"Chances are good that you have more control over the computer you type your messages on than some server" Wow really? I don't think those chances are good at

"Chances are good that you have more control over the computer you type your messages on than some server" Wow really? I don't think those chances are good at all.. I'm not sure how often it happens that a running server is tampered with physically but I don't think that chance is as high as my client system running any malware beyond my control.