Yahoo has two step authorization .. so does Google and Microsoft and many others.. pretty simple, they need your cellphone or computer to use your login. I don't even use a yahoo password and cancelled my secret questions... feel pretty safe. Yahoo biggest problem I think might be the 'hack' stole the users secret questions... you need to look at those secrets and try not to ever again have the same first car, or same mothers maiden name or first dogs name at every site you might have an account - not just at yahoo. These intrusions happened in 2013 & 2014, if nothing has happened by now... will it in future ? I like yahoo email, probably had account there since middle 90's - its not my main account but it has unlimited throw away account names in the security section which come to the same inbox that I use often so I don't get much spam from the contests or whatever... if I do get spam I know where it came from and can delete that email-name I made.

I was recently notified if the breach in houzz and that my info is now being used on the dark-web. how can I delete my account as i see no way if doing it in my settings

If they are using the app it's on the right. Mary Open the Facebook app. Tap the three lines towards the right of the top navigation bar. Scroll down and tap Settings & Privacy Tap Settings from the expanded menu. Scroll down and tap Account Ownership and Control.

I don't see "delete account" anywhere. I see "Your Houzz" then I see "Edit Profile and Settings." The menu there is on the right and there is no "delete account" choice.