Data and big data: the new legal obligations for businesses and the essential role of a CNIL lawyer

The big data revolution brings with it new legal obligations, particularly when personal data is being processed.

In an economic world undergoing rapid digital transformation, data has become the fuel of innovation and the engine of growth for many organisations. Businesses collect, analyse and exploit ever-larger volumes of data to optimise their operations, personalise their offerings and develop new business models.

However, this big data revolution comes with an increasingly demanding legal framework, particularly when this data relates to identified or identifiable natural persons.

Faced with this growing regulatory complexity, the involvement of a CNIL lawyer becomes a major strategic asset for navigating this demanding legal environment while fully exploiting the potential of your data.

If you would like to engage a CNIL lawyer, contact me!

The evolution of the legal framework: towards stronger data protection

The regulatory landscape governing the use of data has undergone major transformations in recent years, with the adoption of foundational texts that redefine the obligations of businesses.

From the GDPR to the AI Act: an ambitious European framework

The General Data Protection Regulation (GDPR), which came into force in May 2018, is the cornerstone of this new regulatory era. This text revolutionised the approach to data protection by establishing fundamental principles such as accountability, transparency, data minimisation and privacy by design.

More recently, the European Union has adopted several sector-specific regulations that complement this framework: the Digital Services Act (DSA), the Digital Markets Act (DMA) and the Artificial Intelligence Regulation (AI Act), which impose specific obligations regarding algorithmic processing, transparency and risk assessment.

The expertise of legal counsel proves particularly valuable in this context of overlapping rules. A CNIL lawyer has a command of these various bodies of law and their interactions, enabling you to identify the provisions applicable to your specific activity and to anticipate changes in regulatory constraints.

The specific French constraints: the central role of the CNIL

In France, the National Commission for Information Technology and Civil Liberties (CNIL) plays a particularly active role in interpreting and applying the GDPR. It regularly publishes guidelines, recommendations and reference frameworks that clarify the practical arrangements for achieving compliance in different sectors or for different types of processing.

In addition, the CNIL has considerably stepped up its enforcement and sanctioning activity. In 2023, it imposed record fines reaching several tens of millions of euros, particularly targeting projects involving large-scale data processing or innovative technologies such as artificial intelligence.

The strategic mediation of a lawyer proves decisive in correctly interpreting these sector-specific positions taken by the CNIL and translating them into operational measures suited to your business context. Their expertise enables you to anticipate the specific expectations of the French regulator and to prepare effectively for any audits.

The sectors particularly affected by the legal challenges of big data

While all organisations are affected by these regulatory developments, certain sectors are subject to particular scrutiny owing to their intensive use of data or the sensitivity of the information they process.

The healthcare and medical research sector

The field of healthcare represents particularly fertile ground for big data applications, with considerable potential for improving care pathways, medical research and public health. Artificial intelligence projects applied to medical diagnosis, clinical studies based on the analysis of massive datasets, and telemedicine solutions are all promising innovations.

However, these initiatives involve the processing of health data, which is considered particularly sensitive under the GDPR and subject to specific rules under French law (notably through the Health Data Hub and the National Health Data System).

The tailored legal support that a CNIL lawyer can offer is crucial for navigating this complex framework. They help you determine the legal regime applicable to your specific project (research, care, evaluation of professional practices), identify the competent authorities (CNIL, CPP, CESREES) and assemble the regulatory files needed to obtain the required authorisations without compromising your innovation objectives.

Digital marketing and targeted advertising

The digital marketing sector is being profoundly transformed by the exploitation of massive datasets, enabling ever-finer personalisation of advertising messages. However, this development comes with a strengthened legal framework, particularly regarding cookies and other trackers, profiling and automated decision-making.

The planned phase-out of third-party cookies, the growing restrictions on tracking technologies and the requirement for explicit and informed consent are disrupting established models and forcing players in the sector to rethink their strategies.

The forward-looking vision of expert legal counsel represents a considerable asset in this shifting context. A lawyer helps you design data collection and exploitation strategies that comply with current and future regulatory requirements, while preserving the performance of your marketing campaigns. They also support you in setting up effective consent mechanisms and in drafting transparent privacy policies.

The financial and insurance sector

Financial institutions and insurance companies are at the forefront of big data exploitation, whether for risk assessment, fraud detection, process automation or the personalisation of offerings. These innovations are, however, accompanied by particularly strict regulatory requirements.

Beyond the GDPR, these players must comply with sector-specific regulations such as the MiFID II directive, which imposes specific obligations regarding transparency and investor protection, as well as the European Banking Authority's guidelines on cloud outsourcing.

The sector-specific expertise of a CNIL lawyer is a performance lever in this highly regulated environment. They help you reconcile technological innovation and regulatory compliance by devising robust legal structures that secure your data projects without hindering their deployment. Their in-depth knowledge of the positions of the various regulatory authorities (CNIL, ACPR, AMF) enables you to anticipate regulatory developments and adapt your strategy accordingly.

