Last week, researchers at Citizen Lab discovered that Sandvine’s PacketLogic devices were being used to hijack users’ unencrypted internet connections, making yet another case for encrypting the web with HTTPS. In Turkey and Syria, users who were trying to download legitimate applications were instead served malicious software intending to spy on them. In Egypt, these devices injected money-making content into users’ web traffic, including advertisements and cryptocurrency mining scripts.
These are all standard machine-in-the-middle attacks, where a computer on the path between your browser and a legitimate web server is able to intercept and modify your traffic data. This can happen if your web connections use HTTP, since data sent over HTTP is unencrypted and can be modified or read by anyone on the network.
The Sandvine middleboxes were doing exactly this. On Türk Telekom’s network, it was reported that when a user attempted to download legitimate applications over HTTP, these devic