Are you planning to take the Security+ exam? If so, make sure you understand application attacks. For example, see if you can you answer this practice test question?
Q. An attacker recently attacked a web server hosted by your company. After investigation, security professionals determined that the attacker used a previously unknown application exploit. Which of the following BEST identifies this attack?
A. Buffer overflow
B. Zero-day attack
C. Fuzzing
D. Session hijacking
See if you're correct, and view the full explanation here.