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■ Cache memory
A cache is a memory location that is used
to store data temporarily. If you have
tried to access or have accessed
confidential information requiring
passwords, empty the cache after each
use. The information or services you have
accessed is stored in the cache.
To empty the cache while browsing,
select Options > Other options > Clear
the cache; in the standby mode, select
Menu > Web > Clear the cache.
■ 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 settings.
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.
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