Web application attack

Definition
A web application attack is

"[a]n attack utilizing custom Web applications embedded within social media sites, which can lead to installation of malicious code onto federal computers to be used to gain unauthorized access. A hijacked account of a federal user or a federal account may allow for unauthorized posts, tweets, or messages to be seen by the public as official messages, or may be used to spread malicious software by encouraging users to click links or download unwanted applications."