Download Pro PHP Security by Chris Snyder, Michael Southwell PDF

By Chris Snyder, Michael Southwell

professional personal home page safeguard is without doubt one of the first books committed exclusively to Hypertext Preprocessor safety. it is going to function the whole advisor for taking protecting and proactive safety features inside your Hypertext Preprocessor functions. (And the equipment mentioned have compatibility with Hypertext Preprocessor types three, four, and 5.)

The wisdom you will achieve from this entire consultant might help you hinder attackers from probably disrupting web site operation or destroying facts. and you can know about numerous safety features, for instance, growing and deploying "captchas," validating email, keeping off SQL injection assaults, and fighting cross-site scripting attempts.

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Fm Page 6 Wednesday, June 22, 2005 5:08 AM 6 CHAPTER 1 ■ WHY IS SECURE PROGRAMMING A CONCERN? message. html for an example. • Griefers, trolls, and pranksters: While possibly not quite as serious as the malicious liars described previously, the class of users commonly known as griefers or trolls or pranksters are more annoying by a factor of 10, and can quickly take the fun out of participating in a virtual community. Griefers are users who enjoy attacking others. The bullies you find as a new user in any online role-playing game are griefers, who, hiding behind the anonymity of a screen name, can be savagely malicious.

There is considerable general administrative overhead in apportioning privileges to the various partitions. While Open Source solutions may be essentially free of literal cost, they can nevertheless be very expensive, in that they bring along the responsibility of requiring the system administrator to do all the work. And, of course, while each virtual machine may be resistant to infiltration (intentional or inadvertent) by another virtual machine, the whole system is still vulnerable to Denial of Service attacks.

99%). • It is not at all unusual for certain kinds of web applications to provide the capability for users to leave comments or messages on a discussion board or in a guestbook. Stuffing content in these kinds of situations might seem innocuous, since that input seems not to be tied to actual or potential value. But in fact, messages containing little or nothing besides links to a website have become a serious problem recently, for they can inflate hugely that website’s search engine rankings, which have all-too-obvious value.

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