You can manipulate post on these forums without being logged in.

You do not need to be logged in to upvote.
You can delete cookies and upvote again.
You can use different browsers and upvote.
Same on moblie.

If you could please look into making it just a bit harder than opening incognito to do vote manipulation - it is currently VERY easy to manipulate votes.

While we’re at it -
Post cannot be editted after submitted.
If you mark a post “Bug Report” and you meant it to be “Feedback”, you cannot go back and modify it.