Hey SDDL SDDL: Breaking Down Windows Security One ACE at a Time www.splunk.com/en_us/blog/s....
Thrilled to share my first blog at @splunk! @mhaggis.bsky.social and I take a deep dive into the weird & exciting world of SDDL and ACEs - what they are, how they work, and how attackers can abuse them.
Thrilled to share my first blog at @splunk! @mhaggis.bsky.social and I take a deep dive into the weird & exciting world of SDDL and ACEs - what they are, how they work, and how attackers can abuse them.
Hey SDDL SDDL: Breaking Down Windows Security One ACE at a Time | Splunk
Explore SDDL in Windows security with our comprehensive guide to help enhance your defensive strategy against privilege escalation attacks.
www.splunk.com
February 15, 2025 at 10:36 PM
Hey SDDL SDDL: Breaking Down Windows Security One ACE at a Time www.splunk.com/en_us/blog/s....
Thrilled to share my first blog at @splunk! @mhaggis.bsky.social and I take a deep dive into the weird & exciting world of SDDL and ACEs - what they are, how they work, and how attackers can abuse them.
Thrilled to share my first blog at @splunk! @mhaggis.bsky.social and I take a deep dive into the weird & exciting world of SDDL and ACEs - what they are, how they work, and how attackers can abuse them.
🔐 Windows Security and SDDL: What You Need to Know 🔐
Windows permissions misconfigurations are a goldmine for attackers. SDDL (Security Descriptor Definition Language) remains overlooked yet highly exploitable. 🚨
@nasbench.bsky.social and I break it down -->
🧵 (1/)
Windows permissions misconfigurations are a goldmine for attackers. SDDL (Security Descriptor Definition Language) remains overlooked yet highly exploitable. 🚨
@nasbench.bsky.social and I break it down -->
🧵 (1/)
February 21, 2025 at 3:55 PM
🔐 Windows Security and SDDL: What You Need to Know 🔐
Windows permissions misconfigurations are a goldmine for attackers. SDDL (Security Descriptor Definition Language) remains overlooked yet highly exploitable. 🚨
@nasbench.bsky.social and I break it down -->
🧵 (1/)
Windows permissions misconfigurations are a goldmine for attackers. SDDL (Security Descriptor Definition Language) remains overlooked yet highly exploitable. 🚨
@nasbench.bsky.social and I break it down -->
🧵 (1/)
Got an SDDL (Security Descriptor Definition Language) that you want to decode? PowerShell has ConvertFrom-
SddlString
SddlString
February 12, 2025 at 2:11 PM
Got an SDDL (Security Descriptor Definition Language) that you want to decode? PowerShell has ConvertFrom-
SddlString
SddlString
🌐 Get-ADUser -Filter * won’t cut it in a big AD.
At #PSConfEU 2025, @it-pro-berlin.de showed how to scale #PowerShell with:
✔ OpenAD
✔ Indexed queries
✔ Smart group handling & SDDL tips
🎟️ Early bird 2026 → psconf.eu
#ActiveDirectory #Automation
At #PSConfEU 2025, @it-pro-berlin.de showed how to scale #PowerShell with:
✔ OpenAD
✔ Indexed queries
✔ Smart group handling & SDDL tips
🎟️ Early bird 2026 → psconf.eu
#ActiveDirectory #Automation
- YouTube
Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.
youtu.be
August 5, 2025 at 10:00 AM
🌐 Get-ADUser -Filter * won’t cut it in a big AD.
