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What are SSL Stripping Attacks?

The internet is secured by HTTPS protocol, but in an SSL stripping attack, that layer of protection can be peeled away by cybercriminals and leave users exposed.

«[SSL stripping] takes advantage of the way most users come to SSL websites. Most visitors connect to a website’s page that redirects through a 302 redirect, or they arrive on an SSL page via a link from a non-SSL site. If the victim wants, for instance, to buy a product and types the URL www.buyme.com in the address bar, the browser connects to the attacker machine and waits for a response from the server. In an SSL Strip, the attacker, in turn, forwards the victim’s request to the online shop’s server and receives the secure HTTPS payment page…

At this point, the attacker has complete control over the secure payment page. He downgrades it from HTTPS to HTTP and sends it back to the victim’s browser. The browser is now redirected to http://www.buyme.com. From now onward, all the victim’s data will be transferred in plain text format, and the attacker will be able to intercept it. Meanwhile, the website’s server will think that it has successfully established the secure connection, which indeed it has—but with the attacker’s machine, not the victims.»

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