Europol and the Andorran Police have signed a Memorandum of Understanding connecting Andorra to Europol’s Secure Information Exchange Network Application (SIENA), further strengthening international law enforcement cooperation.
Through this connection, the Andorran Police will be able to securely share law enforcement information with Europol and a wide network of European and international partners.
This Memorandum of Understanding builds upon a Working Arrangement signed between Andorra and Europol in 2021.
Joining a community of over 300 liaison officers
The agreement will bring Andorra closer to one of Europol’s greatest strengths: its international law enforcement community.
More than 300 liaison officers representing over 50 countries and organisations currently work side by side at Europol’s headquarters in The Hague. They provide a direct link between their national authorities and law enforcement partners across Europe and beyond, helping information and intelligence move quickly across borders.
Once connected to SIENA, the Andorran Police will have a secure route into this network, allowing it to communicate directly with law enforcement partners represented at Europol, including bilaterally and without Europol’s direct involvement.
This international network of liaison officers has become a cornerstone of Europol’s approach to cross-border police cooperation, bringing law enforcement authorities together and helping connect investigations across countries and jurisdictions.
SIENA: secure communication for law enforcement
The swift and secure sharing of information is at the heart of international police cooperation. Europol’s SIENA provides a dedicated platform designed specifically for law enforcement to communicate and share sensitive operational and strategic crime-related information securely.
Launched in 2009, SIENA has become a key channel for law enforcement cooperation in Europe. Alongside national authorities, it is used by a growing number of specialised law enforcement networks and units working in areas ranging from cybercrime and financial investigations to fugitive investigations and counter-terrorism.
Today, more than 3 800 competent authorities from EU Member States and third parties are connected to SIENA. In 2025 alone, 2.1 million messages were exchanged through the platform – the highest number recorded to date.