What is GDPR? a complete guide to the general data protection regulation
The general data protection regulation (GDPR), a pivotal data protection law, has revolutionized how businesses handle personal data. Whether you’re a company, organization, or individual, understanding what GDPR is and how it impacts data privacy is crucial. In this guide, we’ll break down the essentials of GDPR, its key principles, and how it affects businesses worldwide.
What is GDPR?
The General Data Protection Regulation (GDPR) is a law established by the European Union to safeguard personal data and ensure that organizations manage, store, and process such information responsibly. Enforced on may 25, 2018, GDPR replaced outdated data protection laws and introduced stricter requirements for data privacy and security. Under GDPR, a 'data controller' is the entity that determines the purpose and means of processing personal data, while a 'data processor' is a third party that processes data on behalf of the data controller. Want a deeper understanding of the roles of data controllers and processors? Explore our full breakdown here..
Although GDPR is an eu regulation, it applies to companies worldwide if they process or handle data belonging to eu citizens. This means that businesses in the us, uk, and other non-eu countries must comply if they collect data from european users. The regulation, originating from the european union, sets a robust framework for data protection and privacy, impacting organizations globally.
History and background of GDPR
The General Data Protection Regulation (GDPR) has its roots in the European Union’s (EU) long-standing commitment to protecting personal data and privacy. The journey began with the Data Protection Directive of 1995, which aimed to establish a minimum standard for data protection across member states. However, as technology rapidly evolved and data became increasingly integral to the digital age, the EU recognized the need for a more comprehensive and robust data protection framework.
In 2011, the EU embarked on the ambitious task of overhauling its data protection laws, leading to the development of what we now know as GDPR. This regulation was officially adopted on April 27, 2016, and became enforceable on May 25, 2018, replacing the outdated Data Protection Directive. The adoption of GDPR marked a significant shift in how organizations approach data protection, responding to growing concerns about data privacy and security.
GDPR is designed to provide a high level of protection for personal data while promoting the free flow of data within the EU and beyond. It is built on several key principles, including transparency, fairness, and accountability. Additionally, GDPR introduces new concepts such as data protection by design and by default, ensuring that data protection measures are integrated into the development of business processes and systems from the outset. GDPR is designed to provide a high level of protection for personal data while promoting the free flow of data within the EU and beyond. It is built on several key principles, including transparency, fairness, and accountability. Additionally, GDPR introduces new concepts such as data protection by design and by default, ensuring that data protection measures are integrated into the development of business processes and systems from the outset. Curious about who should have access to personal data and why it matters? Dive into our guide on data access and responsibility.
Interested in how GDPR is enforced locally? Explore the role of the Danish Data Protection Agency and its impact on GDPR compliance.
Key principles of GDPR
At the heart of GDPR are seven core data protection principles that guide how companies must process personal data:
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Lawfulness, fairness, and transparency: Companies must collect and process data legally and transparently.
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Purpose limitation: Data can only be collected for a specific, legitimate purpose.
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Data minimization: Only the necessary data should be collected and stored.
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Accuracy: Data must be accurate and up to date.
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Storage limitation: Personal data should not be kept longer than necessary.
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Integrity and confidentiality (security): Companies must implement strong security measures.
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Accountability: Businesses must document their compliance with GDPR.
Scope and applicability of GDPR
The GDPR covers all entities that collect or use personal data from people residing in the EU, even if the organization operates outside the EU. This broad scope means that even companies based outside the EU must comply if they handle data from EU citizens. GDPR covers all types of personal data, including sensitive information such as health and financial records.
Both data controllers and data processors are subject to GDPR. Data controllers determine the purposes and means of processing personal data, while data processors handle data on behalf of controllers. GDPR introduces new obligations for data processors, including the requirement to maintain records of data processing activities.
The regulation also applies to organizations offering goods or services to EU residents, irrespective of the organization’s base. This extraterritorial reach ensures that EU citizens’ data is protected globally. GDPR introduces the concepts of “one-stop-shop” and “lead supervisory authority” to facilitate cooperation and consistency among member states.
Furthermore, GDPR ensures the free flow of data within the EU while protecting personal data when transferred to third countries or international organizations. The regulation is enforced by the European Data Protection Board (EDPB) and national supervisory authorities, which have the power to impose significant fines for non-compliance. This robust enforcement mechanism underscores the importance of adhering to GDPR’s stringent requirements.
Who needs to comply with GDPR?
GDPR applies to any organization that processes the personal data of eu citizens. Your business is covered by GDPR if:
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It employs staff whose personal data is processed for payroll, hr, or other reasons.
