Tell HN: Interviewed with Triplebyte? Your profile is about to become public
FYI because of this hacker news post, I just wrote Triplebyte as follows:  I saw a post on Hacker News that Triplebyte is going to be
  posting to the interenet [sic] the profiles of people who
  have interviewed with you.  I do not give you permission
  to post any information about me and explicitly request
  that you do not.  Please acknowledge this request.

The reply offered to delete my account, and I said yes.  They replied that they had deleted my account.