Right to The Protection of Personal Data and The Principle of Proportionality

By way of example; the Klass v. Germany case concerned the legitimacy of secret surveillance. The Strasbourg Court accepted that the German measures fell within the national security exception, since democratic societies found themselves threatened by highly sophisticated forms of espionage and by terrorism and needed to undertake secret surveillance to counter such threats.(23)…

In the S. and Marper case, the Strasbourg Court accepted that a system of retaining DNA samples and fingerprints served the aim of preventing crime, although it found that the scheme in place in the United Kingdom was too far-reaching and disproportionate.(24)…