SQL Injection
A SQL injection attack consists of insertion or “injection” of a SQL query via the input data from the client to the application.
Security
Cross Site Scripting (XSS)
Cross-Site Scripting (XSS) attacks are a type of injection, in which malicious scripts are injected into otherwise benign and trusted websites.
Man in the middle (MITM) attack
MITM is an attack where the adversary positions himself in between the user and the system so that he can intercept and alter data traveling between them.