Recently, it became known that 911s5 announced the permanent closure of the website. The official statement said that this was because the website was attacked, resulting in user data loss and no more extended operation. Since the 911s5 is widely welcomed due to its low price, the news has left many very disappointed. 911s5 is the world's largest proxy platform, but its website has no defense mechanism. Why is that? Is it so easy to be attacked? The closure of the website may be due to s...