400
Over 40,000 admin portal accounts use 'admin' as a password
(www.bleepingcomputer.com)
This is a most excellent place for technology news and articles.
Majority of those accounts are probably used on portals for printer/copiers.
And no doubt for a bunch of off-brand internet-connected cameras. Or, those are just totally open to the whole world. Glad to see Shodan is still up... Though I'd hoped some mfg would change their practices once it became obvious no one changes the default.