At #PSConfEU 2025, @it-pro-berlin.de showed how to scale #PowerShell with:
✔ OpenAD
✔ Indexed queries
✔ Smart group handling & SDDL tips
🎟️ Early bird 2026 → psconf.eu
#ActiveDirectory #Automation
At #PSConfEU 2025, @it-pro-berlin.de showed how to scale #PowerShell with:
✔ OpenAD
✔ Indexed queries
✔ Smart group handling & SDDL tips
🎟️ Early bird 2026 → psconf.eu
#ActiveDirectory #Automation
Top 3 Things You'll Learn:
1️⃣ How attackers exploit SDDL—event log tampering, service hardening, & more
2️⃣ How to decode SDDL strings & analyze permissions, DACLs, and ACEs
3️⃣ How to defend against SDDL abuse with detections & Atomic Red Team tests
🧵 (3/)
1️⃣ How attackers exploit SDDL—event log tampering, service hardening, & more
2️⃣ How to decode SDDL strings & analyze permissions, DACLs, and ACEs
3️⃣ How to defend against SDDL abuse with detections & Atomic Red Team tests
🧵 (3/)
February 21, 2025 at 3:55 PM
Top 3 Things You'll Learn:
1️⃣ How attackers exploit SDDL—event log tampering, service hardening, & more
2️⃣ How to decode SDDL strings & analyze permissions, DACLs, and ACEs
3️⃣ How to defend against SDDL abuse with detections & Atomic Red Team tests
🧵 (3/)
1️⃣ How attackers exploit SDDL—event log tampering, service hardening, & more
2️⃣ How to decode SDDL strings & analyze permissions, DACLs, and ACEs
3️⃣ How to defend against SDDL abuse with detections & Atomic Red Team tests
🧵 (3/)
I needed an ACL Viewer that has dark mode, shows file ACLs as well and had fast SDDL/ACCESS_MASK parsing. So I ended up having to make my own.
Link: github.com/WildByDesign/ACLViewer
Link: github.com/WildByDesign/ACLViewer
March 8, 2025 at 1:43 PM
I needed an ACL Viewer that has dark mode, shows file ACLs as well and had fast SDDL/ACCESS_MASK parsing. So I ended up having to make my own.
Link: github.com/WildByDesign/ACLViewer
Link: github.com/WildByDesign/ACLViewer
💡 Need to decode or generate SDDL? Try SDDLMaker 🔧
👉 https://thesddlmaker.streamlit.app/
📜 Read the full blog:
🔗 https://www.splunk.com/en_us/blog/security/windows-security-sddl-guide-access-control.html
🧵 (4/)
👉 https://thesddlmaker.streamlit.app/
📜 Read the full blog:
🔗 https://www.splunk.com/en_us/blog/security/windows-security-sddl-guide-access-control.html
🧵 (4/)
SDDL Parser
Welcome to , a handcrafted bespoke tool to revolutionize the way you build and analyze Windows Se...
thesddlmaker.streamlit.app
February 21, 2025 at 3:55 PM
💡 Need to decode or generate SDDL? Try SDDLMaker 🔧
👉 https://thesddlmaker.streamlit.app/
📜 Read the full blog:
🔗 https://www.splunk.com/en_us/blog/security/windows-security-sddl-guide-access-control.html
🧵 (4/)
👉 https://thesddlmaker.streamlit.app/
📜 Read the full blog:
🔗 https://www.splunk.com/en_us/blog/security/windows-security-sddl-guide-access-control.html
🧵 (4/)
🌐 Get-ADUser -Filter * won’t cut it in a big AD.
At #PSConfEU 2025, @it-pro-berlin.de showed how to scale #PowerShell with:
✔ OpenAD
✔ Indexed queries
✔ Smart group handling & SDDL tips
🎟️ Early bird 2026 → psconf.eu
#ActiveDirectory #Automation
At #PSConfEU 2025, @it-pro-berlin.de showed how to scale #PowerShell with:
✔ OpenAD
✔ Indexed queries
✔ Smart group handling & SDDL tips
🎟️ Early bird 2026 → psconf.eu
#ActiveDirectory #Automation
- YouTube
Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.
youtu.be
August 29, 2025 at 1:00 PM
🌐 Get-ADUser -Filter * won’t cut it in a big AD.
