It’s recently come to my attention that FTP (file transfer protocol) can cause some serious security concerns when developing and maintaining a Web site. Apparently, when files are uploaded or downloaded via FTP, all ASCII files are transferred as plain text. Therefore, anyone trying to spy on you through your FTP connection can easily see the content of any files you upload (including all of your passwords, etc. that you might have embedded in your files). Apparently, even the username and password you use to login to your FTP server are sent as plain text, making it rather easy for someone to pick those up while spying on you, as well.