reporting fulfills all documentation requirements.
- Legally compliant evidence guarantees audit security.
- Integratable corporate guidelines create commitment.
- Resource-saving processes minimize the time required.
- Personal consultation supports the implementation.
FAQ
What is the difference between data protection and data security?
Data protection is a legal concept: it safeguards personal data and ensures the fundamental right to informational self-determination, as governed by the GDPR. Data security is a technical and organizational concept: it protects data from loss, manipulation, and unauthorized access, regardless of whether the data is personally identifiable. Data security is thus a subset of information security, whereas data protection is a distinct legal discipline.
What is personal data?
Personal data refers to any information relating to an identified or identifiable natural person. This includes obvious details such as name, address, or date of birth, as well as less obvious ones such as IP addresses, cookie IDs, location data, or biometric characteristics. What matters is not the format, but whether a connection to a specific individual can be established, even indirectly. Particularly sensitive categories such as health data, data regarding ethnic origin, or sexual orientation are subject to a higher standard of protection under the GDPR.
Who is responsible for data protection and information security within the company?
Responsibilities are clearly separated: The Data Protection Officer (DPO) is responsible for data protection, a role that is required by law in many companies. The Information Security Officer (ISO) or Chief Information Security Officer (CISO) is responsible for information security. Both roles are independent of one another but should work closely together, particularly when introducing new systems, in the event of data breaches, or when establishing an integrated management system in accordance with ISO 27701.
How are the GDPR and information security related?
Article 32 of the GDPR explicitly requires technical and organizational measures to protect personal data, thereby describing exactly what information security achieves. A functioning ISMS in accordance with ISO 27001 can therefore directly contribute to GDPR compliance. Nevertheless, information security is no substitute for data protection: ISO 27001 certification does not automatically mean that all GDPR requirements are met. ISO 27701 bridges the gap and enables a common management system for both areas.
You might also be interested in
