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Introduction to Yasca - Scovetta.com!

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4<br />

What is <strong>Yasca</strong>?<br />

• <strong>Yasca</strong> started as a set of perl scripts that grepped<br />

through source code looking for XSS vulnerabilities.<br />

• <br />

• <br />

• Then I needed <strong>to</strong> do multi-line searches:<br />

• String s = request.getParameter("foo");<br />

out.println(s);<br />

• As I wrote more rules, I found other scanners that<br />

already had many of them.<br />

• So I made calls out <strong>to</strong> them.<br />

• Then everything got nasty and I wrote it all from<br />

scratch again in PHP.

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