#ESETresearch discovered and reported to @certcc 11 old Microsoft-signed UEFI shim bootloaders that allow bypassing UEFI Secure Boot on most UEFI systems. Read about it at https://www.welivesecurity.com/en/eset-research/forgotten-uefi-shims-undermining-secure-boot/
Tracked by #CVE-2026-8863 and #CVE-2026-10797, all these vulnerable shims were revoked in Microsoft’s June Patch Tuesday updates.

https://www.cve.org/CVERecord?id=CVE-2026-8863

https://www.cve.org/CVERecord?id=CVE-2026-10797
Exploiting these vulnerable shims allows execution of untrusted code at system boot by using the Bring Your Own Vulnerable Driver (#BYOVD) technique, enabling deployment of malicious UEFI bootkits on systems that trust the Microsoft Corporation UEFI CA 2011 certificate.
What makes these old shims dangerous is not a novel vulnerability, it’s that no new vulnerability is needed to bypass Secure Boot. Just an old, still-trusted, unrevoked shim and basic knowledge of how UEFI works is enough to bypass UEFI Secure Boot and deploy a UEFI bootkit.
For more details and instructions on how to verify that the dbx patches were properly applied on your system, read our blogpost:
https://www.welivesecurity.com/en/eset-research/forgotten-uefi-shims-undermining-secure-boot/

Idle thought: you can have progressive JPEGs in which coefficients for lower-frequency components are sent first and the detail is refined as more data arrives.

I'm sure you can abuse this to construct a *regressive* JPEG that looks good with the initial low-frequency data and then degrades into something terrible.

COMPART/SAURUS.GIF

lets be honest, we’re doing you a favor making your pc unbootable.

It's landed. The bug apocalypse is upon us as #Microsoft releases patches for 620+ CVEs to go along with #Adobe's 88. @TheDustinChilds has done his best to make sense of it all. Read his analysis at https://www.zerodayinitiative.com/blog/2026/7/14/the-july-2026-security-update-review

NEW: The Iranian government abused well-known flaws in the global telecoms infrastructure — specifically SS7 — to locate U.S. military personnel in the Middle East at the beginning of the war.

https://techcrunch.com/2026/07/14/iran-abused-mobile-networks-vulnerabilities-to-locate-u-s-military-in-the-middle-east-report-says/

So, @Rapid7Official is shutting down AttackerKB (https://attackerkb.com/) soon.

I view this as a case where an initially promising idea became overwhelmed by low‑quality reports from contributors.

Anyway, archive any data you wish to retain.

Firefox Security & Privacy Newsletter 2026 Q2 | Attack & Defense
https://attackanddefense.dev/2026/07/12/firefox-security-privacy-newsletter-2026-q2.html

CVE-2026-42980: Reversing and Exploiting the Windows Kernel WMI Underflow https://blog.grunt.ar/bin-exploitation/binary-gecko-academy/cve-2026-42980-wmi-underflow-en/

So @chompie1337 and I are on a mission to find creative artists who want to help design the cover for Phrack #73.

retro sci-fi & chrome futures
▸ cyberpunk / terminal aesthetics
▸ dystopian systems
▸ hacker manuals from an alternate timeline
▸ weird cool stuff and machines

Keen? Fancy helping?

📮 arts@phrack.org
⏰ Deadline: August 15

Show HN: Sx 2.0 – Share AI skills with your team through a Dropbox folder

Wait a moment. Aren't "AI" "skills" just markdown files in a skills directory? So to share them through Dropbox, you'd... drop them in your dropbox folder? And doing so needs a tool? What happened to cp? Or selecting files with your mouse, right click, copy, and paste it somewhere? Or I dunno, any of the myriad ways you can get files from one place to another on the same computer?

Oh, right, yes. We do not touch computers anymore. We let our agents do that! Right, right, sorry. I got left behind y'know, still have this mushy thing in my skull, so sorry. I'll try to use it less  to keep up with "progress".

#algernonReviewsHackerNews

First batch of 44CON 2026 tickets are available now.

These are the lowest-priced tickets we'll offer.

Prices go up with each batch, so if you want in early, now is the time...

Get yours: https://44con.com/product/44con-2026-ticket/

#44CON #44con26 #infosec #security

A little bit on machine-id from a friend:

https://ransomware.sh/posts/machine-id/

#linux, #blueteam

today on MALtv 😢