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■ Browser security
Security features may be required for some services,
such as online banking or shopping. For such
connections you need security certificates and possibly
a security module, which may be available on your SIM
card. For more information, contact your service
provider.
Security module
The security module improves security services for
applications requiring a browser connection, and allows
you to use a digital signature. The security module may
contain certificates as well as private and public keys.
The certificates are saved in the security module by the
service provider.
To view or change the security module settings, select
Menu > Settings > Security > Security module sett..
Certificates
Important: Even if the use of certificates
makes the risks involved in remote
connections and software installation
considerably smaller, they must be used
correctly in order to benefit from increased
security. The existence of a certificate does not
offer any protection by itself; the certificate
manager must contain correct, authentic, or
trusted certificates for increased security to be
available. Certificates have a restricted
lifetime. If "Expired certificate" or "Certificate
not valid yet" is shown even if the certificate
should be valid, check that the current date
and time in your device are correct.
Before changing any certificate settings, you must
make sure that you really trust the owner of the
certificate and that the certificate really belongs to the
listed owner.
There are three kinds of certificates: server certificates,
authority certificates, and user certificates. You may
receive these certificates from your service provider.
Authority certificates and user certificates may also be
saved in the security module by the service provider.