They're working on scanning IPv6 as well. They got in trouble a few years back after they were observed harvesting IPv6 addresses by running a public NTP server[1].
It used to be that Kali would start a ton of services at boot and open those ports up to the LAN interface. Stuff like Postgresql that you probably don't want to expose any wider than localhost.
It also defaulted to running as a root user for everything, but they recently changed that.
There's nothing definitive that says they paid the ransom or obtained the decryption key from the attackers. Rumors on Twitter say that they're rebuilding services from backups and slowly getting things back online
If you own buckets personally or at work and want to scan them from an outsider's perspective, you can use S3Scanner [1]. Disclosure: I wrote it and there's a major re-write coming soon(tm).
I've used MailStore Home[1] for a few years and I really like it. It allows me to search across all of my mailboxes, even ones that have since been shutdown, for emails that I only remember a partial subject for.
Watching signal strengths is all well and good, but you need historical data to compare to. This is a viable option for a few sites (maybe near where you live), but not an option when you're on the go.
[1] https://arstechnica.com/information-technology/2016/02/using...