[tyingq]

Apparently, their name is "NSO Group". So I agree with many of your points.

Or we could all just simultaneously guess what popular 3 letter NSO acronym it really is?

https://acronyms.thefreedictionary.com/NSO

Seriously, that's a lame answer. There's almost certainly another "NSO" company with more past or future notoriety/revenue/whatever. Why be ambiguous when that's not actually their name? The name is , "NSO Group".

[jlgaddis]

This entire thread could have been avoided by you simply reading the first sentence of the article. No Google searches or long discussion needed.