This report provides statistics on attacks performed against web applications during the fourth quarter of 2017. The report describes the most common types of attacks, objectives, intensity, and time distribution of attacks. It also contains statistics by industry. With this up-to-date picture of attacks, companies and organizations can monitor trends in web application security, identify the most important threats, and focus their efforts during web application development and subsequent protection. The example attacks presented in this report have been manually verified to rule out false positives.