Free Practice Questions for IIBA IIBA-CCA Exam

Social engineeringis the broad technique attackers use when they manipulate human psychology—such as trust, fear, urgency, curiosity, sympathy, authority, or the desire to be helpful—to persuade someone to take an action that benefits the attacker. The key idea in the question is “exploit human emotions and connection,” which is the defining characteristic of social engineering. Rather than breaking a system through purely technical means, the attacker targets the person as the easiest path to access, credentials, sensitive information, or physical entry.

Phishing is aspecific subtypeof social engineering that typically uses email, text messages, or fake websites to trick users into clicking links, opening attachments, or entering credentials. Tailgating is another subtype focused onphysical access, where an attacker follows an authorized person into a restricted area by leveraging politeness or social pressure. Malware is malicious software used to compromise systems; it can be delivered through social engineering, but malware itself is not the human-manipulation technique.

Cybersecurity control guidance treats social engineering as a major risk because it can bypass technical protections by causing legitimate users to unintentionally grant access. Common defenses include awareness training, verification procedures (call-back and out-of-band confirmation), least privilege, multi-factor authentication, strong email and web filtering, and clear reporting channels so suspicious requests can be escalated quickly.

In NIST-style risk assessment,overall likelihoodis not a single guess; it is derived by considering two related likelihood components. First isthe likelihood that a threat event will be initiated. This reflects how probable it is that a threat actor or source will attempt the attack or that a threat event will occur, considering factors such as adversary capability, intent, targeting, opportunity, and environmental conditions. Second isthe likelihood that an initiated event will succeed, meaning the attempt results in the adverse outcome. This depends heavily on the organization’s existing protections and conditions, including control strength, system exposure, vulnerabilities, misconfigurations, detection and response capability, and user behavior.

Option A matches this structure: analysts evaluate bothattack initiation likelihoodandinitiated attack success likelihoodto reach an overall view of likelihood. A high initiation likelihood with low success likelihood might occur when an organization is frequently targeted but has strong defenses. Conversely, low initiation likelihood with high success likelihood might apply to niche systems that are rarely targeted but poorly protected.

The other options are incomplete or misplaced. Risk impact is a separate dimension from likelihood, and mitigation strategy is an output of risk treatment, not an input to likelihood. Site traffic and commerce volume can influence exposure but do not define likelihood by themselves. Past experience and trends are useful evidence, but they support estimating the two likelihood components rather than replacing them.