At #PSConfEU 2025, @it-pro-berlin.de showed how to scale #PowerShell with:
✔ OpenAD
✔ Indexed queries
✔ Smart group handling & SDDL tips
🎟️ Early bird 2026 → psconf.eu
#ActiveDirectory #Automation
At #PSConfEU 2025, @it-pro-berlin.de showed how to scale #PowerShell with:
✔ OpenAD
✔ Indexed queries
✔ Smart group handling & SDDL tips
🎟️ Early bird 2026 → psconf.eu
#ActiveDirectory #Automation
Stable Diffusion just updated and it's going really well everyone is coping with it very normally
June 15, 2024 at 12:15 PM
Stable Diffusion just updated and it's going really well everyone is coping with it very normally
Sécheresse : "Cela fait mal au cœur", des policiers de Canteleu sauvent une buse assoiffée en forêt
➡️ https://l.ici.fr/sddl
➡️ https://l.ici.fr/sddl
August 13, 2026 at 4:55 PM
Sécheresse : "Cela fait mal au cœur", des policiers de Canteleu sauvent une buse assoiffée en forêt
➡️ https://l.ici.fr/sddl
➡️ https://l.ici.fr/sddl
OpenZL is a new open-source, format-aware compression framework sparking buzz on Hacker News. Users are exploring its potential apps, comparisons to existing methods, and future. Key interest: leveraging data structure for improved ratios & SDDL flexibility. #OpenZL 1/5
October 7, 2025 at 7:00 PM
OpenZL is a new open-source, format-aware compression framework sparking buzz on Hacker News. Users are exploring its potential apps, comparisons to existing methods, and future. Key interest: leveraging data structure for improved ratios & SDDL flexibility. #OpenZL 1/5
In our latest blog, we break down SDDL: 🔹 How it structures Windows security
🔹 How attackers—from LockBit to RomCom—manipulate it for privilege escalation & defense evasion
🔹 How to detect & defend 🛡️
🧵 (2/)
🔹 How attackers—from LockBit to RomCom—manipulate it for privilege escalation & defense evasion
🔹 How to detect & defend 🛡️
🧵 (2/)
February 21, 2025 at 3:55 PM
In our latest blog, we break down SDDL: 🔹 How it structures Windows security
🔹 How attackers—from LockBit to RomCom—manipulate it for privilege escalation & defense evasion
🔹 How to detect & defend 🛡️
🧵 (2/)
🔹 How attackers—from LockBit to RomCom—manipulate it for privilege escalation & defense evasion
🔹 How to detect & defend 🛡️
🧵 (2/)
🌐 Get-ADUser -Filter * won’t cut it in a big AD.
At #PSConfEU 2025, @it-pro-berlin.de showed how to scale #PowerShell with:
✔ OpenAD
✔ Indexed queries
✔ Smart group handling & SDDL tips
🎟️ Early bird 2026 → psconf.eu
#ActiveDirectory #Automation
At #PSConfEU 2025, @it-pro-berlin.de showed how to scale #PowerShell with:
✔ OpenAD
✔ Indexed queries
✔ Smart group handling & SDDL tips
🎟️ Early bird 2026 → psconf.eu
#ActiveDirectory #Automation
- YouTube
Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.
youtu.be
February 16, 2026 at 4:30 PM
🌐 Get-ADUser -Filter * won’t cut it in a big AD.
At #PSConfEU 2025, @it-pro-berlin.de showed how to scale #PowerShell with:
✔ OpenAD
✔ Indexed queries
✔ Smart group handling & SDDL tips
🎟️ Early bird 2026 → psconf.eu
#ActiveDirectory #Automation
At #PSConfEU 2025, @it-pro-berlin.de showed how to scale #PowerShell with:
✔ OpenAD
✔ Indexed queries
✔ Smart group handling & SDDL tips
🎟️ Early bird 2026 → psconf.eu
#ActiveDirectory #Automation
🛠️ Splunk Security Content:
🔗 https://research.splunk.com/stories/defense_evasion_or_unauthorized_access_via_sddl_tampering/
🧠 Mind Map:
🔗 https://github.com/MHaggis/SDDLMaker/tree/main/MindMap
🧵 (5/)
🔗 https://research.splunk.com/stories/defense_evasion_or_unauthorized_access_via_sddl_tampering/
🧠 Mind Map:
🔗 https://github.com/MHaggis/SDDLMaker/tree/main/MindMap
🧵 (5/)
Analytics Story: Defense Evasion or Unauthorized Access Via SDDL Tampering
Date: 2024-12-06 ID: 8ccdd852-3878-4871-ae37-e5af5c67baf3 Author: Nasreddine Bencherchali, Michael Haag, Splunk Product: Splunk Enterprise Security Description This analytic story focuses on…
research.splunk.com
February 21, 2025 at 3:55 PM
🛠️ Splunk Security Content:
🔗 https://research.splunk.com/stories/defense_evasion_or_unauthorized_access_via_sddl_tampering/
🧠 Mind Map:
🔗 https://github.com/MHaggis/SDDLMaker/tree/main/MindMap
🧵 (5/)
🔗 https://research.splunk.com/stories/defense_evasion_or_unauthorized_access_via_sddl_tampering/
🧠 Mind Map:
🔗 https://github.com/MHaggis/SDDLMaker/tree/main/MindMap
🧵 (5/)
🎥 Want a deeper dive? Check out Atomics on a Friday, where we introduce SDDLMaker!
