You should honestly take this post down. You've literally revealed how to gain access to their API keys, mentioned that it can be used to devestate the company and commit fraud, then just added a message in parentheses asking the reader not to do it.
This is a shitty article that isn't humorous at all. It would've been funny if you had reported it, they had fixed and you'd posted the article after. This reads like an engineer trying to get an ego boost and a pat on the back.