What is a scareware attack?

Scareware is a type of malicious software that uses social engineering tactics to cause shock, anxiety, or the perception of a threat. It manipulates users into buying or downloading unnecessary and potentially malicious software. The attack typically involves malicious code that generates alarming pop-up windows designed to look like legitimate system or antivirus alerts. These pop-ups falsely claim the user's computer is infected with viruses or is otherwise compromised, frightening the user into paying for fake removal software, which is itself often malware.

A. This describes phishing, which uses deceptive emails and websites to trick users into revealing sensitive information like login credentials or financial details.
B. This describes a Denial-of-Service (DoS) or Distributed Denial-of-Service (DDoS) attack, which aims to render a network or website unavailable to its intended users.
C. This describes ransomware, a type of malware that encrypts a victim's data and demands payment (a ransom) for the decryption key.

1. Official Vendor Documentation: Santos, O. (2020). Cisco CyberOps Associate CBROPS 200-201 Official Cert Guide. Cisco Press. In Chapter 3, "Cybersecurity Threats, Vulnerabilities, and Attacks," the section on "Types of Social Engineering Attacks" describes scareware as a tactic that "attempts to frighten the victim into performing an action... For example, a pop-up window may appear on your screen, displaying a message that your computer is infected with a virus." This aligns directly with the mechanism described in the correct answer.

2. Peer-reviewed Academic Publications / Reputable Institutions: National Institute of Standards and Technology (NIST). (n.d.). Glossary. Computer Security Resource Center. Retrieved from https://csrc.nist.gov/glossary/term/scareware. The NIST glossary defines scareware as: "A type of malware that is designed to trick victims into purchasing and downloading useless and/or potentially dangerous software." The description often notes the use of pop-up security alerts as the primary delivery mechanism for the "scare."

3. University Courseware: Carnegie Mellon University, Software Engineering Institute. (2010, October 26). Recognizing and Avoiding Scareware. CERT Coordination Center. In this technical article, scareware is described as malicious software that "generates bogus warnings to frighten users into buying counterfeit security software," explicitly identifying pop-up windows as the method used to present these fake warnings.