I think some people in this thread want to be a bit too "absolutist" about it. Everyone's servers were exposed to heartbleed, spectre, meltdown, etc so the absolutists would apparently want the whole internet deleted.
Edit: It would be helpful if down-voter could explain (I might learn something).
Would you like it if someone involved you in adjudicating potentially illegal (under CFAA & others) without your consent?
This is clearly not a white hat hacker looking to teach people lessons about security. If it were, they could have furnished a list to the major cloud providers of broken instances and given them time to notify and remediate.
No just my Webserver/HAProxy. The difference is, don't expose services that are not meant to face the Inet directly.
Production-Type Webservers are, SSH, VPN, HAProxy etc are.
Databases, devel-webservers, NFS, Samba are not!
Sure even the best hardened Service can have vulnerabilities, but that's how life is, better have a door with a key than one without, even when someone is capable to open your door with a Lock-pick.
I did not (in the slightest) suggest that people should do this. I was commenting on the "free-ness" of the lesson (read the comment I was replying to). It could have been more "free" with a little more effort. Straight-up deletion wasn't the only option.
No but a good one.
>It could have been more "free" with a little more effort.
Even White-Hats work not for free (for companys). Don't build Cars if you don't know how a break work, don't build IT-Services if you have no the slightest idea how to secure them.