As of February 2025, the largest fine issued for violation of the General Data Protection Regulation (GDPR) in the United Kingdom (UK) was more than 22 million euros, received by British Airways in October 2020. Another fine received by Marriott International Inc. in the same month was the second-highest in the UK and amounted to over 20 million euros.

Since the enforcement of the General Data Protection Regulation (GDPR) in May 2018, fines have been issued for several types of violations. As of February 2025, the most significant share of penalties was due to companies' non-compliance with general data processing principles. This violation has led to over 2.4 billion euros worth of fines.

In September 2024, the Irish Data Protection Commission fined Meta Ireland 91 million euros after passwords of social media users were stored in 'plaintext' on Meta's internal systems rather than with cryptographic protection or encryption. In May 2023, the EU fined Meta 1.2 billion euros for violating laws on digital privacy and putting the data of EU citizens at risk through Facebook's EU-U.S. data transfers. European privacy legislation is seen as being far stricter than American privacy law, and the sending of EU citizens’ data to the United States resulted in the record breaking penalty being issued to the tech giant. In January 2023, after it was discovered that Meta Platforms had improperly required that users of Facebook, Instagram, and WhatsApp accept personalized adverts to use the platforms, the company was issued a 390 million euro fine by the European Commission. EU regulators claim that the social media giant broke the General Data Protection Regulation (GDPR) by including the demand in its terms of service. In addition, Meta was fined 405 million euros by the Irish Data Protection Commission (DPC) in September 2022 for violating Instagram's children's privacy settings. In November 2022, the DPC fined Meta a further 265 million euros for failing to protect their users from data scraping. GDPR violations in 2022 Social media sites and companies are not the only types of online services upon which users' data can potentially be compromised. In 2022, the online service with the biggest fine for violating GDPR was e-commerce and digital powerhouse Amazon, which was issued a 746 million euro fine. Furthermore, in December 2021, Google was penalized 90 million euros for GDPR violations. What are the most common GDPR violations? Since GDPR went into effect in May 2018, fines have been imposed for a variety of reasons. As of June 2022, companies' non-compliance with general data processing principles accounted for the largest share of fines, resulting in over 845 million euros worth of penalties. Insufficient legal basis for data processing was the second most common violation, amounting to 447 million euros in fines.

As of January 2025, the most significant data privacy violation fine worldwide was for social media giant Meta. In May 2023, the Data Protection Commission (DPC) of Ireland decided to fine the company with 1.2 billion euros or 1.3 billion U.S. dollars. The Chinese vehicle-for rent company Didi Global ranked second. In July 2022, China's data privacy regulator fined the company 8.026 billion Chinese yuan, or 1.19 billion U.S. dollars. The 2021 Amazon fine issued by Luxembourg's data privacy regulation authorities was 877 million U.S. dollars and was the third-biggest data breach fine as of the measured month. The 2019 fine of 575 million U.S. dollars to Equifax followed. In this incident, because of unpatched vulnerabilities, nearly 150 million people were affected, which caused the American consumer credit reporting agency to pay at least 575 million U.S. dollars.