The US is reportedly readying cyber attacks if Russia tries to hack the election

In October, news broke that the CIA was preparing options to launch a cyberattack against Russia following revelations that the country was likely behind hacks at the Democratic National Committee earlier this summer. Now, a source has told NBC News that the US has penetrated key Russian systems, and will be ready to take action in case the country decides to interfere with next week’s elections.
The US is preparing in case it is "attacked in a significant way"
The systems allegedly includ