Denny Fischer
LightNews LightNews
banner
df-sec.bsky.social
Denny Fischer
@df-sec.bsky.social
110 followers 91 following 100 posts
IT-Security Consultant | Problem Solver | Father | Twitter: @df_sec (https://twitter.com/df_sec) | Mastodon: @[email protected] (https://infosec.exchange/@df_sec)
Posts Replies Media Videos
df-sec.bsky.social
From spoofing to tunnelling: New Red Team networking techniques for initial access and evasion

blog.apnic.net/2026/01/16/f...

#infosec #redteam
From spoofing to tunnelling: New Red Team networking techniques for initial access and evasion | APNIC Blog
Guest Post: In modern network architecture, we often assume that perimeter defences are robust enough to keep internal traffic secure. However, vulnerabilities inherent in the trust mechanisms of fund...
blog.apnic.net
February 3, 2026 at 9:55 PM
df-sec.bsky.social
TaskHound hunts privileged Windows scheduled tasks and exports them for BloodHound attack path analysis.

github.com/1r0BIT/TaskH...

#infosec #pentest #redteam
GitHub - 1r0BIT/TaskHound: Tool to enumerate privileged Scheduled Tasks on Remote Systems
Tool to enumerate privileged Scheduled Tasks on Remote Systems - 1r0BIT/TaskHound
github.com
January 29, 2026 at 7:34 PM
df-sec.bsky.social
NetExec Lab is a set of hands-on labs used in the NetExec workshop and CTF to help you mastering NetExec for your next pentest engagement.

github.com/Pennyw0rth/N...

#infosec #pentest
GitHub - Pennyw0rth/NetExec-Lab: Lab used for workshop and CTF
Lab used for workshop and CTF. Contribute to Pennyw0rth/NetExec-Lab development by creating an account on GitHub.
github.com
January 24, 2026 at 8:44 PM
df-sec.bsky.social
Extracts browser-stored data such as refresh tokens, cookies, saved credentials and more from modern Chromium-based and Gecko-based browsers (Chrome, Microsoft Edge, Firefox, Opera, Opera GX and Vivaldi).

github.com/Maldev-Acade...

#infosec #pentest #redteam
GitHub - Maldev-Academy/DumpBrowserSecrets: Extracts browser-stored data such as refresh tokens, cookies, saved credentials, credit cards, autofill entries, browsing history, and bookmarks from modern...
Extracts browser-stored data such as refresh tokens, cookies, saved credentials, credit cards, autofill entries, browsing history, and bookmarks from modern Chromium-based and Gecko-based browsers ...
github.com
January 20, 2026 at 9:24 PM
df-sec.bsky.social
Many cybersecurity myths are outdated and distract from real risks. An open letter calling for practical, evidence-based security advice.

Read more: www.hacklore.org/letter

#infosec
The Letter — Stop Hacklore!
www.hacklore.org
January 7, 2026 at 11:32 AM
df-sec.bsky.social
ProfileHound is a tool that enumerates Windows domain user profiles via the C$ share and exports them to BloodHound as a HasUserProfile edge making it easy to see which users have profiles on which hosts.

github.com/m4lwhere/pro...

#infosec #pentest #redteam
GitHub - m4lwhere/profilehound: ProfileHound - BloodHound OpenGraph collector for user profiles stored on domain machines. Make informed decisions about looting secrets by identifying active user prof...
ProfileHound - BloodHound OpenGraph collector for user profiles stored on domain machines. Make informed decisions about looting secrets by identifying active user profiles on domain machines. - m4...
github.com
January 5, 2026 at 1:46 PM
df-sec.bsky.social
Native Sysmon functionality coming to Windows

techcommunity.microsoft.com/blog/windows...

#infosec #blueteam
Native Sysmon functionality coming to Windows | Microsoft Community Hub
Learn how to eliminate manual deployment and reduce operational risk with Sysmon functionality in Windows.     
techcommunity.microsoft.com
November 23, 2025 at 10:33 PM
df-sec.bsky.social
"HELP! MY ACCOUNT GOT HACKED!" - Business Email Compromise (BEC) Part 1

www.truesec.com/hub/blog/hel...

"The Anatomy of a Business Email Compromise Attack" - Business Email Compromise (BEC) Part 2

www.truesec.com/hub/blog/the...

