Practitioner Practice Questions

Social engineering attacks manipulate human trust to gain unauthorized access or information. Convincing an employee that an attacker is also an employee builds rapport, lowering defenses for information disclosure or credential sharing. Similarly, impersonating a company representative and requesting unrelated personal data exploits authority bias to deceive victims. These tactics exploit psychological vulnerabilities rather than technical flaws and are prevalent initial steps in multi-stage attacks. Palo Alto Networks highlights the importance of training, multi-factor authentication, and behavior-based threat detection to mitigate social engineering risks effectively.

Signature-based antivirus software is a type of security software that uses signatures to identify malware. Signatures are bits of code that are unique to a specific piece of malware. When signature-based antivirus software detects a piece of malware, it compares the signature to its database of known signatures12. If a match is found, the software can do three things to provide protection:

Alert system administrators: The software can notify the system administrators or the users about the malware detection, and provide information such as the name, type, location, and severity of the malware. This can help the administrators or the users to take appropriate actions to prevent further damage or infection3.

Quarantine the infected file: The software can isolate the infected file from the rest of the system, and prevent it from accessing or modifying any other files or processes. This can help to contain the malware and limit its impact on the system4.

Delete the infected file: The software can remove the infected file from the system, and prevent it from running or spreading. This can help to eliminate the malware and restore the system to a clean state4.

What is a signature-based antivirus? - Info Exchange

What is a Signature and How Can I detect it? - Sophos

How Does Heuristic Analysis Antivirus Software Work?

What Is Signature-based Malware Detection? | RiskXchange

Lateral movement is a key stage where the attacker moves across the network to find valuable targets.

Privilege escalation involves gaining higher access rights to expand control within the compromised environment.

Communication with covert channels is a tactic used during persistence or exfiltration, while deletion of critical data is not a standard APT lifecycle stage — it’s more characteristic of destructive attacks.