Yesterday, the House Homeland Security Committee published a video on their Youtube page highlighting a portion of the committee questioning Roberta Stempfley, acting assistant secretary of the Department of Homeland Security’s Office of Cyber-security and Communications, who confirmed at least 16 attacks on the Affordable Care Act’s portal Healthcare.gov website in 2013.
Roberta Stempfley highlighted one successful attack that is designed to deny access to the website called a Distributed Denial of Service (DDoS) attack. A DDoS attack is designed to make a network unavailable to intended users, generally through a concerted effort to disrupt service such as repeatedly accessing the servers, saturating them with more traffic than the website is designed to handle.
Right wingers have been distributing the link to the necessary tools to perform the attacks on the Healthcare.gov website through social networking, as pointed out by Information Week, and other websites
Right wing cyber attacks on Healthcare.gov website confirmed
The Massive Republican Campaign to Sabotage the Affordable Care Act
I had wondered if some of the "failures" of the HealthCare.gov site might be due to something like this. Apparently, my suspicions have been confirmed.