Helium is a crypto currency, Helium Miners are a some-kind of wifi router and you get paid In Helium installing a wifi router on any network you own sharing your bandwidth and depending on the amount of users/traffic that you generate or serve is how much you get paid.
Of the 70+ organizations with Meraki that we manage just today we found 3 devices (the where all in an executive offices kind of business) so not too much of a scare but at the same time that was discovered i had members in one of the locations complaining of dropped zoom calls so no clue if it was related or not.
Also generated a concern that if someone adds it to a secure network (lets say Law Office or other) what guarantees are there that the said user can’t get in.