Someone didn’t properly set the httpcookies domain for our staging and production websites. Yep, this was a C#/.NET site. The cookie domain for the staging site was set to the production domain instead of the staging domain (which was a subdomain). So if someone logged into the staging admin, that would also grant them access to production admin if they also had an account in the production site.

The staging site technically had an additional login to enter the site, but the username and password weren’t too hard to guess. It was like that for years until I was hired to be an in-house dev (the role was previously outsourced to a software development company).

The admin side of the website wasn’t very sophisticated. But there was enough personal identifying info for a hacker to do something with.

I don’t know how they weren’t hacked yet. Honestly, I’d tell my employer to go back to that software agency and ask for a refund and cite the shotty work.