Download Pro PHP Security (Pro) by Chris Snyder, Michael Southwell PDF

By Chris Snyder, Michael Southwell

Hypertext Preprocessor is the world’s preferred open resource net scripting language, put in on virtually 17 million domain names world wide (www.php.net/usage.php). it really is enjoyed by way of rookies and embraced by way of complex clients. This booklet bargains builders a whole advisor to taking either protecting and proactive protection techniques inside of their Hypertext Preprocessor functions. seasoned personal home page safety publications builders via the various shielding and proactive safety features that may be taken to assist hinder attackers from in all likelihood disrupting website operation or destroying facts. in addition, this ebook covers a large swath of security features, displaying readers find out how to create and set up captchas, validate e-mail, fend off SQL injection assaults, hinder cross-site scripting makes an attempt, and extra.

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Pro PHP Security (Pro)

Hypertext Preprocessor is the world’s hottest open resource internet scripting language, put in on virtually 17 million domain names around the globe (www. Hypertext Preprocessor. net/usage. php). it's enjoyed through rookies and embraced by means of complex clients. This booklet deals builders a whole consultant to taking either protecting and proactive safety methods inside their personal home page functions.

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If this check was poorly implemented, or never written at all, the subterfuge goes undetected. In a small system, it might be possible to discover and counter every possible avenue of attack, or verify every bit. But in a modern operating system, consisting of many processes simultaneously executing hundreds of megabytes of code, absolute security is doomed to being an objective, not an attainable goal. And as we discussed in the Introduction, online applications are subject to an extra layer of uncertainty, because the source of network input cannot be verified.

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.

Fm Page 11 Tuesday, July 19, 2005 5:25 AM PART 2 ■■■ Maintaining a Secure Environment If you have $1,000,000 to safeguard, you might be tempted to put it into a steel box with two-inch thick walls and weld the box shut. It would be extremely hard to get into such a box—hard, but not impossible. And if you left that box lying around where it could be carried away, so that an attacker could work on it at leisure, you can kiss that money goodbye. It turns out to be no safer than if you had stored it in a paper bag.

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