▶️ https://www.youtube.com/watch?v=uSYvHUVU8xY
🔄 RT/Reshare if you find this useful! 🚀
#WindowsSecurity #SDDL #Cybersecurity #Splunk #AtomicRedTeam
▶️ https://www.youtube.com/watch?v=uSYvHUVU8xY
🔄 RT/Reshare if you find this useful! 🚀
#WindowsSecurity #SDDL #Cybersecurity #Splunk #AtomicRedTeam
Atomics on a Tuesday || Introducing The SDDLMaker
🌟 🔬 In this EXTRAORDINARY episode of Atomics on a Tuesday 🎯, we venture deep into the mysterious realm of Windows Security Descriptor Definition Language ...
www.youtube.com
February 21, 2025 at 3:56 PM
🎥 Want a deeper dive? Check out Atomics on a Friday, where we introduce SDDLMaker!
▶️ https://www.youtube.com/watch?v=uSYvHUVU8xY
🔄 RT/Reshare if you find this useful! 🚀
#WindowsSecurity #SDDL #Cybersecurity #Splunk #AtomicRedTeam
▶️ https://www.youtube.com/watch?v=uSYvHUVU8xY
🔄 RT/Reshare if you find this useful! 🚀
#WindowsSecurity #SDDL #Cybersecurity #Splunk #AtomicRedTeam
Nový rychlý kompresní formát od Meta: OpenZL
Nový rychlý kompresní formát od Meta: OpenZL
Meta (Facebook) má již jeden kompresní formát Zstd. Ten je však obecný a komprimuje všechna data stejně, bez ohledu na obsah. V pondělí byl představen nový OpenZL, za kterým stojí také Yann Collet (Zstd a LZ4). OpenZL naopak potřebuje vědět u každého souboru, jak vypadá jeho obsah. Díky tomu dosahuje lepší komprese a také větší rychlosti než generické algoritmy.
Data mohou být popsána pomocí SDDL (Simple Data Description Language), nebo může být kompresor experimentálně trénován na datech, kdy postupně zkouší všechny strategie. OpenZL je napsán v C/C++ jako open source pod licencí BSD a v pondělí vyšlo ve verzi 0.1.0. Zdrojové kódy jsou na GitHubu. Více detailů naleznete v článku.
(zdroj: phoronix)
Autor: Meta
www.root.cz
October 10, 2025 at 12:30 PM
Nový rychlý kompresní formát od Meta: OpenZL
圧縮対象のデータに構造が存在する場合に、それを SDDL という DSL で書き表すことで構造に適したエンコーダーを構成して圧縮する仕組みみたい。また圧縮データ内にどうやって復号すべきかを指示する「レシピ」が含まれているので、デコーダーはエンコーダーの構成によらずどの圧縮データも復号できるようになっているっぽい。なるほど…
engineering.fb.com/2025/10/06/d...
engineering.fb.com/2025/10/06/d...
Introducing OpenZL: An Open Source Format-Aware Compression Framework
OpenZL is a new open source data compression framework that offers lossless compression for structured data. OpenZL is designed to offer the performance of a format-specific compressor with the eas…
engineering.fb.com
October 10, 2025 at 2:44 AM
圧縮対象のデータに構造が存在する場合に、それを SDDL という DSL で書き表すことで構造に適したエンコーダーを構成して圧縮する仕組みみたい。また圧縮データ内にどうやって復号すべきかを指示する「レシピ」が含まれているので、デコーダーはエンコーダーの構成によらずどの圧縮データも復号できるようになっているっぽい。なるほど…
engineering.fb.com/2025/10/06/d...
engineering.fb.com/2025/10/06/d...
Hydratracker/darkino remplacant d'Ygg ferme. Enfin. L'énorme f2p qui s'était fait hacké de l'interieur, pour avoir transformé un gratuit sddl libre en torrent payant privé, n'a evidemment pas tenu le choc, et se barre avec la caisse (des millions). www.reddit.com/r/FrancePira...
