Daily Writeups
@Daily_Writeups
4.1K subscribers
4 photos
138K links
Daily Bug Bounty / Cybersecurity Writeups
Source Code : https://github.com/Spix0r/writeup-miner
Download Telegram
About
Blog
Apps
Platform
Join
Daily Writeups
4.1K subscribers
Daily Writeups
⤷ Title: Chain of Trust in Secure Boot
════════════════════════
𐀪 Author: Epteck GmbH
════════════════════════
ⴵ Time: Mon, 08 Dec 2025 07:23:27 GMT
════════════════════════
⌗ Tags: #compliance_management #secure_boot #secure_by_design #cybersecurity #linux
Medium
Chain of Trust in Secure Boot
Secure boot is a fundamental security mechanism that guarantees a device only runs the trusted code it was designed to run. This process…
10 views
Daily Writeups
⤷ Title: Patch Tuesday Jan 2026: Microsoft Fixes 114 Flaws & 3 Zero-Days
════════════════════════
𐀪 Author: Ddos
════════════════════════
ⴵ Time: Wed, 14 Jan 2026 00:11:47 +0000
════════════════════════
⌗ Tags: #Vulnerability Report #Agere Soft Modem #CISA #CVE_2026_20805 #LSASS #Microsoft #Office Vulnerability #Patch Tuesday #Secure Boot #Windows Security #zero_day
Daily CyberSecurity
Patch Tuesday Jan 2026: Microsoft Fixes 114 Flaws & 3 Zero-Days
Microsoft Jan 2026 Patch Tuesday fixes 114 flaws, including 3 zero-days. CVE-2026-20805 is actively exploited. Update Windows & Office immediately.
28 views
Daily Writeups
⤷ Title: The June Deadline: Microsoft Issues Urgent Secure Boot Certificate Updates
════════════════════════
𐀪 Author: Ddos
════════════════════════
ⴵ Time: Thu, 15 Jan 2026 08:42:51 +0000
════════════════════════
⌗ Tags: #Windows #24H2 #25H2 #Certificate Rotation #Cybersecurity 2026 #Hardware Security #IT Administration #Microsoft #Secure Boot #UEFI #Windows 11
Daily CyberSecurity
The June Deadline: Microsoft Issues Urgent Secure Boot Certificate Updates
Microsoft begins rotating Secure Boot certificates in Jan 2026. Act now to prevent boot failures and maintain security before the June 2026 expiration.
16 views
Daily Writeups
⤷ Title: Microsoft’s 2026 Kickoff: 110+ Patches Fix Active Zero-Days and Office Flaws
════════════════════════
𐀪 Author: ddos
════════════════════════
ⴵ Time: Thu, 15 Jan 2026 08:24:36 +0000
════════════════════════
⌗ Tags: #Vulnerability #Windows #CVE_2026_20805 #cybersecurity #Infosec News #LSASS #Microsoft #Office 2026 #Patch Tuesday #RCE #Secure Boot #Windows 11 #zero_day
Penetration Testing Tools
Microsoft's 2026 Kickoff: 110+ Patches Fix Active Zero-Days and Office Flaws
Microsoft has inaugurated its first Patch Tuesday of 2026, disseminating a comprehensive suite of mandatory security remediations for
12 views
Daily Writeups
⤷ Title: Defeating the Epochalypse: GRUB 2.14 Arrives to Save Linux from Year 2038
════════════════════════
𐀪 Author: Ddos
════════════════════════
ⴵ Time: Fri, 16 Jan 2026 03:12:22 +0000
════════════════════════
⌗ Tags: #Linux #Argon2 #Bootloader #EROFS #GNU Project #GRUB 2.14 #NX Protection #Open Source 2026 #Secure Boot #TPM 2.0 #Year 2038
Daily CyberSecurity
Defeating the Epochalypse: GRUB 2.14 Arrives to Save Linux from Year 2038
GRUB 2.14 launches in Jan 2026, fixing the Year 2038 bug and adding Argon2, TPM 2.0, and EROFS support for the ultimate Linux boot security.
9 views
Daily Writeups
⤷ Title: The 15-Year Deadline: Microsoft Launches Massive “Secure Boot” Certificate Rotation Ahead of June 2026
════════════════════════
𐀪 Author: Ddos
════════════════════════
ⴵ Time: Wed, 11 Feb 2026 09:00:54 +0000
════════════════════════
⌗ Tags: #Windows #2011 CA #2023 CA #Certificate Expiration #Firmware Security #IT Administration #KB5025885 #Secure Boot #Tech News 2026 #UEFI #Windows 11 #Windows Update
Daily CyberSecurity
The 15-Year Deadline: Microsoft Launches Massive "Secure Boot" Certificate Rotation Ahead of June 2026
Microsoft is rotating UEFI Secure Boot certificates before they expire in June 2026. Ensure your PC stays secure by following this massive coordination effort.
