AI Machine Learning NTS-nano NTP PTP IEEE1588Modern cryptography, quantum cryptography (QKD) require synchronization to maintain CRYPTO-KEY management. TIME as a ENTROPY redefines paradigm of modern cyber-security. It defines max. time domain intervals (between two network nodes) when using crypto-keys is still safe. This is due to fact we are feeling now the breath of new quantum computing that can break our data cypher much faster than classical computing. Therefore, a robust network synchronization is becoming these days a state of the art technology and important security factor for the future.