In the USA, on of the first proven cases of election fraud through voting machines has been documented.
This is a very relevant finding, since many European countries are using those machines or are discussing their usage. The example above shows that fraud through those devices is actually possible, and quite easy if you get someone into the system who is helping to execute the fraud.
I'd like to remind that quite recently the German Constitutional Court banned a certain type of voting machines, in particular because they were not in line with transparency standards.
Belgien: Angst vor dem Ausverkauf
5 hours ago