Thanks for the comments and I'm glad you enjoyed the video. As you pointed out, Hacker's talents can be used for good or evil. It's amazing how an item or method that started out good can easily move quickly to the dark side because of a few bad apples.
@Nadine: Yes indeed without hackers we might not know the loopholes we have in the system. There were many instances where due to hackers systems got developed in a much stronger manner. So if you look in that aspect hackers are friends.
I think most hackers are still "good guys" as this conference demonstrates. Today, hackers are the ones who let companies, and the public, know about security holes and breaches. Without hackers, the "bad guys" would get away with a LOT more than they do now.
Besides, when you're up to no good, you don't do it in public at a conference.
@Greg- I think it is an especially malicious attack when directed towards medical equipment which is designed to save lives, not to cause harm. A sad comment on our society, but very glad to see you are keeping the need for increased security in mind when you work on your designs.
As a medical equipment designer, I am very interested in learning more about the techniques these hackers use and the weakness they exploit in existing devices so that we can design next-generation products that are not as susceptible to these types of attacks.
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