In CEH v13 Cryptography, this threat is formally referred to as "Harvest Now, Decrypt Later" (HNDL).
It describes a long-term cryptographic risk where adversaries intercept and store encrypted communications today, even though they cannot decrypt them with current computational capabilities. The expectation is that future quantum computers will be powerful enough to break widely used public-key cryptographic algorithms.
CEH v13 emphasizes that quantum algorithms such as Shor's Algorithm can theoretically break RSA, DSA, and ECC by efficiently solving integer factorization and discrete logarithm problems. However, the defining feature of this threat is not the act of breaking encryption itself, but rather the strategic collection and storage of encrypted data in advance.
Option C is incomplete because it focuses only on the cryptographic mechanism rather than the threat model.
Options B and D are unrelated to the scenario described and refer to quantum communication integrity issues, not long-term cryptographic exposure.
CEH v13 highlights that sensitive data with long confidentiality lifetimes-such as government records, financial data, healthcare information, and intellectual property-is especially vulnerable to this threat. As a result, organizations are encouraged to adopt quantum-resistant (post-quantum) cryptographic algorithms proactively.
Thus, Option A accurately describes the threat model and aligns with CEH v13's treatment of future cryptographic risks.

CEH training emphasizes that highly tailored social engineering attacks-those exploiting trust in internal workflows and perceived technical authority-are far more effective than generic or mass-distributed phishing attempts. A fake IT support portal that mirrors internal systems leverages procedural familiarity: IT departments commonly instruct employees to log into support portals for troubleshooting, credential verification, or ticket updates. When the attacker enhances the pretext with insider terminology and references to real internal systems, employees are more likely to trust the portal and enter credentials. CEH highlights that successful social engineering attacks mimic legitimate processes to avoid suspicion. Phone calls posing as executives often introduce risk due to real-time interaction and scrutiny. Generic phishing lacks personalization and is easily detected. Physical impersonation introduces operational risk and may not yield credentials. Therefore, a fake IT support portal aligned with IT workflows is the optimal method.

Injecting a tautology into the userID parameter forces the SQL query condition to always evaluate as true. If multiple profiles or unintended data are returned, it confirms that the parameter is vulnerable to SQL injection.

A DNS zone transfer copies DNS records from an authoritative server to another authorized server. If misconfigured, unauthorized parties may obtain valuable infrastructure information, including hostnames and internal naming conventions. Properly restricting zone transfers to trusted servers reduces unnecessary information disclosure.