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News from the world of cyber security

We share our know-how. We advise which cyber security topics need to be addressed and how to proceed. And in the hacking stories section we bring real stories of attacks on Czech companies.


KRBTGT: Architecture, Trusts, PAC, and the Evolution of Ticket Attacks

KRBTGT is an account object, but its purpose is systemic. In practice it is rarely touched except for hygiene or recovery.


Looking back at 2025

The year 2025 was a year of intense change for us at Cyber Rangers. In a world where cybersecurity increasingly intersects with regulation, technological development, and responsibility, we focused primarily on setting an example for our customers. We are well aware that cybersecurity and a responsible and systematic approach are never-ending processes. That is why we strive for long-term sustainability and the highest possible quality of our services. It is the quality of the services we provide that demonstrates our professionalism and responsible approach.


Cyber Rangers na Qubit Conference Prague 2025

Towards the end of May, I had the opportunity to attend one of the leading cybersecurity conferences in Central Europe, Qubit Conference Prague 2025.


LLMNR Poisoning in practice!

Today, we will demonstrate a critical vulnerability in LLMNR, or Link-Local Multicast Name Resolution. We will describe how an attacker proceeds when attacking using the Responder tool and how to effectively defend against this security risk.


Trénink Financujte kybernetickou bezpečnost efektivně - na základě spočítaných rizik

Kvantitativní analýza kybernetických rizik není jen o nástrojích a algoritmech, ale hlavně o porozumění a správném výkladu dat. Měřitelné údaje jsou klíčové pro efektivní kybernetickou bezpečnost, avšak jejich interpretace a aplikace vyžadují nejen technickou zdatnost, ale také vhled a strategické uvažování.


SOC is about people. And it's not for everyone.

SOC everywhere you look and for everyone the consolation of cybersecurity assurance. But that is not the case today. SOC is all about people and not technology. And not every organization can effectively adapt SOC from day to day.