CERN’s Access Control Centre (known by its French acronym, CSA), which is managed by the Site and Civil Engineering department’s Security Service, can now be reached at a single number: 76666. (The CSA’s old numbers – 78877 and 78878 – are automatically redirected to 76666.)

The CSA is open 24 hours a day, seven days a week, and is there to answer all your security-related questions, from how to access CERN, car parking, roadmarking requests, lost property and suspicious or unattended packages to antisocial conduct, criminal acts, suspicious behaviour, etc.

You can also contact the CSA by email at the following address: access.surveillance@cern.ch.

Reminder: In the event of an emergency or to report an accident, call the CERN Fire and Rescue Service on 74444.