Read e-book online Ajax Security PDF

By Billy Hoffman

ISBN-10: 0321491939

ISBN-13: 9780321491930

This publication may be required interpreting for somebody who's constructing, operating with, or perhaps handling an internet program. the applying does not also have to exploit Ajax. lots of the strategies during this ebook are protection practices for non-Ajax purposes which have been prolonged and utilized to Ajax; now not the opposite direction round. for instance, SQL injection assaults can exist no matter if an software makes use of Ajax or no longer, yet Ajax presents an attacker different "entry issues" to attempt to assault your software. every one carrier, approach, and parameter is taken into account an access point.

The e-book itself is definitely written. the fashion of writing is enticing. the single non-exciting a part of the publication is the bankruptcy on buyer facet garage (i.e. cookies, Flash information gadgets, neighborhood storage), yet this isn't the authors' fault. the subject itself isn't fascinating and that i chanced on myself analyzing it fast so i'll get to the subsequent bankruptcy. some of the most fascinating chapters is the single on JavaScript worms, just like the Samy computer virus. additionally fascinating are the occasional mentions of experiences and discoveries within the safety group. for instance, the authors describe a proof-of-concept port scanner they wrote utilizing JavaScript on my own, which has the aptitude of scanning IP addresses and detecting the kind of net server they run (using the JS picture object). one other fascinating instance was once utilizing the :hover CSS type besides JavaScript to discover websites consumer has visited.

After studying this publication, i'm discovering myself correcting defense mistakes i'm merely comprehend discovering in my initiatives. a few corrections i have made quandary JSON, the GET vs. publish factor, and others. With the corrections made, i think that my purposes are much more secure. This e-book helped make that ensue.

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The dumb terminals and mainframe computers of the mid-twentieth century worked this way, as did early Web applications. The Web server processed all the business logic of the application, maintained any state required, constructed complete response messages for incoming requests, and sent them back to the user. The browser’s only role was to send requests to the Web server and render the returned HTML response so that a user could view it. The thin-client architecture solved the update problem that had plagued the thickclient developers.

Net was susceptible to SQL Injection, but the fact that they used client-side transformation instead of server-side transformation means that Eve can steal their entire database with just a few queries instead of waiting a long time using an automated SQL Injection tool like Absinthe. Eve is very happy that she harvested a list of usernames and passwords. People often use the same username and password on other Web sites. Eve can leverage the results from this hack into new attacks. net, Eve might be able to break into other totally unrelated Web sites.

In our earlier example (the page that displayed the current time) the data was transferred across the network as plain, unencapsulated text that was then dropped directly into the page DOM. DYNAMIC HTML (DHTML) While dynamic HTML (DHTML) is not part of the Ajax “acronym” and XML is, clientside manipulation of the page content is a much more critical function of Ajax applications than the parsing of XML responses. We can only assume that “Ajad” didn’t have the same ring to it that “Ajax” did. Once a response is received from the asynchronous request, the data or page fragment contained in the response has to be inserted back into the current page.

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Ajax Security by Billy Hoffman

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