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  • XZ Utils review notes

    Trivial commits like updates to THANKS or typo fixes in comments aren’t mentioned here. The months...

  • Root Cause vs. Contributing Factors

    In multiplication, to get a non-zero product, all factors must be greater than 0. If one...

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    Docs Read more details about CIPHERLEAKs. Q&A Who is affected by CIPHERLEAKs?All SEV, SEV-ES and SEV-SNP...

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    Browser Security Bugs that Aren’t: JavaScript in PDF

    A fairly common security bug report is of the form: “I can put JavaScript inside a...

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    Hunting for Persistence in Linux (Part 1): Auditd, Sysmon, Osquery (and Webshells)

    Welcome to this blog series “Hunting for Persistence in Linux”! This is a series that explores...

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    Putting an xz Backdoor Payload in a Valid RSA Key

    Last week, a backdoor was discovered in xz-utils. The backdoor processes commands sent using RSA public...

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    Kobold letters – Lutra Security

    Anyone who has had to deal with HTML emails on a technical level has probably reached...