CompTIA Security+ Question G-21

Which of the following may cause Jane, the security administrator, to seek an ACL work around?

A. Zero day exploit
B. Dumpster diving
C. Virus outbreak
D. Tailgating

Answer: A

Explanation:
A zero day vulnerability is an unknown vulnerability so there is no fix or patch for it. One way to attempt to work around a zero day vulnerability would be to restrict the permissions by using an ACL (Access Control List) A zero day vulnerability refers to a hole in software that is unknown to the vendor. This security hole is then exploited by hackers before the vendor becomes aware and hurries to fix it—this exploit is called a zero day attack. Uses of zero day attacks can include infiltrating malware, spyware or allowing unwanted access to user information. The term “zero day” refers to the unknown nature of the hole to those outside of the hackers, specifically, the developers. Once the vulnerability becomes known, a race begins for the developer, who must protect users.