KEY POINTS
  • The European Court of Justice (ECJ) has ruled that member states cannot collect mass mobile and internet data on citizens.
  • It said forcing internet and phone operators to carry out the "general and indiscriminate transmission or retention of traffic data and location data" is against EU law.
  • The ruling is in response to several cases brought about by Privacy International and La Quadrature du Net.

LONDON — The top court in the European Union has delivered another blow to governments seeking to keep tabs on citizens through controversial spying techniques. 

The European Court of Justice (ECJ), the EU's highest legal authority, ruled Tuesday that member states cannot collect mass mobile and internet data on citizens.