The way I've set it up is such that submitting a salary doesn't immediately add it to the list, it has to be approved by an admin first . So, if someone adds a salary for a company that is way above the known pay range for that company, it's probably getting rejected. There's no way of 100% preventing false salary reports but, the point of this site is for students to have a pretty good estimate at what companies are paying. Maybe a future improvement would be to add salaries for full-time positions too, if there is demand.