Hell, anybody can buy one. Just go to http://www.spectersoft.com/ and you can purchase e-blaster. It works, and it's undetectable by most scanning programs. I know, because I've used it. Oh, and even if a company doesn't have you sign something when you are hired, they can easily get around that by putting a quick message up when you log in to the computer. Something like, "This computer is property of x company and use is subject to monitoring. All persons agree to being monitored by use of this computer." That's it, you've just given them permission to monitor you.