11 views
Daily Writeups
⤷ Title: Proof-of-Concept Disclosed: New “BitUnlocker” Attack Bypasses Patched Windows 11 BitLocker via Certificate Downgrade
════════════════════════
𐀪 Author: Ddos
════════════════════════
ⴵ Time: Tue, 12 May 2026 01:01:32 +0000
════════════════════════
⌗ Tags: #Vulnerability Report #bitlocker #BitUnlocker #CVE_2025_48804 #downgrade attack #github #infosec #Intrinsec #Microsoft STORM #PoC #Secure Boot #TPM #Windows 11
Daily CyberSecurity
Proof-of-Concept Disclosed: New "BitUnlocker" Attack Bypasses Patched Windows 11 BitLocker via Certificate Downgrade
Public PoC Alert: The BitUnlocker Downgrade Attack bypasses BitLocker on patched Windows 11 machines in under 5 minutes. Learn how to secure your TPM with a PIN.
15 views
Daily Writeups
⤷ Title: Microsoft Explains the New “SecureBoot” Folder in Windows 11 KB5089549 Update
════════════════════════
𐀪 Author: Ddos
════════════════════════
ⴵ Time: Tue, 19 May 2026 05:43:42 +0000
════════════════════════
⌗ Tags: #Windows #C:\Windows\SecureBoot #Detect_SecureBootCertUpdateStatus #Device Security #Enterprise Fleet Management #KB5089549 #PowerShell Script #Secure Boot Expiration #Trust Chain Renovation #UEFI CA 2023 #Windows 11 May Update
Daily CyberSecurity
Microsoft Explains the New "SecureBoot" Folder in Windows 11 KB5089549 Update
Seeing a new SecureBoot folder under C:Windows? Microsoft confirms it is part of an essential KB5089549 update to replace expiring 2011 UEFI certificates.
12 views
Daily Writeups
⤷ Title: Cryptographic Misalignments: HP Firmware Revisions Trigger BitLocker Recovery Loops
════════════════════════
𐀪 Author: ddos
════════════════════════
ⴵ Time: Thu, 28 May 2026 02:02:27 +0000
════════════════════════
⌗ Tags: #Technology #Windows #BitLocker loop workaround #enterprise fleet device remediation #HP April 2026 BIOS update bug #HP BitLocker recovery loop #HP EliteBook boot freeze #Secure Boot Configuration F10 #UEFI CA 2023 certificate error #UEFICA2023Status registry stuck #Windows 11 Secure Boot servicing #ZBook boot logo crash
Information Security News
HP BitLocker Recovery Loop: How to Fix April 2026 BIOS Bug
Stuck in a rolling HP BitLocker recovery loop? Learn how to configure your BIOS Secure Boot settings to fix the UEFI CA 2023 certificate error.
14 views
Daily Writeups
⤷ Title: The Bitskrieg Hypothesis: A Looming Secure Boot and BitLocker Bypass
════════════════════════
𐀪 Author: ddos
════════════════════════
ⴵ Time: Tue, 02 Jun 2026 07:18:41 +0000
════════════════════════
⌗ Tags: #Vulnerability #Windows #BitLocker bypass #Bitskrieg #cybersecurity #Encryption Bypass #Firmware Vulnerability #Infosec News #JonasLyk #Nightmare_Eclipse #Secure Boot bypass
Information Security News
Bitskrieg Vulnerability Bypass: Secure Boot Flaw
Discover the Bitskrieg vulnerability bypass targeting Secure Boot and BitLocker. Read the latest cybersecurity analysis on this emerging threat.
33 views
Daily Writeups
⤷ Title: The Vulnerability Rift: Microsoft Realigns Posture Toward Security Researchers
════════════════════════
𐀪 Author: ddos
════════════════════════
ⴵ Time: Wed, 03 Jun 2026 03:18:37 +0000
════════════════════════
⌗ Tags: #Microsoft #coordinated vulnerability disclosure #Katie Moussouris infosec #Microsoft zero day dispute #MSRC researcher backlash #Nightmare Eclipse vulnerability #Secure Boot BitLocker bypass
Information Security News
Microsoft Zero Day Dispute: Legal Action Updates
Analyze the ongoing Microsoft zero day dispute. Learn how Microsoft responded to community backlash over research disclosures.
20 views
Daily Writeups
⤷ Title: Vulnerable UEFI Shim Bootloaders Risk Broad Secure Boot Bypass
════════════════════════
𐀪 Author: Do Son
════════════════════════
ⴵ Time: Mon, 15 Jun 2026 01:15:04 +0000
════════════════════════
⌗ Tags: #Vulnerability Report #Firmware Security #Microsoft DBX #Secure Boot bypass #UEFI shim
Daily CyberSecurity
Vulnerable UEFI Shim Bootloaders Risk Broad Secure Boot Bypass
Fixes roll out as vulnerable UEFI shim bootloaders allow attackers to achieve a critical Secure Boot bypass prior to OS initialization.
11 views
Daily Writeups
⤷ Title: Vendor-Signed UEFI Applications Allow Secure Boot Bypass
════════════════════════
𐀪 Author: Do Son
════════════════════════
ⴵ Time: Tue, 23 Jun 2026 00:22:24 +0000
════════════════════════
⌗ Tags: #Vulnerability Report #BYOVD #DBX #ESET #Firmware Security #Secure Boot #UEFI
Daily CyberSecurity
Vendor-Signed UEFI Applications Allow Secure Boot Bypass
ESET found vendor-signed UEFI applications vulnerable to a Secure Boot bypass. Attackers can run pre-boot code. Update firmware and the UEFI DBX now.
