You can improve the security by adding a 'second layer' of protection called 'two factor authentication'. This means adding another method of authenticating your users, on top of the existing username and password access.
Digi-Access™ adds two security functions:
Digi-Access™ is compatible with 27 different servers [2], so adding the second layer of security to your infrastructure does not require any re-programming of your existing environment. It literally 'sits in front' of your current systems.
Links:
[1] https://www.digi-sign.com/downloads/download.php?id=digi-ca-pdf
[2] https://www.digi-sign.com/en/digi-access/compatibility
[3] https://www.digi-sign.com/demos/online-extranet/enroll.php
[4] https://www.digi-sign.com/order/digi-ca
[5] https://www.digi-sign.com/en/support/digi-access/index
[6] http://www.digi-sign.com/demos/digi-ca/
[7] https://www.digi-sign.com/https
[8] https://www.digi-sign.com/en/digi-ca
[9] https://www.digi-sign.com/digi-ca/service
[10] https://www.digi-sign.com/digi-ca/server
[11] https://www.digi-sign.com/en/identity+authentication/index
[12] https://www.digi-sign.com/taxonomy/term/83