s as a barrier to prevent unauthorised mobile PCs that use hotspots access to a mobile computer through the hotspot connection. Information received from the access point will be permitted or blocked depending on configuration of the firewall. Wireless network traffic should be assigned an "untrusted" status when using a public access point. Protect files and folders on the Using the privacy mechanisms available in the mobile device, using PC operating system will ensure that files passwords or encryption. and data are protected even if an attacker Disable file sharing. manages to make an unauthorised connection to the mobile device. Protect data transmitted to the Confidential data, including e-mails, should be access point encrypted before transmission, or a secure socket layer (SSL) e-mail service can be used. Disable the wireless NIC when Turning off the wireless NIC radio when not in not in use use will remove a potential attack route and conserve battery power for mobile devices. Beware of the surveillance risk Be vigilant when entering PINs or passwords in in public places public places to ensure that confidential information is protected from surveillance. Keep operating system and Security patches should be downloaded regularly security software up-to-date to ensure that all software contributing to security - operating system, firewall and anti-virus software - is updated to combat all known threats. Wireless LAN Security Web sites and secure on-line services such as e-mail that use SSL security can be identified by the https:// URL prefix and by a padlock icon displayed in the browser window. The digital certificate being used by a secure web site or service provider can be checked by double clicking the padlock icon, which will display certificate information such as the name and e-mail address of the certificate owner, certificate usage and validity date, and the web site address or e-mail address of the resource using the certificate. The certificate ID of the person or entity that certifies the inf