(Telecompaper) The requirements refer in particular to operators of public telecommunications networks with a high potential threat, the Agency said in a statement. The essential elements of the new security rules include the sourcing of systems only from trustworthy suppliers that follow national security regulations and provisions for the secrecy of telecommunications and for data protection, constantly monitoring the network traffic, the certification of security-related network and system components (critical key components) by the Federal Office for Information Security (BSI) and IT security checks by an approved testing body of the BSI.