question:That's really interesting. I've heard about D-Day before, but I didn't realize how important it was to the outcome of the war. How many troops were involved in Operation Overlord?

question:Here is a piece of text: So, you really, really would like to get your hands on a Tesla Model 3. The only problem is you that don’t have a spare 50,000 or so to lay out for the version of the electric car that you would like with its maximum-length battery and whatever other bells and whistles come with it. Well, never fear — Tesla will give you a Model 3 for free. Ah, but there must be a catch, right? Of course there is. And it’s a good one. Tesla will give you a Model 3 for free if you can hack into the car’s security system. Now, don’t be too disappointed. You didn’t think Chief Executive Elon Musk was just going to pull an Oprah and shout, “You get a car!” to every prospective customer who walks into a Tesla showroom, did you? The promotion, called Pwn2Own and run by security services and technology company Trend Micro, is part of a “bug bounty” program aimed at finding weaknesses and vulnerabilities within software programs and operating systems. This is the first time Trend Micro’s competition has included an automotive category, and Tesla was the only carmaker to get in on the contest. Bounty programs are common in the technology sector, and companies often offer big rewards to individuals who are able to find flaws in software and other systems. For example, last year, Intel ran a program that paid up to 250,000 to anyone who could discover specific vulnerabilities in its semiconductor systems. Tesla has run its own bug bounty program since 2014, and has offered rewards of as much as 15,000 for the finding of various kinds of flaws in its automotive systems. But this is the first time the company has gone so far as to put up one of its cars as a prize for hacking into its computer systems. Teslas haven’t been immune to the efforts of outside hackers. In 2016, security researchers from China demonstrated a method by which they were able to hack into, and take control of, a Tesla Model S from 12 miles away. And last fall, researchers at a university in Belgium showed how a hacker with about 600 worth of equipment could clone a key fob of a Tesla Model S and steal the car. Based on the text material above, generate the response to the following quesion or instruction: What are some examples of vulnerabilities that have been discovered in Tesla's computer systems in the past?

question:Can you tell me more about Tesla's bug bounty program?

question:Can you tell me more about the Pwn2Own competition that Tesla participated in?