The virus and worm threat has reached the mobile world, and like on your computer there are a few things you can do to prevent an attack:

How can malware get on my phone?

Via SMS, as an internet link

Via Email, as an attachment or a link

Via Bluetooth, as a file or a internet link.
Via MMS, as file or an internet link that you click.

As an application you download from somewhere and think it is something completely different (so-called Trojan horse). This, of course is the most insidious way, because since you think it is an application that you want to install and run, you´ll do it without having a clue that you are infecting your phone!

None of the methods above infect your phone immediately! They require you to open a link and save and execute a file.

As a general rule, try to be more suspicious of links to open (even if you know the sender!), and be wary when installing applications. Make sure the source is reliable. In system security circles, people shouldn't ask themselves "Am I being paranoid?", they should ask themselves "Am I being paranoid enough?"

Within the Application Manager you can select whether Symbian software that has no verified digital signature can be installed or not. It is recommended that only software with a verified digital signature be installed.

Of course these Guidelines don´t ensure 100% immunity against any kind of malware, but they´ll go a long way towards keeping your phone safe.

If you have any questions regarding this, feel free to ask them within the board!

Thanks to user grschinon for his collaboration.