Security Incident Reports: When DDoS Meets TYPO3

Table of Contents  

Why Structured Incident Reports?  

The threat landscape encompasses two extremes: Massive DDoS attacks that flood networks with data volumes of several terabits per second, and targeted application attacks on CMSs like TYPO3, which can remain undetected for months. A structured report bridges the gap between technical analysis and strategic risk management.

Harmonising Frameworks  

Various organisations use different standards – this 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 assessments ("The attack felt severe") are useless. Objective evaluation is based on:

Blameless Post-Mortems  

Modern incident response does not look for scapegoats, but rather systemic failures. 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 serves as a quick orientation for C-level executives and external stakeholders – concise and free of technical jargon.

Executive Summary (max. 200 words):

The narrative follows the Situation → Complication → Resolution schema:

"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  

Here you gather facts for further analysis and system hardening.

Attack Vectors (TTPs): Description via 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 hard drives – the analysis relies exclusively on log data from network devices and filtering providers.

DDoS Metrics  

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

Impact Assessment  

The severity is evaluated 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 to act as amplifiers. The mechanism:

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

The Amplification Factor describes the amplification ratio: some protocols multiply the traffic by 500 times or more. With 100 Mbps of bandwidth, an attack exceeding 50 Gbps can be generated.

Relevance of CVE Correlation:

1. Self-assessment: Are vulnerable services active within your own infrastructure? Are your own systems potentially acting as reflectors?
2. Threat Intelligence: Which known vulnerabilities are currently being exploited globally – and is there a need for action?

TYPO3 Forensics  

With TYPO3 as an enterprise CMS, making a precise distinction is vital: vulnerabilities in the TYPO3 Core (responsibility: TYPO3 GmbH/Association) versus vulnerabilities in extensions (responsibility: agency/developers). This distinction dictates reporting channels and responsibilities.

System Inventory  

Before beginning 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 operates on the principle of responsible disclosure.

Preparatory Measures  

Email Template  

This template meets the requirements of the TYPO3 Security Team:

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 presented here integrates global standards (NIST/SANS) with the specific requirements 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 of this article is available as a machine-readable skill for AI assistants. With it, Claude, ChatGPT, or other LLMs can generate structured incident reports according to NIST/SANS standards.

Example Prompts for the AI Assistant: