WhiteHat Security’s latest report on Web site security shows cross-site scripting remains the most common Web site vulnerability. WhiteHat Security’s latest report on Web site vulnerabilities has found the Internet in slightly better shape—emphasis on slightly. In the fifth installment of the “WhiteHat Website Security Statistics Report,” the company has found that 82 percent of the 687 Web sites assessed by the company have had at least one security issue since WhiteHat began assessing them, a drop-off from the previous report released in March.