To sum up the updates in the article

  - IDMerit asked the security researcher for proof, the researcher asked for money first, so IDMerit balked
  - IDMerit basically says they have no proof they were hacked, so they weren't
  - The researcher is a freelancer... for CyberNews...

Even if somebody followed up with IDMerit, it's likely they will say they are not affected. The security researcher is probably the only person who could prove whether they were or not vulnerable, at this point. If they don't come forward, we can only assume they weren't vulnerable, but we don't know. This is a good lesson for responsible disclosure in the future.

...also, this is yet another example of why we need a regulated Software Building Code, with penalties for not conforming to it. If somebody is found to be hosting a public Mongo instance with no authentication, it should be reported to a state or federal agency, so that real penalties can be applied, the way they are for other code violations. And they shouldn't have been allowed to launch with that in the first place. It shouldn't be up to random "security researchers" to police businesses.