A couple of days ago I made a post, with my main account, of the new bots. As far as I know, they all seem to follow the same pattern so far:
They follow first and right away reblog a publication you made.
The reblogs tends to be old publications.
The publications are always posts you made, never reblogs (even if you added something) or asks/answers.
All of them reblog the same publication, sometimes they use two or three that relate to each other (mines are informative posts about the terrorists attacks from 2017).
All of them reblog the same publications in the same order (I always get reblogged after some post with gifs about a woman fighting a man).
They don’t have a header and usually, they use a female photo as a profile picture but sometimes they have a default tumblr photo.
They don’t add anything to your post, they also do not tag anything.
They don’t send DM or asks.
Their names tend to look like human usernames (maybe they use inactive accounts or something like that).
The topics they reblog don’t seem to have a relation with each other, they only seem to fill their accounts with posts .
Apart from that, I can’t find any more patterns or relations with each other neither I can find why they use that modus operandi. As other user commented in a post (not sure if they are comfortable with being tagged) they seem to want to imitate actual blogs.
My course of action is to block them as I notice them, I wanted to report them for spam but I don’t think they follow the criteria for that so I end not reporting them. At first, I thought it was the own staff doing that to get more activity to the web but IDK anymore. Anyway, I really hope @staff starts doing something.