Abstract   In recent years, the reinforcement of security policies alongside the expansion of information systems for law enforcement and crime prevention entailed growing restrictions to personal data protection principles and procedural rights in the European Union. This paper seeks to elucidate this trend, while matching it with an EU institutional discourse based on balancing and proportionality. Indeed, EU institutions regularly present security measures and fundamental rights as somewhat symmetric values to be easily conciliated through balancing and proportionality. Considering the raising of the protection of personal data to the status of a fundamental right by the Charter of Fundamental Rights, its effect on a possible rebalancing of the values at stake is discussed. Yet, we conclude, for the time being, the potential for just and democratic solutions provided by the ideas of balancing and proportionality does not appear to be properly used.