Group Seeks Investigation of Deep Packet Inspection Use by ISPs May 16, 2019 https://www.securityweek.com/group-seeks-investigation-deep-packet-inspection-use-isps EDRi: NGOs and academics warn against Deep Packet Inspection Open letter sent to European policymakers and regulators (PDF): https://edri.org/wp-content/uploads/2019/05/20190515_EDRiOpenLetterDeepPacketInspection.pdf