I've seen this happen. Some of my colleagues had written bad reviews for a company I had worked at. My employer found out eventually. They ended up flooding gla

I've seen this happen. Some of my colleagues had written bad reviews for a company I had worked at. My employer found out eventually. They ended up flooding glassdoor with fake positive reviews, down to changing tone and typing style between posts to throw people off. I would take glassdoor with a grain of salt.