Comment by Election Commission of India

The Election Commission would like to underline that it always had a firm conviction and complete satisfaction that EVMs could not be tampered with. Its faith on the machine has never wavered through the conduct of elections in the last many years, including the nationwide general elections in 2004, 2009 and 2014, To date, no one has been able to actually demonstrate that EVMs used by the Election Commission can be tampered with or manipulated. What has been demonstrated or claimed to have been demonstrated is on a privately assembled look-alike of ECI-EVMs and not the actual ECI-EVM. [...] Further, these machines are not networked either by wire or by wireless to any other machine or system. Therefore, there is no possibility of its data corruption, Unverified source (2017)