An Absurdly Basic Bug Let Anyone Grab All of Parler's Data
wired.com
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Being a public website is not a "bug".
Twitter goes through lengths to stop someone from downloading all its content because Twitter sells that sort of access. They are motivated by financial incentives, not a desire to be 'competent' developers, or because integer IDs are some kind of amateur logic.
Being able to see deleted posts and download deleted videos is a bug.
I consider a bug also not stripping metadata from videos and images on upload.