Democrats and some Republicans raised the alarm on Dec. 20 about a massive and growing cybersecurity breach that many experts blame on Russia. Read more: https://wapo.st/37FEVoR. Subscribe to The Washington Post on YouTube: https://wapo.st/2QOdcqK Follow us: Twitter: https://twitter.com/washingtonpost Instagram: https://www.instagram.com/washingtonpost/ Facebook: https://www.facebook.com/washingtonpost/