Security Incident Reports: DDoS and TYPO3

Table of Contents  

Why Structured Incident Reports?  

The threat landscape spans two extremes: massive DDoS attacks that flood networks with several terabits of traffic per second, and targeted application attacks on a CMS like TYPO3 that can go undetected for months. A structured report bridges technical analysis and strategic risk management.

Harmonising Frameworks  

Different organisations follow different standards, which leads to inconsistent reports. This guide combines two proven approaches:

• SANS Model: 6 phases from Preparation to Lessons Learned
• NIST SP 800-61: Risk-based approach with 4 core phases

Severity Rating  

Subjective judgements ("The attack felt severe") are useless. Objective evaluation rests on:

Blameless Post-Mortems  

Modern incident response hunts for systemic failures, not scapegoats. Instead of "Admin X forgot to apply the patch", the report asks: "Why did the process allow an unpatched system to remain in production?"

Methods such as the 5 Whys or Fishbone diagrams in RCA support this philosophy.

Master Template  

The template is modular: a core module for every incident, supplemented by specialised modules for DDoS or TYPO3.

Module A: Metadata  

This section gives C-level executives and external stakeholders a quick orientation: concise and free of technical jargon.

Executive Summary (max. 200 words):

The narrative follows the Situation → Complication → Resolution pattern:

"On 23 October 2026, our monitoring systems registered a massive surge in traffic to the primary web servers. Analysis confirmed a targeted DDoS attack, which briefly led to performance degradation. In parallel, attempted attacks exploiting a vulnerability in the TYPO3 backend were detected. By rerouting the traffic to a specialised filtering provider and immediately deploying security updates, normal operations were restored within 45 minutes. No personal data was stolen."

Module B: Timeline  

The timeline is the heart of forensic reconstruction: precise timestamps detailing actions and system reactions.

Module C: Technical Analysis  

This is where you gather the facts that drive further analysis and system hardening.

Attack vectors (TTPs): Described using the MITRE ATT&CK Framework, a public knowledge base of adversary tactics

T1498 - Network Denial of Service
└── T1498.001 - Direct Network Flood
└── T1498.002 - Reflection Amplification

T1190 - Exploit Public-Facing Application
└── TYPO3 Deserialization (CVE-2026-004)

IoCs:

DDoS Post-Mortem  

DDoS attacks leave no files on disk, so the analysis relies entirely on log data from network devices and filtering providers.

DDoS Metrics  

Different metrics reveal different weaknesses. An attack with low bandwidth but an extremely high packet rate can be more devastating than a pure data flood.

Impact Assessment  

Severity is assessed across three dimensions:

DRS: Evaluation of attack complexity on a scale of 1-7:

Automated CVE Correlation  

Amplification Attacks: When Servers Become Amplifiers

In amplification attacks (also known as reflection attacks), attackers abuse third-party servers as amplifiers. The mechanism works like this:

1. A small request is sent to a vulnerable server with a spoofed sender address (the victim's IP).
2. The server replies to the apparent sender with a far larger volume of data.
3. The victim is flooded with responses it never requested.

The amplification factor captures this ratio: some protocols multiply the traffic 500-fold or more. With just 100 Mbps of bandwidth, an attacker can generate an attack exceeding 50 Gbps.

Why CVE correlation matters:

1. Self-assessment: Are vulnerable services running in your own infrastructure? Could your systems be acting as reflectors?
2. Threat intelligence: Which known vulnerabilities are being exploited globally right now, and is action required?

TYPO3 Forensics  

With TYPO3 as an enterprise CMS, one distinction is vital: vulnerabilities in the TYPO3 Core (the responsibility of TYPO3 GmbH/Association) versus vulnerabilities in extensions (the responsibility of the agency or developers). This distinction determines reporting channels and accountability.

System Inventory  

Before you start the analysis, document the exact state of the system.

Vulnerability Classes  

Forensic Checklist  

In the event of a suspected compromise (defacement, spamming, unexplained admin logins):

TYPO3 Security Team  

Reporting vulnerabilities to the TYPO3 Security Team follows strict rules. The team works on the principle of responsible disclosure.

Preparatory Measures  

Email Template  

This template meets the TYPO3 Security Team's requirements:

Subject: Suspected Vulnerability in [Extension/Core] - [Short Description]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Dear TYPO3 Security Team,

I am writing to report a suspected security vulnerability in accordance 
with your coordinated disclosure policy.

1. VULNERABILITY METADATA
-------------------------
Project:              [Extension Key or "TYPO3 Core"]
Affected Versions:    [e.g., 11.5.0 - 11.5.24]
Tested Version:       [Your test environment]

After Reporting  

Conclusion  

A security incident report combines technical excellence with communicative clarity. The template here brings together global standards (NIST/SANS), the specific demands of DDoS attacks, and the TYPO3 security architecture.

Security is not a state, but a process – and this report is the protocol of that process.

Using as an AI Skill  

The methodology behind this article is available as a machine-readable skill for AI assistants. With it, Claude, ChatGPT, and other LLMs can generate structured incident reports to NIST/SANS standards.

Example Prompts for the AI Assistant: