Insights
Threat intelligence from the Ninjas.
Field notes, threat analysis and practical remediation from the operators who track these actors daily — written to move you from reactive to proactive.
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June 9, 2025
Model Context Protocol (MCP) – Transformative AI Tech with Risk
Model Context Protocol (MCP) is transformative for artificial intelligence (AI), standardizing and creating context for a Large Language Model (LLM) to interact with external tools…
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Recent analysis & field notes.
0x4D5A
November 26, 2025
CTI Threat Hunting
Proactively threat hunting in your organization is an essential function to continually reduce risk. Today we have cultural and CRINK nation influences that have introduced…
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October 13, 2025
Warlock Ransomware Warpath
Precision Blitzkrieg Warlock ransomware (aka Storm 2603, Warlock Dark Army, GOLD SALEM, FIN11, TA505, Dungeon Spider, UNC902) emerged in the wild March 2025 and has…
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October 7, 2025
Is Automated Pen Testing for Me?
Leading a global penetration testing practice several years ago I found that most organizations that planned their needs last minute were meeting compliance that they…
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June 9, 2025
Model Context Protocol (MCP) – Transformative AI Tech with Risk
Model Context Protocol (MCP) is transformative for artificial intelligence (AI), standardizing and creating context for a Large Language Model (LLM) to interact with external tools…
READ MORE0x4D5A
July 15, 2024
Right Person – Right Role
I pulled the wrench to the left and it slipped off the head and I wracked my knuckles, pulling the skin off two fingers. I…
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May 1, 2024
Alert Angina
Have we moved from "drowning in data" to "Alert Angina"? I fear (pun intended) we are so overwhelmed with alerts, emails, and the 'noise' of…
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October 31, 2023
Trusting AI – Can We?
John asks an online artificial intelligence (AI) tool for advice and it generates an answer, but can you TRUST the answer? How do you know…
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October 31, 2023
Cyber Threat Intelligence Actionability
How is actionability achieved leveraging your blue team operations within IT, security teams, and CTI? HINT: It's not a tool! CTI “Actionability” is a marketing…
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October 19, 2023
Cybersecurity maturity – where are you at?
The threat of the unknown is real? You may think you have a well managed network until you discover, from a breach, that you've been…
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October 12, 2023
Naming of 4D5A Security
We often get asked, how did you name 4D5A Security? It's named after a Windows executable. If you're a programmer or a malware analyst you're…
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October 12, 2023
Culture Bias in the Workplace
I'm at work on a conference call, working from home as an American doing work with several colleagues from several different countries and cultures from…
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