[garbageseeker]

If the company knew about his background and simply did nothing about it they will be both civil and criminal liable, I think.

[cambodia]

I live in Cambodia and have also lived in Thailand. From what I know about the teaching profession in SE Asia, most instructors are only asked to provide a resume (often doctored) and have native English speaking abilities - I have never heard of a background check, except for those involved with the government, foreign business companies and some NGOs.

Now I wouldn't stereotype all overseas instructors as being like this parasite, though I'm not the first to wonder about some of their backgrounds...