Let's discuss your needs for 15 minutes!

The specific legal challenges of artificial intelligence

Artificial intelligence currently represents the most advanced frontier of massive data exploitation, with revolutionary applications but also unprecedented legal and ethical challenges.

The new challenges posed by the European AI Regulation

The adoption of the European Artificial Intelligence Regulation (AI Act) marks a decisive step in the regulation of these technologies. This text, which will come into force progressively through 2026, establishes a graduated, risk-based approach:

• AI systems presenting an unacceptable risk are prohibited (social scoring, subliminal manipulation systems, etc.)
• High-risk systems are subject to strict requirements (risk assessment, human oversight, transparency, etc.)
• Limited-risk systems must comply with certain transparency obligations
• Minimal-risk systems benefit from a lighter regime

The strategic planning facilitated by a legal expert becomes essential for anticipating the impact of this regulation on your AI projects. A lawyer helps you legally classify your technological solutions, assess their level of regulatory risk and put in place the appropriate compliance measures. Their involvement makes it possible to incorporate legal requirements from the design phase of your systems, thereby considerably reducing subsequent compliance costs.

The balance between innovation and protection: the case of LLMs

Large language models (Large Language Models or LLMs) such as those underpinning the latest generation of conversational agents perfectly illustrate the tension between innovation potential and legal risks.

These technologies raise complex questions regarding copyright, liability for generated content, algorithmic transparency and potential discrimination. The CNIL did indeed publish a specific position on this subject in 2023, advocating a cautious and documented approach.

The in-depth legal support offered by a CNIL lawyer enables you to deploy these innovative technologies while keeping the associated risks under control. They develop with you a tailored compliance strategy, including impact assessments, data governance policies and quality control mechanisms. Their expertise also helps you structure your contractual relationships with your technology suppliers to legally secure the use of these powerful tools.

How does a CNIL lawyer secure your data projects?

Faced with these complex legal challenges, a data law lawyer brings considerable added value at every stage of your projects involving large-scale data processing.

Preliminary analysis and risk anticipation

Even before launching a data or big data project, the involvement of a CNIL lawyer makes it possible to assess its legal feasibility and to anticipate the applicable regulatory constraints.

This preliminary analysis covers various dimensions: lawfulness of the envisaged data collection, identification of the appropriate legal bases, assessment of potential international transfers, anticipation of the required administrative formalities, and analysis of the impacts on the rights and freedoms of the data subjects.

The holistic vision of legal counsel enables you to identify the key points of concern from the initial design phases, thereby avoiding costly redirections after deployment. This preventive approach turns regulatory constraints into opportunities to improve your project, by strengthening its robustness and its social acceptability.

Establishing appropriate governance

The compliance of data projects necessarily requires the establishment of robust governance, clearly defining the roles and responsibilities of each party involved in the data lifecycle.

This governance includes designating the data controllers and processors, clarifying relationships with technology partners, developing validation and control processes, and documenting the choices made in order to demonstrate compliance (accountability).

The legal architecture established by a CNIL lawyer forms the foundation for the sustainable and secure exploitation of your data. Their command of the various possible contractual arrangements (joint controllership, processing, international transfers) enables you to optimise the allocation of responsibilities while preserving your access to the technological resources required for your project.

Ongoing operational support

Beyond the initial analysis and the design of governance frameworks, a lawyer supports you throughout the lifecycle of your data projects to ensure their compliance over time.

This support includes drafting and updating compliance documents (record of processing activities, impact assessments, internal policies), managing relationships with the regulatory authorities, training teams on the legal challenges of data, and adapting your practices to regulatory and case-law developments.

The ongoing support of a legal expert enables you to maintain a high level of compliance without sacrificing the agility needed for innovation. By keeping you informed of the regulatory developments relevant to your sector and by proposing proportionate adjustments, a CNIL lawyer helps you sustain your investments in data technologies while minimising the associated legal risks.

I want reliable legal documents!

Making the law a performance lever for your data projects

In an environment where data constitutes a major strategic asset but also a significant source of legal risk, the support of a CNIL lawyer represents far more than a mere compliance exercise: it is a genuine lever of performance and differentiation.

By turning regulatory constraints into opportunities to improve your processes, by legally securing your technological innovations and by helping you build a relationship of trust with your clients and partners, a data law lawyer directly contributes to the creation of value within your organisation.

Our firm of CNIL compliance lawyers has sharp expertise in supporting data and big data projects, covering the full range of legal issues associated with the exploitation of massive datasets. Whether you are an innovative startup developing solutions based on artificial intelligence, an established company wishing to make the most of your data assets, or a public-sector organisation engaged in an open data initiative, our experts support you in making the law an ally of your digital transformation.