Hardly anyone is aware, how insecure many popular Internet applications really are.
Once in a while, some 15-year-old decides that it's cool to start an email worm (often wrongly called a virus).
Sometimes, just selecting an email for viewing or deletion is enough to activate the worm on your computer, and it will send itself to all your contacts under your name.
Even worse, SirCam, a worm that went around last year, picked a random file on the harddisk (e.g. one of your Microsoft Word documents) and sent it to email addresses it found on your computer. It's quite interesting, what has been published that way.
Of course, that's just the tip of the iceberg. Imagine, what problems somebody who wants to get specifically at your data could cause you.
What do you store on your computer? Emails, chat logs, letters? Notes? Financial data and passwords? Trade secrets? What, if that ends up in the wrong hands?
Hopefully, it's clear by now that there is a problem that you should not ignore.
In contrast to many popular Internet applications, which try to give websites and email senders more and more functionality to display their content, Beonex focuses on you, the user. Functionality, which is more dangerous than useful for users, is simply disabled, so it cannot do harm unless the user explicitly enabled it.