# Commission Implementing Decision of 1 July 2011 amending the SIRENE Manual (notified under document C(2011) 4574) (Only the Bulgarian, Czech, Dutch, English, Estonian, Finnish, French, German, Greek, Hungarian, Italian, Latvian, Lithuanian, Maltese, Polish, Portuguese, Romanian, Slovak, Slovenian, Spanish and Swedish texts are authentic) (2011/406/EU), Division: Security of the system

Extent: E+W+S+N.I.

The principles underlying the security of the system are set out in Article 118 of the Schengen Convention.
The SIRENE bureau system should have a back-up computer and data base system at a secondary site in case of a serious emergency at the SIRENE bureau.

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Source: https://www.legislation.gov.uk/eudn/2011/406/annex/division/1/division/1.3/division/1.3.3/division/2 (the official version)
Page: https://openlegislation.uk/eu-decision-2011-406/annex/division-1/division-1.3/division-1.3.3/division-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.