The article has nothing about mythos breaking into classified systems in hours.

So you either posted the wrong link or are just spreading FUD.

Yes it does.

Third paragraph:

> On June 11th Mark Warner, the vice-chair of the Senate Intelligence Committee, said that General Joshua Rudd, who leads the National Security Agency and the Pentagon’s Cyber Command, had told him that Mythos “broke into almost all of our classified systems, not in weeks, but in hours”.