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ISC2 Certified Secure Software Lifecycle Professional (CSSLP) Practice Question

While performing threat modeling for a defense contractor's new satellite-control platform, the security architect wants to ensure that the risk from Advanced Persistent Threats (APTs) is properly captured. Which attacker behavior would BEST indicate the presence of an APT rather than a common opportunistic adversary?

  • Within hours of entry, the intruder encrypts all reachable servers and demands cryptocurrency payment for the decryption keys.

  • After a successful spear-phishing email, the attacker maintains undetected access for months and slowly exfiltrates satellite design files that support a nation-state's long-term space program.

  • The attacker quickly replaces the company's public home page with hacktivist slogans to maximize media exposure.

  • Automated scripts scan wide IP ranges for unpatched systems to conscript them into a spam-sending botnet.

ISC2 Certified Secure Software Lifecycle Professional (CSSLP)
Secure Software Architecture and Design
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