A personal blog built with GitHub Actions for writing and recording.https://excalibra.github.io/https://excalibra.github.io/posts/20260411133500/https://excalibra.github.io/posts/20260411133500/An in-depth exploration of self-mutating malware techniques, from polymorphic engines to metamorphic code, and how these evolutionary strategies enable malicious payloads to evade signature-based detection and traditional antivirus defenses.Sat, 11 Apr 2026 00:00:00 GMThttps://excalibra.github.io/posts/20260408210400/https://excalibra.github.io/posts/20260408210400/In-depth analysis of the recent Russian expulsion of British diplomats Michael Skinner, Tabassum Parveen Rashid, and Albertus van Rensburg, revealing a major shift in the UK-Russia intelligence confrontation toward economic resilience and the systematic dismantling of Britain’s HUMINT network in Moscow.Wed, 08 Apr 2026 00:00:00 GMThttps://excalibra.github.io/posts/20260408190100/https://excalibra.github.io/posts/20260408190100/FortiGuard Labs has uncovered a new campaign by the North Korea-linked Kimsuky group using GitHub as Command-and-Control infrastructure. The multi-stage attack begins with phishing LNK files, employs heavy anti-VM and anti-analysis techniques, establishes persistence via scheduled tasks, and exfiltrates data to attacker-controlled GitHub repositories.Wed, 08 Apr 2026 00:00:00 GMThttps://excalibra.github.io/posts/20260408171400/https://excalibra.github.io/posts/20260408171400/A threat actor has claimed to be selling a U.S. Department of Defense (DoD) **CMMC** cybersecurity briefing document. The document focuses on the core elements of the **CMMC 2.0** framework, including its implementation processes, compliance requirements, and supporting systems. It serves as a standardized cybersecurity compliance guidance document targeted at Defense Industrial Base (DIB) contractors.Wed, 08 Apr 2026 00:00:00 GMThttps://excalibra.github.io/posts/20260330215040/https://excalibra.github.io/posts/20260330215040/An in-depth analysis of EDR/XDR evasion techniques from a red team perspective, covering API unhooking, BOF-based in-memory execution, indirect system calls, ETW bypass, kernel callback evasion, and multi-technique coordination strategies.Mon, 30 Mar 2026 21:50:40 GMThttps://excalibra.github.io/posts/20260330214900/https://excalibra.github.io/posts/20260330214900/A threat actor leaked a confidential PDF document concerning the Vice President of Cybersecurity position at defense contractor Raytheon, exposing organizational structure, security priorities, and potential attack vectors for targeted espionage.Mon, 30 Mar 2026 00:00:00 GMThttps://excalibra.github.io/posts/20260330223100/https://excalibra.github.io/posts/20260330223100/A threat actor claims to be selling leaked confidential documents from defense contractor Lockheed Martin, detailing RFID edge software solutions and deployment outcomes for the U.S. Department of Defense.Mon, 30 Mar 2026 00:00:00 GMThttps://excalibra.github.io/posts/20250122180600/https://excalibra.github.io/posts/20250122180600/Overview of Apple Business Manager (ABM) for enterprise device management, including Managed Apple IDs, DEP, VPP, and MDM integration for centralized control of corporate Apple devices.Wed, 22 Jan 2025 00:00:00 GMThttps://excalibra.github.io/posts/20250122183900/https://excalibra.github.io/posts/20250122183900/Three approaches to managing Macs in enterprise IT environments: integrating with Active Directory, using third-party tools like Centrify or JAMF Casper Suite, and treating Macs as mobile devices with MDM.Wed, 22 Jan 2025 00:00:00 GMThttps://excalibra.github.io/posts/20250120072500/https://excalibra.github.io/posts/20250120072500/Explanation of the differences between computer sleep and hibernate modes, including data storage locations, wake-up methods, speeds, and step-by-step instructions for enabling hibernate in Windows 7 and Windows 10.Mon, 20 Jan 2025 00:00:00 GMThttps://excalibra.github.io/posts/20241209195800/https://excalibra.github.io/posts/20241209195800/Analysis of GitHub RST and Git SSL_ERR_SYSCALL issues, including network resets, proxy configuration problems, and ICMP filtering.Mon, 09 Dec 2024 00:00:00 GMThttps://excalibra.github.io/posts/20241209010143/https://excalibra.github.io/posts/20241209010143/Solutions for slow GitHub downloads, Git clone speeds, and environment package managers including pip, gem, and npm with mirror configurations.Mon, 09 Dec 2024 00:00:00 GMT