Service providers who offer electronic communications services should inform end- users of measures they can take to protect the security of their communications for instance by using specific types of software or encryption technologies. The requirement to inform end-users of particular security risks does not discharge a service provider from the obligation to take, at its own costs, appropriate and immediate measures to remedy any new, unforeseen security risks and restore the normal security level of the service. The provision of information about security risks to the subscriber should be free of charge. Security is appraised in the light of Article 32 of Regulation (EU) 2016/679.