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    Understand the role of AI in fortifying defenses against evolving threats.

    QR Code Phishing
    QR Code Phishing

    QR codes serve as a new bypass method to evade detection.

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What is an Advanced Persistent Threat (APT)?

An Advanced Persistent Threat (APT) is a type of cyber attack in which an attacker covertly gains access to a network and then uses that access to compromise sensitive data or systems with the primary goal of extracting sensitive information over long periods of time.

Advanced Persistent Threat Explained

An advanced persistent threat (APT) is a type of attack in which an intruder or group of intruders gain unauthorized access to a network and remain undetected for long periods of time in order to steal sensitive data. Some APTs will sit dormant for long periods of time, waiting to be activated at a set time, or by a detected event, or until activated by the attacker. These attacks are carefully planned and often target large businesses or government networks. The consequences of these intrusions can be serious, such as theft of intellectual property, exposure of sensitive information, sabotaging of organizational infrastructure, or even a complete takeover of a network or website. Carrying out an APT attack requires more resources than a standard web application attack. The perpetrators are usually well-funded and have sophisticated tools and skills at their disposal.   

There are three key elements that distinguish an APT from other types of attacks:  

  1. The attackers have a specific goal or targets in mind 
  2. The attackers are highly skilled and have the resources to sustain the attack for a long period
  3. The attackers use sophisticated methods to avoid detection

How Advanced Persistent Threats work

Phase 1: Infiltration 

The most common way that APTs gain initial access to a network is by compromising an attack surface by means of malicious content or socially-engineering via phishing. These attacks are commonly launched in conjunction with other cyberattacks (e.g., DDoS attacks, etc.) to distract security personnel from the primary attack vector for the breach. 

When attackers first breach a network, they will try to establish command and control (C2) access, or drop a payload with malware that grants network access to enable remote, stealth operations, also known as a backdoor shell. These backdoors can also take the form of legitimate pieces of software, but in reality, are Trojan viruses.  

Phase 2: Expansion 

Once the attackers have a foothold in the target's system, they will use various techniques to move laterally and expand their presence.  

Some of these lateral movement techniques include:  

  1. Pass-the-hash: This technique allows an attacker to authenticate using the hashed version of a password instead of the actual password.  
  2. Privilege escalation: This technique allows attackers to gain access to privileges they normally would not have. For example, an attacker could elevate their privileges from a basic user account to an administrator account.
  3. Exploiting vulnerabilities: This technique allows an attacker to take advantage of unpatched vulnerabilities in networks, hosts, or applications normally shielded from unauthorized access in order to achieve their objectives. 

Phase 3: Extraction 

Once the attackers have established a presence on the network, they will begin to exfiltrate sensitive data. This process of data extraction will take place simultaneously with white noise attacks akin to the attacks used to distract security teams during the initial infiltration. The most common method of data exfiltration is through FTP or HTTP traffic. However, more sophisticated attackers may use encryption to avoid detection during data extraction.  

How to prevent and detect APTs

Advanced persistent threats are extremely difficult to detect and defend against because of their sophisticated nature. Some security measures that can be taken to protect against APTs include:  

  1.  Keeping systems up to date with the latest patches and updates  
  2. Using IDS/IPS and WAF security tools to protect networks and applications 
  3. Utilizing advanced anti-phishing protection software to defend against infiltration
  4. Educating employees about phishing emails and other social engineering techniques 
  5. Monitoring network traffic for unusual activity  
  6. Implementing multi-factor authentication 
  7. Adopt least privilege frameworks and policies to restrict access to sensitive data and systems


IRONSCALES can help stop APTs before they start 

IRONSCALES is a best-in-class email security platform built to detect and remove advanced phishing threats in the inbox, powered by AI and enhanced by crowdsourced threat intelligence from security teams around the world. This cloud-native, API-based solution is quick to deploy, easy to operate and manage, and well-equipped to handle a wide range of email threats, including sophisticated social-engineering attacks and advanced threats like business email compromise (BEC), account takeover (ATO), VIP impersonation, and other threats that are commonly missed by traditional secure email gateways. 

IRONSCALES combines its machine-intelligence and automation capabilities in its solution with Security Awareness Training (SAT) and Phishing Simulation Testing (PST) built directly in our email security platform. For SAT, the platform makes use of the AI’s self-learning to help admins create training campaigns with the ideal video content for specific users or groups. PST takes advantage of the same intel to create phishing simulations modeled on the millions of real-world examples that IRONSCALES analyses every day. If users click on simulated phishing emails, they are taken to a customizable landing page with recommended steps to avoid being phished in the future. 

Check out the IRONSCALES AI-driven and self-learning email security platform here. 

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Featured Content

AI in Email Security

This comprehensive Osterman Research study explores the evolving landscape of AI-driven threats and innovative solutions implemented to stay ahead.

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Gartner® Email Security Market Guide

This guide gives email security experts an exclusive access to Gartner® research to ensure their existing solution remains appropriate for the evolving landscape.

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Defending the Enterprise from BEC

Data shows organizations deploy defense-in-depth approaches ineffective at addressing BEC attacks. Discover truly effective strategies in this report.

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