In some cases after installation or upgrade of Kali Linux everything works fine except console in GUI mode (Terminal and Root Terminal).
The solution is quite simple. Just go to Settings/Region & Language and change language from “iso… (bla bla bla)” to proper language.
After that Terminal magically start to work.
Cisco Encrypted Traffic Analytics without decryption
It might be quite surprising, but thanks to statistical analysis it is possible to distinguish between the legit and suspicious encrypted traffic without even decrypting it!
read more on Cisco site