Some of them may surprise you!
Naked Security explains:
Apart from being tech companies, what do Adobe, Dropbox, Lyft, Pinterest, Sonic, Uber, Wickr and WordPress have in common?
The answer is that privacy group the Electronic Frontier Foundation (EFF) this week awarded all of them a maximum five-star rating for disclosing, documenting and, in some cases, resisting government access to the growing volumes of data they hold on their hundreds of millions of users.
Companies awarded only four stars across the five criteria measured include Google, Apple, Facebook, LinkedIn, Microsoft and Yahoo. Below this we enter a netherworld of companies (discussed below) given lower ratings where users should, presumably, start asking questions.