Technically dedicated, smart bad guys are the scariest

At the beginning of the film, a similar technique is adopted. The heroine seems to be cleverly cracked down on a seemingly powerful hacker scam website, and then the whole film describes how she was teased by a genius Internet demon and applauded. between. It shows that this person is even smarter.

Let us take a professional look at his criminal methods. He built a website by himself, the domain name is http://www.killwithme.com, (there is such a website, after clicking it, it is actually an advertisement for The Federal Cyber ​​Crime Task Force), registered a domain name resolution service in Russia, and set it up Ultra-low TTL (Time To Live), and then used a powerful botnet to constantly synchronize website mirroring. Finally, in order to avenge the "curious Americans", he blocked all IPs outside the United States, that is, only People in the United States can visit the site.

One by one, first of all, he used the domain name service located in Russia to prevent the US network harmony mechanism from preventing the US government from interfering with the domain name resolution of netizens. Because he uses a botnet to synchronize the mirroring of the website, his website is like a large cluster server, with servers all over the world. The FBI cannot block the IP to prevent Internet users from accessing the content of the website. At the same time, he set the lifetime of the IP address resolved by the domain name to be ultra-short, so that every time a user visits the website, he must re-query the IP address corresponding to the domain name. You can get accessible sites by swiping it several times. The last one to block all IPs outside of the United States has no technical content. Anyway, greedy Americans don't assign many IPV4 addresses to the rest of the world.

To sum up, the FBI in the United States is not as good as the ISP in China, such as China Telecom, Netcom, etc., directly give your regional DNS up and down, such as previously blocked Google, Youtube, etc., encountered domain name resolution requests for specific websites Return errors directly to you (or ads...).

In general, this film talks about Web 2.0, using cutting edge technology concepts such as botnets and honeypot hosts, which is both trendy and academic. Although its horror effect is dismissed by many people, I am very happy that a movie that discusses the influence of the rise of the Internet on people's private lives and the relationship between people's curiosity and morality can be so dedicated.

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