#infosec #blueteam
September 25, 2025 at 5:54 PM
df-sec.bsky.social
Harden Windows Security is an open source PowerShell module (with GUI/CLI/Unattended mode) that documents, automates and hardens Windows security settings based on supported Microsoft mechanisms

github.com/HotCakeX/Har...

#infosec #blueteam
GitHub - HotCakeX/Harden-Windows-Security: Harden Windows Safely, Securely using Official Supported Microsoft methods and proper explanation | Always up-to-date and works with the latest build of Wind...
Harden Windows Safely, Securely using Official Supported Microsoft methods and proper explanation | Always up-to-date and works with the latest build of Windows | Provides tools and Guides for Pers...
github.com
August 29, 2025 at 7:50 PM
df-sec.bsky.social
Prowler is an open-source security tool that helps assess and enforce security best practices across AWS, Azure, Google Cloud and Kubernetes.

github.com/prowler-clou...

#infosec #blueteam
GitHub - prowler-cloud/prowler: Prowler is the Open Cloud Security platform for AWS, Azure, GCP, Kubernetes, M365 and more. It helps for continuous monitoring, security assessments & audits, incident ...
Prowler is the Open Cloud Security platform for AWS, Azure, GCP, Kubernetes, M365 and more. It helps for continuous monitoring, security assessments & audits, incident response, compliance, har...
github.com
July 22, 2025 at 6:08 PM
df-sec.bsky.social
Ransomware Tool Matrix by @bushidotoken.net: This repository lists tools used by ransomware gangs. Defenders can detect and block these commonly reused tools to stop intrusions.

github.com/BushidoUK/Ra...

#infosec #blueteam
GitHub - BushidoUK/Ransomware-Tool-Matrix: A resource containing all the tools each ransomware gangs uses
A resource containing all the tools each ransomware gangs uses - BushidoUK/Ransomware-Tool-Matrix
github.com
May 7, 2025 at 3:16 PM
df-sec.bsky.social
State-of-the-art phishing: MFA bypass by Jaeson Schultz @talosintelligence.com

blog.talosintelligence.com/state-of-the...

#infosec #blueteam
State-of-the-art phishing: MFA bypass
Threat actors are bypassing MFA with adversary-in-the-middle attacks via reverse proxies. Phishing-as-a-Service tools like Evilproxy make these threats harder to detect.
blog.talosintelligence.com
May 5, 2025 at 1:10 PM
df-sec.bsky.social
ArgFuscator is an open-source web app that generates obfuscated command lines for common system tools. Great for testing your defenses against real-world attack techniques.

argfuscator.net

#infosec #pentest #redteam #blueteam
ArgFuscator
Generate obfuscated command-line arguments for common system-native executables now with ArgFuscator.
argfuscator.net
March 31, 2025 at 5:28 PM
df-sec.bsky.social
How well do you protect your privacy?
The Privacy Checkup helps you assess your online surveillance defenses and take steps to protect your data.

privacy-checkup.info (English, Deutsch, Español)

#privacy #infosec
Privacy Checkup: How well do you protect your privacy?
The Privacy Checkup was launched as part of Data Privacy Week 2024 and helps you to determine whether or not you’re sufficiently protecting your data online.
privacy-checkup.info
March 30, 2025 at 2:04 PM
df-sec.bsky.social
A great read on the exploitation of VMware vulnerabilities - from both attacker and defender perspectives - plus practical recommendations to strengthen your security posture.

"Breaking the Virtual Barrier: From Web-Shell to Ransomware"

www.sygnia.co/threat-repor...

#infosec #blueteam
Breaking the Virtual Barrier: From Web-Shell to Ransomware
Recent VMware vulnerabilities have reignited the threat of VM escapes, enabling attackers to bypass security controls and deploy ransomware. Learn how adversaries exploit these flaws and how to streng...
www.sygnia.co
March 29, 2025 at 8:22 PM
df-sec.bsky.social
Eine kriminelle Organisation hinter mehr als 75.000 Fake-Shops, >1 Mio. Bestellungen & >$50M Schaden. Einblick in ihr ausgeklügeltes System & wie sie Käufer täuschen.

#38C3: "Fake-Shops von der Stange: BogusBazaar" mit @kaibiermann.bsky.social und kantorkel.
media.ccc.de/v/38c3-fake-...

