The english version shows as:
Welcome to the Bitcoin Core RPC console.
Use up and down arrows to navigate history, and Ctrl-L to clear screen.
Type help for an overview of available commands.
WARNING: Scammers have been active, telling users to type commands here, stealing their wallet contents. Do not use this console without fully understanding the ramification of a command.
It is just a warning about social engineering really... basically it says "don't just blindly copy/paste commands and/or the output to anyone that asks for it"...
Honestly, newbies probably shouldn't be playing with the debug console anyway
![Tongue](https://bitcointalk.org/Smileys/default/tongue.gif)
But, hopefully the warning is scary enough that anyone looking at the console will properly investigate what a given command actually does before they try and execute it!