'Samsung itself is aware of these risks. In its privacy policy, the company warned customers to be aware that "if your spoken words include personal or other sensitive information, that information will be among the data captured and transmitted to a third party through your use of Voice Recognition." The language reminded some of the George Orwell classic dystopian novel 1984.'
That quote doesn't show Samsung's thoughts on the risk of hacking at all, and it shouldn't remind anyone of 1984. It's just a statement of how all voice recognition currently works.
Amazon has said on numerous occasions that no data transfer occurs without a trigger word hitting the mic -- a feature that was a main point when discussing the safety of having an always-on internet-connected mic in the house.
As for whether or not they're telling the truth, I don't know; but trigger-words have always been a feature that Amazon loved mentioning from a security/privacy standpoint.