From an anomaly to the journey of dismantling a targeted APT attack campaign.

Advanced Persistent Threat (APT) campaigns targeting financial institutions and businesses are becoming a leading threat to organizations' information infrastructure.

Given the complex nature of targeted attack campaigns (APTs) aimed at financial institutions and businesses in 2026, cybersecurity experts from VNPT Cyber ​​Immunity (VCI) have provided in-depth analysis and practical incident response procedures to help businesses proactively protect their systems.

Identifying APTs: More than just a sign of intrusion.

Advanced Persistent Threat (APT) attacks are becoming a leading threat to organizations' information infrastructure. Unlike conventional cyberattacks, APTs are often stealthy, prolonged, and targeted. Identifying and countering these campaigns requires businesses to shift from a "passive response" to a "proactive defense" mindset.

Analyzing the APT landscape in Vietnam and the Asian region in 2026, Mr. Nguyen Duy Binh – Cyber ​​Security Intelligence Expert (Security Operations Center, VNPT Cyber ​​Immunity) emphasized: Identifying APTs cannot rely solely on a single alert, but requires a combination of intelligence data on the threat.

For effective detection, businesses need to master three core layers of intelligence data: IoC: Initial signs of intrusion. IoA: Signs indicating ongoing attack behavior. TTPs: Tactics, techniques, and operational procedures of the perpetrator.

"Continuously comparing this data with system logs, malware samples, and internal network traffic will help the security team accurately identify the perpetrator's modus operandi, thereby determining the relevant campaign and assessing the level of risk to the system," Mr. Binh shared.

From an unusual sign to the journey of dismantling the APT campaign.

From an incident response perspective, Mr. Bui Van Hu, Cyber ​​Security Incident Response Specialist (VNPT Cyber ​​Immunity), stated that the biggest challenge for businesses is handling incidents in the absence of complete initial intelligence data.

Through real-world scenarios shared at the recent Security Talk series of seminars, the standardized process for dismantling an APT campaign includes the following rigorous steps: Detecting anomalies; Gathering evidence; Identifying the campaign; Assessing the scope of impact; and Containment and prevention.

Expert Bui Van Huy emphasized that the tracing process must go beyond the initial compromised device or account. Simultaneously, seamless coordination between the IT team, business operations department, communications, and leadership plays a crucial role in minimizing damage to both operations and the organization's reputation.

Practical Lessons: From Attack Chain to Countermeasures Early detection and procedural response

A common mistake businesses make is focusing only on immediate problem resolution (malware removal, server restoration) while neglecting to find the root cause. Attack chain modeling helps businesses see the entire process of the attacker's actions, thereby proactively preventing the risk of re-invasion.

To enhance defenses against targeted threats, experts recommend that businesses continuously monitor: Maintain 24/7 monitoring capabilities through a Security Operations Center (SOC); Standardize procedures: Develop and regularly practice APT incident response scenarios; Proactive defense: Actively seek out threats instead of waiting for alerts.

As a reputable cybersecurity brand under the VNPT Group, VNPT Cyber ​​Immunity currently provides a comprehensive information security solution ecosystem, helping organizations and businesses protect their digital assets against sophisticated attacks. The Security Talk series of seminars, regularly organized and initiated by VCI, also affirms its commitment to accompanying the community in spreading knowledge and building a safe and reliable digital space.

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