¿Cómo responde a las amenazas persistentes avanzadas a largo plazo?

APTs are motivated by a specific goal or objective, such as espionage, sabotage, or theft, and are supported by well-resourced actors like nation-states, criminal groups, or competitors. Advanced Persistent Threat Identification Tactics: 1. Behavioral Analysis 2. AI-Driven Threat Intelligence 3. Endpoint Detection and Response (EDR) 4. Regular Security Audits and Penetration Testing APT Mitigation Strategies : 1. Segmentation and Access Control 2. Updating and Patching Systems 3. Data Encryption APT Response Tactics: -Incident Response Plan -Forensic Analysis -Collaboration with Law Enforcement

I have several clients who work in cybersecurity prevention. The best thing you can do to prevent a hacker from getting into any system like @Robert stated is to look at patters of previous attacks number one. Secondly, you have to be 10 times smarter than the hacker and think ahead. There is NEVER such thing as having too much protection.

Monitoring your DNS traffic and breaking encryption are ways to do this. But also looking at data traffic patterns is another way. X system normally sends 100Mbs of data a day and is now sending gigabytes this could be a concern. But in order to do any of this you need baselines of what good looks like and that is one of the harder parts.

Analyze indicators of compromise (IOCs) like suspicious files, network traffic, or registry entries and cross-reference these with threat intelligence sources such as reports and feeds. Additionally, look for evidence of lateral movement, privilege escalation, or data exfiltration to understand the attackers' objectives and capabilities, which is crucial for effective mitigation.

Collecting and persevering evidence is key, this is how you can identify other systems infected in your network. Let's say the infected system is his a C2 or sending data from DNS to an odd website. If you can identify that you can find all other systems infected. Attackers are not all amazing highly technical people, the average attacker will do the same thing on as many systems as they can changing nothing. Just because it's easier or they lack the skills to change it. Remember in most cases you were not targeted you were just easy.

The next step in handling an Advanced Persistent Threat (APT) is to contain the threat by isolating compromised systems, networks, or users to prevent further damage or spread. This may involve applying patches, blocking ports, disabling accounts, or changing credentials. Simultaneously, collect and preserve relevant evidence—such as logs, memory dumps, or disk images—for thorough analysis and investigation. Effective containment also includes timely communication with stakeholders—management, legal, and public relations—to update them on the incident status and actions taken, ensuring coordinated and informed responses.