Download polkadot-js/phishing and add denied hosts to a subreddit automoderator.
If you wish to use this fork this repo and add the following repository secrets in the "repo secrets" settings on Github:
praw_client_id
praw_client_secret
praw_user_agent
praw_username
praw_password
subreddit
You will need to have created a Reddit "script" app here for the first two.
The user must be a moderator of the subreddit. Subreddit is a string like "polkadot_market".
You also need to add these two lines somewhere in your existing automoderator config:
# PHISHBLOCKBEGIN
# PHISHBLOCKEND