A hacker armed with a $25 PCMCIA card can, within a few minutes, change the vote totals on an aging electronic voting machine that is now in limited use in 13 U.S. states, a cybersecurity vendor has demonstrated.

The hack by security vendor Cylance — which released a video of it Friday — caught the attention of noted National Security Agency leaker Edward Snowden, but other critics of e-voting security dismissed the vulnerability as nothing new.

The Cylance hack demonstrated a theoretical vulnerability described in research going back a decade, the company noted.

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