Q had asked about Blackberry.
Sandvine (which Snowden has been tweeting/RT about) was a Canadian co out of Waterloo, which is also where Blackberry is based.
Sandvine allowed themselves to merge with the SF deep pockets in July 2017.
https:// www.itworldcanada.com/ article/sandvine-to-lose-canadian-ceo-after-acquisition/394931
https:// www.franciscopartners.com/ team/lyndon-lyn-w-cantor?r=1200
Offices in SF and London UK.