Re: Snooping data
What are the rules for data acquistion in FISA?
You may recall from Mr Snowden that the collection is quite separate from selection.
All metadata from anywhere is collected. That means everything you can imagine, and more. Phone calls, web site commentary, emails, spam rejections, twitter trolling, internet port scans, and so on.
The intelligence agencies and others (including executive branch, not just IC people) have access and use the XKEYSCORE system to "select" from the "collection." And they infer what they infer from the metadata thus selected and shown to them.
This very posting to a US-based server (served via CloudFlare) has metadata which will be collected. Since it has a fairly distinct data size (not content, just size), the FIVEY folks could probably trace the metadata with 99% certainty to the words of this comment, based on it's length.
If they look. Since there are so many much more interesting comments and commentards here on El Reg, I'm probably safe.