Accountability Principles for Artificial Intelligence

The challenge for internal security practitioners including law enforcement and the justice sector is to determine how to capitalise on the opportunities offered by Artificial Intelligence (AI) and Machine Learning to improve the way investigators, prosecutors, judges or border guards carry out their mission of keeping citizens safe and rendering justice while, at the same time, safeguarding and demonstrating true accountability of AI use towards society.

The AP4AI (Accountability Principles for Artificial Intelligence) Project addresses this challenge by creating a global Framework for AI Accountability for Policing, Security and Justice.

What is AP4AI?

The Accountability Principles for AI (AP4AI) Project develops solutions to assess, review and safeguard the accountability of AI usage by internal security practitioners in line with EU values and fundamental rights. AP4AI means a step-change in the application of AI by the internal security community by offering a robust and application-focused Framework that integrates security, legal, ethical as well as citizens’ positions on AI.

The CC4AI tool

Building on the foundations of AP4AI, we have created a web-based tool to support internal security practitioners assess compliance of their AI systems with the requirements of the AI Act. This will allow users to evaluate whether, existing or future applications, meet the criteria set by the new regulatory framework.

The functionality and content of the tool has been developed in partnership with EU JHA agencies and evaluated by several European law enforcement agencies active in this field. Since the regulation is still under negotiation, this tool will be expanded and updated once the AIA has been adopted.

Access to CC4AI, will be offered freely to internal security agencies. If your agency or organisation is interested in the tool, please contact Europol Innovation Lab to gain access to the evaluation version of the tool.

The AP4AI principles

AP4AI puts forward 12 Accountability Principles to define the requirements that need to be fulfilled to assure AI Accountability in the internal security domain. The 12 principles are the foundation on which all other AP4AI activities and solutions are built.

The EU AI act

The EU, recognizing the transformative potential of AI, has proposed a legal framework to balance innovation with the protection of fundamental rights and societal values. This legislative proposal is referred to as the Artificial Intelligence Act (AIA).



AP4AI is an ongoing research project. This website and its content are developed jointly by several parties in order to support security and judiciary community practitioners. Outcomes, opinions, critical reflections, conclusions and recommendations on this website and related reports, publications, tools and presentations represent the output of collaborative effort. They do not necessarily reflect the individual views of participants of the AP4AI project, Europol, CENTRIC, FRA, Eurojust, EUAA or CEPOL. AP4AI has received ethics approval by the university ethics board of Sheffield Hallam University, where CENTRIC as academic lead of the AP4AI project is located. AI legal regulation is in the process of development: adherence to these non-binding principles cannot replace compliance with legal rules (e.g. national legislation) nor do the project partners replace the role of a regulatory authority in relation to use of AI for internal security purposes. This website contains links to other websites. These are not under the control of the partners to AP4AI and are not endorsed by the project. By clicking on a link and navigating on a separate website, you may agree to the terms and conditions of that website.