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Targeted attacks are cyberattacks directed at specific enterprises or organizations. While often motivated by the exfiltration of high-value financial data, we increasingly observe attacks driven by ideological agendas – such as those by “Anonymous” – where targets are selected for conflicting with the attackers’ principles or perceived sense of justice. These attacks are highly diverse in nature and extremely persistent, which adversaries employ a wide range of tactic repeatedly until their objectives are achieved. Common methodologies include “Spear Phishing” which exploits social engineering, and “Watering-Hole” attacks that deliver malicious payloads through compromised websites.
Because these sophisticated attacks evolve until they succeed, relying solely on “Perimeter Defense” (such as Firewalls or IPS) is inherently insufficient for total prevention. To build true resilience, organizations must move beyond the perimeter, implementing a multi-layered security posture that integrates defensive measures throughout the entire attack lifecycle.
Asgent provides comprehensive Defense-in-Depth strategies by integrating a diverse portfolio of products and services. Our approach ranges from perimeter defense, which blocks suspicious traffic, to proactive countermeasures against unknown threats and specialized CSIRT establishment support. By orchestrating these multiple layers of protection, we deliver a robust security posture capable of thwarting today’s most sophisticated attacks.

1. Countermeasures against C&C Server Communications and Malicious Programs Including Bots and Ransomware
   Since most targeted attacks infect host PCs to establish connectivity with a Command and Control (C&C) server – enabling attackers to hijack systems, laterally spread malware across the network, and exfiltrate sensitive data – it is imperative to implement traffic monitoring for early anomaly detection and proactive blocking of illicit communications based on the latest threat intelligence.
2. Zero-Day Threat Mitigation
   To effectively mitigate zero-day attacks, organizations should implement a framework that ensures safe data utilization by systematically vetting all files – whether received from external sources via email and social media or exchanged internally – through automated sanitization (Content Disarming) or risk assessment within a secure sandbox environment.
3. Rapid Detection of Internal Infiltration
   In contemporary targeted attacks, adversaries often remain latent within a network for extended periods to conduct reconnaissance, with the scale of damage typically correlating to the duration of this “dwell time”. To minimize actual loss, it is critical to maintain continuous monitoring of internal network traffic to detect suspicious anomalies, enabling rapid risk analysis and device identification to gain precise situational awareness and execute and immediate initial response.