Facepalm: It probably happens more often than reported. An employee gets fired. The company forgets to take proper precautions. The disgruntled worker then exacts revenge by [insert unethical or illegal act]. The former employee’s actions are inexcusable, but whose fault is it when the employer could have taken simple precautions ...
See Details: Former admin borks ex-employer's network to try to get his job back with a raise