#infosec
Fake-Shops von der Stange: BogusBazaar
Du bestellst im Internet? Natürlich bestellst Du im Internet. Aber dieses Mal wird Deine Ware nicht geliefert. Stattdessen sind Dein Geld...
media.ccc.de
January 2, 2025 at 10:51 AM
df-sec.bsky.social
"Mastering Sysmon: Deploying, Configuring, and Fine-Tuning"
A free mini eBook for #DFIR professionals with practical steps to deploy, fine-tune, and start logging with Sysmon.

dfirinsights.com/2024/11/27/m...

#infosec #blueteam
Mastering Sysmon free DFIR e-book release - DFIR Insights
Today is the day! I'm announcing the release of my guide: "Mastering Sysmon: Deploying, Configuring, and Fine-Tuning", a free mini eBook designed specifically for digital forensics and incident respon...
dfirinsights.com
December 16, 2024 at 11:18 AM
Reposted by Denny Fischer
ccc.de
Welche Daten enthält die elektronische #Patientenakte und was bedeutet sie für die ärztliche Schweigepflicht?
Die elektronische Patientenakte (ePA) kommt im Januar – ist ein Opt-Out sinnvoll? – Datenschutz – Unter dem Radar
Datenschutz – Unter dem Radar
blogs.tu-berlin.de
December 12, 2024 at 11:16 PM
df-sec.bsky.social
Carseat is a Python implementation of GhostPack's Seatbelt, a situational awareness tool for analyzing Windows security configurations.

github.com/0xthirteen/C...

#infosec #pentest #redteam
GitHub - 0xthirteen/Carseat: Python implementation of GhostPack's Seatbelt situational awareness tool
Python implementation of GhostPack's Seatbelt situational awareness tool - 0xthirteen/Carseat
github.com
December 9, 2024 at 7:21 PM
df-sec.bsky.social
The fascinating security model of dark web marketplaces by @boehs.org

boehs.org/node/dark-we...

#infosec
The fascinating security model of dark web marketplaces
Captchas, Monero, Scams and absolutely no JavaScript
boehs.org
December 2, 2024 at 8:41 PM
df-sec.bsky.social
That's a Cybersecurity Advisory worth reading, with many important points to note.

Enhancing Cyber Resilience: Insights from CISA Red Team Assessment of a US Critical Infrastructure Sector Organization
www.cisa.gov/news-events/...

#infosec #blueteam
Enhancing Cyber Resilience: Insights from CISA Red Team Assessment of a US Critical Infrastructure Sector Organization | CISA
www.cisa.gov
November 24, 2024 at 1:54 PM
df-sec.bsky.social
LOLESXi features a comprehensive list of binaries/scripts natively available in VMware ESXi that adversaries have utilised in their operations.

lolesxi-project.github.io/LOLESXi/

#infosec #pentest #redteam #blueteam
LOLESXi
lolesxi-project.github.io
November 8, 2024 at 12:36 PM
df-sec.bsky.social
Phishing remains one of the most widespread cyberattacks - here are some tips on how to avoid falling victim!

5 Phishing Email Scams and How NOT To Fall For Them
www.huntress.com/blog/5-phish...

#infosec
5 Phishing Email Scams and How NOT To Fall For Them | Huntress
Explore the art of phishing, learn how to spot common phishing scams and red flags, and understand the importance of security awareness training.
www.huntress.com
October 24, 2024 at 12:16 PM
df-sec.bsky.social
🚨 Exciting news for all hackers and tech enthusiasts! The #DEFCON32 talks are now available on YouTube! 🎉

youtube.com/playlist?lis...

#infosec #pentest #redteam #blueteam
DEF CON 32 Main Stage Talks - YouTube
youtube.com
October 18, 2024 at 6:36 PM
df-sec.bsky.social
A tool that uses the Windows Filtering Platform (WFP) to block Endpoint Detection and Response (EDR) agents from reporting security events to the server.

github.com/netero1010/E...

#infosec #pentest #redteam
GitHub - netero1010/EDRSilencer: A tool uses Windows Filtering Platform (WFP) to block Endpoint Detection and Response (EDR) agents from reporting security events to the server.
A tool uses Windows Filtering Platform (WFP) to block Endpoint Detection and Response (EDR) agents from reporting security events to the server. - netero1010/EDRSilencer
github.com
October 17, 2024 at 5:31 PM