[mothered]

I tried to follow the conversation but I didn't understand what this attack was about.

It's not about the attack, but rather Mitnick's brilliant manipulation to SE his target successfully.

You'll understand this a lot better.

It reminds me the scene of the film https://www.imdb.com/title/tt0985699/ when Tom Cruise pretend to make a phone call to his supervisor in order to escape from the bunker. 

That Is certainly a good movie.

I actually watched It at the cinemas when It was officially released.