to be firm and tough in negotiation
être ferme et dur dans les négociations (etre ferme et dur dans les negociations)
"He decided to play hardball during the contract talks."
"Il a décidé de jouer dur lors des négociations du contrat." (Il a decide de **jouer dur** lors des negociations du contrat)
to explain something in simple, non-technical language
to accept or take responsibility for something
I am the one responsible; I will take responsibility.
exactly what is needed or wanted
a cyberattack that occurs before a vulnerability is patched
to gain unauthorized access to a system or network