Knowing SQL Injection
Knowing SQL Injection is yet another common vulnerability that is the result of
lax input valida-tion. Unlike cross-site scripting vulnerabilities that
are ultimately directed at your site’s visitors, SQL injection is an
attack on the site itself—in particular its database. The goal of SQL
injection is to insert arbitrary data, most often a database query, into
a string that’s eventually executed by the database. The insidious
query may attempt any num-ber of actions, from retrieving alternate
data, to modifying or removing information from the database. download tutorial SQL Injection
here
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