20 views
Daily Writeups
⤷ Title: Debian 13.6 Released: Crucial Security and UEFI Fixes
════════════════════════
𐀪 Author: Nam Phong
════════════════════════
ⴵ Time: Tue, 14 Jul 2026 03:51:36 +0000
════════════════════════
⌗ Tags: #Linux #Debian #Secure Boot #Trixie #UEFI
Information Security News
Debian 13.6 Released: Crucial Security and UEFI Fixes
Predictability and Stability Refined A stable distribution is cherished above all for its unwavering predictability. Debian 13.6 reinforces this virtue beautifully. It introduces a substantial arr…
26 views
Daily Writeups
⤷ Title: Forgotten UEFI Shims Undermine Secure Boot Defenses
════════════════════════
𐀪 Author: Nam Phong
════════════════════════
ⴵ Time: Thu, 16 Jul 2026 06:41:21 +0000
════════════════════════
⌗ Tags: #Vulnerability #cybersecurity #Linux #Secure Boot #UEFI #windows
Information Security News
Forgotten UEFI Shims Undermine Secure Boot Defenses
The Illusion of Early-Stage Security The Secure Boot mechanism must block malicious code before Windows or Linux even launches. However, ESET researchers recently made a startling discovery. Speci…
26 views
Daily Writeups
⤷ Title: Microsoft UEFI CA 2023 Certificate Update Causes Widespread Issues
════════════════════════
𐀪 Author: Do Son
════════════════════════
ⴵ Time: Tue, 21 Jul 2026 08:37:57 +0000
════════════════════════
⌗ Tags: #Technology #BIOS Update #bitlocker #Microsoft #Secure Boot #UEFI CA 2023 #Windows 11
Daily CyberSecurity
Microsoft UEFI CA 2023 Certificate Update Causes Widespread Issues
OEMs Discuss Secure Boot Challenges Last week, Microsoft invited enterprise IT administrators to a technical community exchange. They discussed the complex UEFI CA 2023 certificate update. Represe…
26 views
Daily Writeups
⤷ Title: Cisco Secure Boot Bypass Details and PoC Exploit Disclosed
════════════════════════
𐀪 Author: Do Son
════════════════════════
ⴵ Time: Wed, 09 Sep 2026 08:51:41 +0000
════════════════════════
⌗ Tags: #Vulnerability Report #cisco #Cisco UCS #CVE_2026_20293 #Secure Boot #UEFI #Vulnerability
Daily CyberSecurity
Cisco Secure Boot Bypass Details and PoC Exploit Disclosed
Cisco disclosed a high-severity security flaw in its Unified Computing System platform on September 9, 2026. This newly revealed Cisco Secure Boot bypass allows local attackers or administrators t…
12 views
Daily Writeups
⤷ Title: UEFI Shell Flaw Causes Secure Boot Bypass Vulnerability
════════════════════════
𐀪 Author: Do Son
════════════════════════
ⴵ Time: Thu, 10 Sep 2026 01:12:30 +0000
════════════════════════
⌗ Tags: #Vulnerability Report #CVE_2026_20293 #CVE_2026_33197 #CVE_2026_6485 #Secure Boot #UEFI Shell
Daily CyberSecurity
UEFI Shell Flaw Causes Secure Boot Bypass Vulnerability
Security researchers discovered a critical Secure Boot bypass vulnerability impacting multiple major hardware vendors today. This flaw exists within the Unified Extensible Firmware Interface (UEFI…
14 views
Daily Writeups
⤷ Title: Secure Boot Certificate Expiration: Windows PCA 2011 Retires
════════════════════════
𐀪 Author: Do Son
════════════════════════
ⴵ Time: Tue, 20 Oct 2026 03:55:31 +0000
════════════════════════
⌗ Tags: #Windows #cybersecurity #Microsoft #Secure Boot #UEFI #Windows 11
Daily CyberSecurity
Secure Boot Certificate Expiration: Windows PCA 2011 Retires
The Microsoft Windows Production PCA 2011 certificate officially reached its expiration date on October 19, 2026. This vital digital credential historically authenticated the integrity of the Wind…
17 views
Daily Writeups
⤷ Title: APT41 Deploys BlackX UEFI Bootkit Against Central Asian Diplomatic Agencies
════════════════════════
𐀪 Author: Do Son
════════════════════════
ⴵ Time: Thu, 22 Oct 2026 09:18:27 +0000
════════════════════════
⌗ Tags: #Cybercriminals #APT41 #BlackLotus #BlackX UEFI bootkit #CVE_2022_21894 #kaspersky #Secure Boot
Daily CyberSecurity
APT41 Deploys BlackX UEFI Bootkit Against Central Asian Diplomatic Agencies
TL;DR Security researchers uncovered a new firmware threat called the BlackX UEFI bootkit targeting diplomatic missions across Central Asia in early 2026. Built as a close copy of the infamous Bla…
9 views