Thisbookisapracticalguidetodiscoveringandexploitingsecurityflawsinwebapplications.By“webapplication”wemeananapplicationthatisaccessedbyusingawebbrowsertocommunicatewithawebserver.Weexamineawidevarietyofdifferenttechnologies,suchasdatabases,filesystems,andwebservices,butonlyinthe