[dram]

So from Wikipedia, Boundless Informant uses 504 separate DNR (electronic surveillance program records) and DNI (metadata) collection sources known as SIGADs. In a 30-day period, they collected 3 billion data elements from within the US from these SIGADS.

And the PRISM document says it is the "the number one source of raw intelligence used for NSA analytic reports". Doesn't that mean that PRISM is the majority source of those 3 billion data elements?

And why did Page, Zuckerberg and Apple say they never heard of PRISM? Perhaps I am wrong but it's somewhat confusing!

[mpyne]

If 2.999 billion elements never make it into those analytic reports then it may very well be possible that of the remainder that manual systems like PRISM end up being the majority source. As you note, there are hundreds of SIGADs, of which PRISM is just one.

> And why did Page, Zuckerberg and Apple say they never heard of PRISM?

Because PRISM is the name for the NSA end of that service and associated data tools. The company end of that service would be whatever they called the system they use for FISA warrant/NSL compliance.