From the FrancePirate community on Reddit
Explore this post and more from the FrancePirate community
www.reddit.com
September 3, 2026 at 4:42 PM
Hydratracker/darkino remplacant d'Ygg ferme. Enfin. L'énorme f2p qui s'était fait hacké de l'interieur, pour avoir transformé un gratuit sddl libre en torrent payant privé, n'a evidemment pas tenu le choc, et se barre avec la caisse (des millions). www.reddit.com/r/FrancePira...
A Bank of America phishing scam delivers a disguised ScreenConnect RAT. The malware uses a UAC bypass and modifies service permissions with SDDL to achieve stealthy, persistent access. #Phishing #Malware #ScreenConnect #DefenseEvasion
🌐 cyber[.]netsecops[.]io
🌐 cyber[.]netsecops[.]io
Bank of America Phishing Delivers ScreenConnect RAT via UAC Bypass
A phishing campaign impersonating Bank of America uses a UAC bypass technique to install a hidden ScreenConnect RAT, giving attackers persistent remote...
cyber.netsecops.io
August 5, 2026 at 4:02 PM
A Bank of America phishing scam delivers a disguised ScreenConnect RAT. The malware uses a UAC bypass and modifies service permissions with SDDL to achieve stealthy, persistent access. #Phishing #Malware #ScreenConnect #DefenseEvasion
🌐 cyber[.]netsecops[.]io
🌐 cyber[.]netsecops[.]io
Getting sddl string for ACLS with ACEs having Conditional Access Policy (114127) https://github.com/dotnet/runtime/issues/114127
Getting sddl string for ACLS with ACEs having Conditional Access Policy · Issue #114127 · dotnet/runtime
Description Would it be possible to support Conditional Aces for below function ? https://github.com/mono/mono/blob/main/mcs/class/corlib/System.Security.AccessControl/CommonAce.cs ` internal overr...
github.com
April 1, 2025 at 10:38 PM
Getting sddl string for ACLS with ACEs having Conditional Access Policy (114127) https://github.com/dotnet/runtime/issues/114127
Sovereignty and Canadians first.
www.youtube.com/watch?v=sddl...
www.youtube.com/watch?v=sddl...
USA STUNNED: CANADA Flips the Script on DEFENCE: Trump will LOSE His $19B Defense Monopoly NOW!
YouTube video by The Planet D
www.youtube.com
May 10, 2026 at 1:08 PM
Sovereignty and Canadians first.
www.youtube.com/watch?v=sddl...
www.youtube.com/watch?v=sddl...
these bizzare microsoft webview experience pack shxitballs are w a y too hideous how they punch holes intothe firewall over svchost this stinks .@windowsdev #appalled_pokemon #thanks #superuser #superuser_com @superuser @cnet @techpowerup @wired @wireduk @debian @linux @windowsdev @radioshack…
these bizzare microsoft webview experience pack shxitballs are w a y too hideous how they punch holes intothe firewall over svchost this stinks .@windowsdev #appalled_pokemon #thanks #superuser #superuser_com @superuser @cnet @techpowerup @wired @wireduk @debian @linux @windowsdev @radioshack @ubuntu @pcwelt #bulk_copy_acl_permissions #roboo py_acl_permissions does anyone understand why #anonymous_logon in #sddl machine launch is necessary and how: local processes launched anonymo us without sddl id? ////
these bizzare microsoft webview experience pack shxitballs are w a y too hideous how they punch holes intothe firewall over svchost this stinks .@windowsdev #appalled_pokemon #thanks #superuser #superuser_com @superuser @cnet @techpowerup @wired @wireduk @debian @linux @windowsdev @radioshack @ubuntu @pcwelt #bulk_copy_acl_permissions #roboopy_acl_permissions does anyone understand why #anonymous_logon in #sddl machine launch is necessary and how: local processes launched anonymous without sddl id?
babyawacs.wordpress.com
February 3, 2025 at 12:38 AM
these bizzare microsoft webview experience pack shxitballs are w a y too hideous how they punch holes intothe firewall over svchost this stinks .@windowsdev #appalled_pokemon #thanks #superuser #superuser_com @superuser @cnet @techpowerup @wired @wireduk @debian @linux @windowsdev @radioshack…