Opensource list of known malicious bots

After taking a quick look around I didn't see an existing
opensource list of known malicious bots.

I found this list which is helpful for non malicious web scrapers.

I am curious if anyone knows about an existing opensource list. This is
exactly the kind of information which should be freely available
on the internet.

If there aren't any existing services, I would be happy to make an API
and have it run either on donations or a model where the costs are
equally distributed accross all paying members.