Imperva, Imperva Web Application Attack Report (PDF), su imperva.com, July 2012. URL consultato il 4 agosto 2013.
«Retailers suffer 2x as many SQL injection attacks as other industries. / While most web applications receive 4 or more web attack campaigns per month, some websites are constantly under attack. / One observed website was under attack 176 out of 180 days, or 98% of the time.»