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2015年6月17日，一名白人至上主义者走进一间圣经书房，杀害了9名非洲裔美国人。这是那天晚上的受害者和幸存者的故事。　　充满死亡气息的警报响起，随之而来的海啸将为习惯了快乐慵懒生活的人们带来前所未有的黑色记忆……4. Add the function of "Collect Products for Subsequent Purchase". "Save for later" is one of Amazon's most popular features. The company will not only remind shoppers to check their saved goods through e-mail, but also display the shoppers' saved goods in their shopping carts to encourage them to place orders. This is indeed a practical function to encourage customers to make secondary shopping. You can imitate Amazon to bind this function to your shopping session with customers, or you can ask users to leave e-mail addresses to keep relevant access records. This is also a strategy for you to ask customers to leave contact information.Two female British code breakers team with American cryptographers to solve a series of murders in San Francisco.Before performing an SSL data transfer, Both sides of the communication must first shake hands with SSL, The encryption algorithm has been negotiated to exchange the encryption key, Perform identity authentication, Normally, This SSl handshake process only needs to be performed once, But there is a Regegotiation option in the SSL protocol, It allows renegotiation of the secret key to create a new key, The attacker repeatedly carries out the key renegotiation process, and the key renegotiation process requires the server to invest 15 times more CPU computing resources than the client. In addition, even if the server does not support Renegotiation, the attacker can still create similar attack effects by opening a new SSL connection separately.