A big problem cropping up on Itch currently is that of scammers/bootleggers, especially in the NSFW creative community; there was the case of the Dieselmine Scammer, who was outed by HentaiWriter on Discord, the Dottoru Scammer, the Ses Scammer, and the Ru-Item Scammer who is still currently active, alongside many others who have yet to be caught out.
So how should Itch staff and moderators go about fixing this issue? My main suggestion would be research,research,research.
A lot of devs usually have a pre-existing form of communication; JP Devs have Ci-en, EN devs have patreon and everyone who is trying to grow has a twitter.
I propose that games (specifically those that have a former presence on other storefronts) be held in confinement by itch until contact is made with the dev through a reliable network.
If it is them putting their game up, everything is peachy keen. throw it up on itch.
if it's not, the dummy account is banned. (and maybe do more harsh punishments; IP ban, MAC ban, etc?)