Most malicious mobile programs rely on the network to spread or work. You can prevent them by controlling the network connections on your phone. One of the most effective network control tools is a firewall. By installing a firewall on your phone, you can:
- Prevent unauthorized Bluetooth or General Packet Radio Service (GPRS) incoming connections and file transfers
- Prevent Bluetooth scanners from discovering or pairing with your phone
- Prevent Bluetooth scanners from accessing any data or services on your phone
- Prevent Trojans from sending out any information from your phone
The Symantec Mobile Security for Symbian (currently in beta) provides a personal firewall for Nokia Series 60 phones. You can download it from https://www-secure.symantec.com/public_beta/. Via the firewall, you can specify several different levels of communication constraints.
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