Is Google Talk secure [duplicate]

"Google Talk uses the XMPP (Jabber) protocol, with SSL encryption layer - the same that's used for HTTP (""HTTPS"") and many other programs.

<edit> But as Wil says in his answer, some companies may have SSL proxies installed, and monitor all communications that way. (But I doubt that those proxies check anything other than HTTPS on its usual port.) </edit>"

If someone in your organization truly wants to know what you're doing on your computer, they'll probably slap a keylogger on it anyways. Protocol security is moot at that point.