US e-voting system cracked in less than 48 hours

"Researchers at the University of Michigan have reported that it took them only a short time to break through the security functions of a pilot project for online voting in Washington, D.C. "Within 48 hours of the system going live, we had gained near complete control of the election server", the researchers wrote in a paper that has now been released. "We successfully changed every vote and revealed almost every secret ballot." The hack was only discovered after about two business days – and most likely only because the intruders left a visible trail on purpose"

From article: http://www.h-online.com/security/news/item/US-e-voting-system-cracked-in-less-than-48-hours-1463881.html
Found on reddit.
This puts the security and integrity of online US voting polls at risk. Such a large and significant event in the country's reliability is compromised. Imagine if a malicious user had hacked it. People's privacy would be invaded because the ballot reveals information about them. As it stands, it appears there are too many ethic concerns with e-voting for it to be viable. Perhaps it is better to stick with traditional ballots until better s