Re:NordVPN confirms it was hacked
by pbhjpbhj on Monday October 21, 2019 @04:39PM
(#21317048)
By looking at side-channel data it was possible to correlate the page being viewed on SSL, IIRC researchers could calculate the page viewed about 70% of the time.
I misremembered, it was about 90% -- https://scirate.com/arxiv/1403.0297.