The DEA program is pretty shocking and a great example, thanks for sharing!

The second one sounds more like an interdiction program, where vulnerabilities are inserted into the devices (this is a thing that was in the Snowden documents). The document gives no details. The highlights on the side are from an NYT journalist, not source material.

I disagree that the last example is an example of that. It's still unclear what the scanning was doing.

The Yahoo thing is a huge deal. Email providers do interception all of the time and have strong procedural controls.

The idea that people could bypass those processes and controls is a tremendous liability that no board would ever approve.