Privacy International, an advocacy group, has challenged the EU’s Investigatory Powers Act, arguing that its bulk collection of email and social media data is illegal. “After a minute’s silence in memory of the victims of the attack in London on Saturday, the investigatory powers tribunal (IPT) said it was considering whether to refer the issue – concerning the use by GCHQ, MI5 and MI6 of bulk communication data – back to the court of justice of the European Union in Luxembourg," Guardian reports.