California-based security firm Cylance demonstrated how easy it is to hack a US voting machine. Researchers reflash the machine’s firmware via a PCMCIA card. Attackers need physical access to the device, so most attacks are offline attacks, which require physical access. US officials have already explained that attacks on actual voting machines are almost impossible, and not something they fear. The company hopes that this first demonstration of a real world attack scenario on voting machines will trigger a response from US officials.
Source: https://www.bleepingcomputer.com/news/security/security-firm-shows-how-to-hack-a-us-voting-machine/