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It serves individual customers, requiring data collection for sales, services, or transactions.
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It operates a website that tracks visitors, using cookies, analytics, or behavioral tracking.
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It communicates with customers via contact forms, email marketing, or newsletters.
Handling the data collected in compliance with GDPR is crucial, especially regarding personally identifiable information, to ensure proper data anonymization and pseudonymization.
Even if your business is outside the eu, GDPR still applies if you collect or process data from eu residents.
What is personal data under GDPR?
According to the GDPR, personal data includes any type of information that makes it possible to recognize or identify a person, whether that identification is straightforward or happens through combining different details. This may include, for example:
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Names and addresses
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Phone numbers and email addresses
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Ip addresses and cookies
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Location data
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Online usernames
Certain types of sensitive personal data require even stricter protection, such as:
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Health records
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Biometric and genetic data
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Religious and political beliefs
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Sexual orientation
Even pseudonymized data (data that has been anonymized but can still be traced back to an individual) falls under GDPR regulations.
How GDPR affects businesses
For businesses, GDPR compliance is essential for legal operation, reputation management, and customer trust. Appointing a Data Protection Officer (DPO) can be crucial for ensuring compliance, as the DPO advises staff on their responsibilities, conducts trainings and audits, and acts as a liaison with regulators. Here’s what companies must do to stay compliant:
In the event of a data breach, companies must notify data subjects within 72 hours to comply with GDPR regulations. Failure to do so can result in severe consequences.
Understanding the rights of data subjects under GDPR is also critical. These rights include consent and the legal basis for data processing, which are essential for ensuring compliance with data protection laws.
1. Obtain lawful consent
GDPR requires businesses to have a legal basis for processing personal data. The most common basis is user consent, which must be:
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Freely given and unambiguous
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Specific and informed
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Clearly documented
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Revocable at any time
2. Implement data security measures
Companies must ensure data security by:
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Using encryption and firewalls
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Restricting access to sensitive data
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Regularly updating security software
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Conducting GDPR compliance audits
3. Notify data breaches
GDPR mandates that companies report data breaches within 72 hours if they pose a risk to individuals’ rights. This includes:
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Cyberattacks and ransomware incidents
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Lost or stolen devices containing personal data
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Accidental exposure of customer information
4. Sign data processing agreements
Companies working with third-party data processors (such as cloud providers, payroll services, or marketing tools) must have data processing agreements (dpas) to ensure GDPR compliance.
Common data processors include:
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Accounting software (e.g., dinero, e-conomic)
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Email marketing platforms (e.g., mailchimp, activecampaign)
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Hr and payroll services (e.g., dataløn, danløn)
What are the fines for GDPR violations?
Failure to comply with GDPR can result in hefty fines. Organizations can be fined up to:
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€20 million or 4% of annual global revenue, whichever is higher, for severe breaches.
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€10 million or 2% of annual revenue for less severe violations.
Notable GDPR fines
Since its enforcement, GDPR regulators have issued major fines, including:
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Google (€50 million): Fined for inadequate user transparency regarding data collection.
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La liga’s app: Penalized for secretly tracking users.
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Dsk bank (bulgaria): Fined for exposing customer data.
In denmark, GDPR violations are handled by datatilsynet, which reports severe cases to the police for legal prosecution.
Why GDPR compliance matters
Beyond avoiding fines, GDPR compliance helps businesses:
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Build trust with customers by safeguarding their personal data.
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Enhance brand reputation as a responsible, privacy-conscious company.
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Improve internal data management and security processes.
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Ensure legal compliance in all business operations.
GDPR compliance is also crucial for international organisations, as it governs the transfer of personal data to third countries or international organisations, ensuring that legal and procedural considerations are met globally.
Conclusion: Stay GDPR compliant
Understanding what GDPR is and ensuring compliance is essential for any modern business. By following GDPR rules, companies can protect customer data, enhance security, and avoid costly fines.
Need help with GDPR compliance? Start by reviewing your data processing policies, obtaining clear user consent, and implementing strong security measures.
By prioritizing data privacy and security, businesses can thrive in a world where personal data protection is more important than ever.
This post has been updated on 21-03-2025 by Sarah Krarup.

Sarah Krarup
Sarah studies innovation and entrepreneurship with a deep interest in IT and how cybersecurity impacts businesses and individuals. She has extensive experience in copywriting and is dedicated to making cybersecurity information accessible and engaging for everyone.
View all posts by Sarah Krarup