We hired him for two weeks to test him as per our normal trial period. We paid him and let him go. We made the mistake of not taking away his access to our Github and servers. So he went to our Github and did as much vandalism as he could, taking many hours for us to repair. He also went to our servers and deleted everything, causing further damage.
We've complained to the management at Guru.com and Github about this.
More data about this guy:
Email: email@example.com, firstname.lastname@example.org