Officials deny another critical vulnerability in Moscow’s online voting system, as they secretly patch the issue

On August 28, Moscow officials conducted the fourth and final test of a new online voting system that will debut in City Duma elections on September 8. The new voting option will be available to roughly 5,000 Muscovites in three okrugi (districts), where the voters make up less than one percent of the electorate in their respective okrugi. Ahead of the final test, the Moscow Mayor’s Office patched a critical vulnerability that would have allowed hacked to track voting results in real time. The election’s organizers never acknowledged this flaw, and they’ve decided to wait until the last minute to release the system’s source code to independent experts.