How to fix Secure Boot error "Image failed to verify with *ACCESS DENIED*"(possible firmware rootkit) [migrated]

When attempting to boot a live OS via USB or CD, I get the secure boot error: "Image failed to verify with ACCESS DENIED". There is no SSD/HDD installed. Secure boot is enabled and while i know that disabling secure boot will all… Continue reading How to fix Secure Boot error "Image failed to verify with *ACCESS DENIED*"(possible firmware rootkit) [migrated]

How many parts of an average laptop can be compromised? and how to confirm they are not?

The majority of virus/malware is stored and persists on the hard drive, Therefore by formatting the hard drive or re-installing the operating system, the virus is removed.
However, the average laptop also provides other means of infection … Continue reading How many parts of an average laptop can be compromised? and how to confirm they are not?

New Windows/Linux Firmware Attack

Interesting attack based on malicious pre-OS logo images:

LogoFAIL is a constellation of two dozen newly discovered vulnerabilities that have lurked for years, if not decades, in Unified Extensible Firmware Interfaces responsible for booting modern devices that run Windows or Linux….

The vulnerabilities are the subject of a coordinated mass disclosure released Wednesday. The participating companies comprise nearly the entirety of the x64 and ARM CPU ecosystem, starting with UEFI suppliers AMI, Insyde, and Phoenix (sometimes still called IBVs or independent BIOS vendors); device manufacturers such as Lenovo, Dell, and HP; and the makers of the CPUs that go inside the devices, usually Intel, AMD or designers of ARM CPUs……

Continue reading New Windows/Linux Firmware Attack

Secure boot disabled for Potential BIOS compromise on Tails OS machine

I have an ASUS computer that I use strictly for booting Tails OS from a USB. A few weeks ago I went into the BIOS and noticed that secure boot was disabled.
This computer has secure boot enabled by default. The chances of me having done th… Continue reading Secure boot disabled for Potential BIOS compromise on Tails OS machine