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Supply Chain Security, in plain English.

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Guides

SBOM for Beginners: What a Software Bill of Materials Really Is

Modern software is assembled from hundreds of parts you did not write. An SBOM is the ingredient label that lists them all. Here is a warm, beginner-friendly tour with a first SBOM you can generate today.

Jul 2, 20266 min read
FAQ

SBOM (Software Bill of Materials): Frequently Asked Questions

A clear FAQ on software bills of materials in 2026 — what an SBOM is, SPDX vs CycloneDX, NTIA minimum elements, VEX, signing, and how to keep an SBOM continuously accurate.

Jul 2, 20266 min read
Vulnerability Analysis

Zerologon: The Netlogon Cryptographic Flaw (CVE-2020-1472) Explained

CVE-2020-1472 let an unauthenticated attacker seize a domain controller in seconds by exploiting an all-zero AES-CFB8 initialization vector. Here's the real mechanism and the fix.

Jul 2, 20266 min read
Vulnerability Analysis

ProxyShell (CVE-2021-34473) Explained: The Exchange Path Confusion Behind a Pre-Auth RCE Chain

CVE-2021-34473 is the path-confusion flaw at the head of ProxyShell — a three-bug Microsoft Exchange chain that took unauthenticated attackers all the way to remote code execution.

Jul 2, 20265 min read
Concepts

The Principle of Least Privilege, Explained

Least privilege means every user, service, and process gets exactly the access it needs to do its job — and nothing more. Here's why it contains breaches and how to implement it without breaking things.

Jul 2, 20267 min read
Software Supply Chain Security

Polyfill.io supply chain domain takeover

How a routine domain sale turned polyfill.io into malware served to 100,000+ sites, and how to catch supply chain takeovers before they ship.

Jul 2, 20267 min read
Compliance

PCI DSS 4.0 Requirement 6: the software security guide

Requirement 6 is where PCI DSS 4.0 turned application and software security into a continuous, evidenced discipline. Here is a clause-by-clause walkthrough of 6.2 through 6.5 and what auditors expect.

Jul 2, 20266 min read
Compliance

PCI DSS 4.0 for developers: a practical secure-coding guide

PCI DSS 4.0 moved secure development from an annual review to a continuous engineering practice. Here's what Requirement 6 means for developers writing and shipping code.

Jul 2, 20265 min read
Vulnerability Analysis

PaperCut CVE-2023-27350 Explained: Auth Bypass to Unauthenticated RCE

CVE-2023-27350 is an authentication bypass in PaperCut MF and NG that hands an attacker admin access and remote code execution, rated CVSS 9.8. Here is the timeline, root cause, and how to remediate.

Jul 2, 20265 min read

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