Security

🔥 A Mind That Dissects Systems

Endpoint Evasion Techniques (2020–2025): The Evolution of Attacks Bypassing EDR

This post analyzes the evolution of endpoint evasion techniques from 2020 to 2025. It covers BYOI, BYOVD, DLL hijacking, service tampering, and other sophisticated methods attackers use to bypass EDR and AV. Real-world ransomware cases and vendor impact are discussed, along with defensive insights.

SPOF in Cybersecurity: From History to Strategy, a Graph-Based Analysis

Analyzing the threat of Single Points of Failure (SPOF) through historical examples and graph theory, this piece presents a strategic approach to identifying and mitigating structural weaknesses in cybersecurity infrastructures.

Detection Frameworks and Latest Methodologies for eBPF-Based Backdoors

This article analyzes the rise of backdoors and rootkits exploiting eBPF, the detection challenges they pose, and comprehensively summarizes the latest countermeasures and research trends (2023–2025), including Tracee, LKRG, bpftool, and hypervisor-based auditing.

In-Depth Report on Telecommunication Security: SKT Breach and Global Case Studies

An in-depth analysis focusing on the 2025 SKT breach, the core security structures of telecom infrastructure, and historical global incidents (Gemalto, APT10, Circles). Also covers subscriber authentication (Ki, SUPI/SUCI) and security differences between 5G SA and NSA.

🔥 Trust and Culture Beyond Technology

Is Your Data in the Cat's Paws?

The 2025 KakaoPay case exposed the limits of formal consent and self-regulation. Data democracy must be achieved through AI-based DPIA verification and civic oversight.

There’s No Such Thing as a Free Lunch, But Security Was Free

The global security community has depended on CVE for decades without ever paying a dime. As the system nears collapse, it’s time to ask who should bear the cost of public cybersecurity infrastructure.

Common Security Myths Developers Tell Themselves

This article breaks down common developer security myths—responsibility deflection, overconfidence in technology, and security underestimation—and offers realistic countermeasures.

Common Misconceptions of Security Assessors

As the cybersecurity landscape constantly evolves, vulnerability assessment has become a critical defense against potential security breaches. However, due to common misconceptions, the effectiveness of these evaluations often diminishes. In this article, we will explore the common misconceptions about security vulnerability assessments and suggest effective strategies to overcome these issues, ultimately supporting the improvement of organizational security levels.

🔥 Code That Fixes, Not Just Runs

How I Managed Unmaintained Open Source with Gmail and Snyk Alerts

When API access falls short, automation through Gmail and Apps Script becomes essential. Here’s how I used Google Apps Script to collect Snyk vulnerability alerts and patch data automatically.

How to Block ECH and Mitigate DoH in Enterprise Networks

A hands-on guide using dnsmasq to filter SVCB and HTTPS records for disabling ECH and enforcing central DNS policies. Notes that DoH requires separate network-layer policies.

Dicer Module Vulnerability Mitigation Guide: CVE-2022-24434

This guide analyzes a vulnerability in the Dicer module indirectly affecting Multer, and provides a practical mitigation strategy. It serves as a real-world example of dealing with unmaintained open source dependencies.

How I Managed Unmaintained Open Source with Gmail and Snyk Alerts

When API access falls short, automation through Gmail and Apps Script becomes essential. Here’s how I used Google Apps Script to collect Snyk vulnerability alerts and patch data automatically.

There’s No Such Thing as a Free Lunch, But Security Was Free

Common Security Myths Developers Tell Themselves

This article breaks down common developer security myths—responsibility deflection, overconfidence in technology, and security underestimation—and offers realistic countermeasures.

XML-RPC Security Vulnerabilities Analysis and Mitigation Strategies

XML-RPC Security Series: Series 1 - XML-RPC Security Vulnerabilities Analysis and Mitigation Strategies Series 2 - CVE-2019-17570: Apache XML-RPC Exploit Series 3 - Exception Serialization Patterns in OpenStack Nova: Theoretical RCE Risks and Lessons Learned Summary Overview of XML-RPC Vulnerabilities: As a lightweight remote call protocol for inter-system communication, XML-RPC is exposed to various threats such as RCE, XXE, DDoS, and privilege escalation. Notable Cases: NodeBB (CVE-2023-43187), Apache OFBiz (CVE-2020-9496), PHP XML-RPC (CVE-2005-1921), etc. Real-World Use Cases: In addition to WordPress, Bugzilla, ManageEngine, and Apache OFBiz, XML-RPC is still used in some legacy systems. Mitigation Strategies: Disabling XML-RPC, enhancing input validation, reinforcing authentication systems, applying up-to-date security patches, implementing access control, and deploying WAFs. What is XML-RPC? XML-RPC (XML Remote Procedure Call) is a remote procedure call protocol that uses XML as its data format and HTTP as its transport mechanism. Proposed jointly by Dave Winer and Microsoft in 1998, it was designed to simplify cross-platform communication. ...