Hc is monitored by both unpaid volunteers and highly trained professionals.
If you were to post in support of a national security threat you would probably be contacted quick smart, otherwise everything just goes into the usual meta data storage, every keystroke etc.
I'm pretty certain if you leave your browser open and are logged onto HC your browser is then open to whoever has the means to view it. Just as the multinational, (google, microsoft etc etc) are coerced into providing ways for metadata collection ,so is HC
