If I am on my computer at work, can my employer read my personal email on yahoo?

no. though he may be able to monitor what is on your screen at any given time. He will not be able to go back through the history, UNLESS, he has some serious technology. Such does exist. Don't threaten the president from your Yahoo account. But, your boss can't see into your email. The girl that answered the question is pulling your leg... Perhaps they can see your work email, but not Yahoo's/

very possible. If they have installed the software to do it then yes they can. And they have the right to do it if you are accessing your personal email on the company computer. I think most programs will only let them see whatever you opened or sent on the work computer, but technology is changing all the time. What is your company's policy on personal use of their computers? My work is ok with us surfing the net, etc as long as it is nothing illegal or immoral. And of course, as long as it doesn't interfere with our work duties.