You can add ShieldyBot. It asks new users to perform a set of actions within a specified period. You'll have to set the bot as an admin, and the bot will take care of kicking out those spammers. Source: about 2 years ago

You can just invite ShieldyBot to your group and give it Admin access. That's pretty much it. It's a pretty comprehensive bot. If you're worried about the public infrastructure you can just clone the repo hosted on Github and run it locally on your server. You just have to register it with The Bot Father. Source: about 2 years ago

Nothing to add, except that if you are updating multiple sites on a regular basis, check out https://infinitewp.com/. Source: over 1 year ago

If you have lots of sites, and you need a single dashboard giving direct access to all of them, take a look at InfiniteWP or ManageWP. Source: over 2 years ago

Https://infinitewp.com/ have used for several years now. Source: almost 3 years ago

If you are managing multiple unrelated sites check out InfiniteWP. The free base set of tools will let you handle all updates across them quite easily. Source: about 3 years ago

I bought a lifetime license to InfiniteWP maybe 6-7 years ago. https://infinitewp.com/. Source: about 3 years ago