I saw someone on here had a program that went in your profile and rewrote all posts with garbage data before you deleted it. Like for Facebook, Twitter, Discord

I saw someone on here had a program that went in your profile and rewrote all posts with garbage data before you deleted it. Like for Facebook, Twitter, Discord, etc. That way you know their database is filled with junk data. I'd really like to know what that was again so I could peak at it in case I ever wanted to do that.