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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 > MEdia Net > 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 SmartChip 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.
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