# Welcome to AnonShell
AnonShell is a collaborative project built by security researchers, privacy advocates, and educators who believe that knowledge should be accessible to everyone. This is not a commercial venture or a closed platform. Every article, guide, and resource you see here is hosted openly on GitHub, where anyone can view the source, contribute improvements, or suggest new content through pull requests.
By hosting everything on GitHub, we ensure this knowledge base cannot be taken down, censored, or locked behind paywalls. You can clone the entire repository and take it with you offline anytime you want. This site runs perfectly on a Raspberry Pi or any computer with a simple command: python3 -m http.server <port>. Clone the repository periodically to keep your offline copy updated with the latest articles and security information.
This is a shared effort between people who chose to distribute knowledge in a way that cannot be stopped: by giving it directly to the community, free of charge, with full transparency. If you find this resource valuable, consider contributing your own expertise, reporting issues, or supporting the project. Together, we are building a platform that hands security knowledge to everyone who needs it.
The Concentric Circles Methodology
Operational security is not learned in isolation. It follows a natural progression, like ripples expanding outward from a stone dropped in water. Start at the center with foundational concepts, then move outward through increasingly complex layers of defense.
| Circle | Threat Mitigations |
|---|---|
| Circle 1 | Mitigates ignorance-based vulnerabilities through threat modeling, security frameworks, and understanding adversary capabilities |
| Circle 2 | Mitigates credential theft, plaintext exposure, and identity correlation through encrypted communications and compartmentalization |
| Circle 3 | Mitigates device compromise, data exfiltration, and malware through OS hardening, encryption, and privilege control |
| Circle 4 | Mitigates network surveillance, physical intrusion, and traffic analysis through layered defenses and environmental controls |
| Circle 5 | Mitigates detection and attribution through operational tradecraft, covert channels, and advanced evasion techniques |
| Circle 6 | Mitigates active attacks through defensive monitoring, incident response, threat hunting, and security operations |
| Circle 7 | Mitigates false security assumptions through offensive testing, vulnerability assessment, and penetration techniques |
| Circle 8 | Mitigates organizational vulnerabilities through security governance, policy enforcement, and compliance frameworks |
| Circle 9 | Mitigates cloud-specific threats through infrastructure security, container hardening, and automated security pipelines |
| Circle 10 | Mitigates cryptographic weaknesses through proper algorithm selection, key management, and secure protocol implementation |
Each circle builds on the previous. You cannot secure your network if your operating system is compromised. You cannot harden your OS if you don't practice good password hygiene. And none of it matters if you don't understand the threats you face. Start at the center. Move outward methodically. Master each layer before advancing to the next.
What You'll Find Here
Every guide includes the security rationale behind each recommendation. We don't tell you to "use a password manager" without explaining credential stuffing attacks. We don't recommend Signal without discussing metadata leakage. We don't push full-disk encryption without covering cold boot attacks.
This site practices what it preaches. Zero analytics. Zero cookies. Zero third-party scripts. Minimal server logs that contain no identifying information. We can't track you because we don't collect the data needed to track you.
Getting Started
New to operational security? Start with /1.OpSec_101/Part 1 for foundational concepts and threat modeling. Already familiar with the basics? Jump to /2.Operating_Systems/ for platform-specific hardening guides.
Browse the file tree on the left. Every guide includes practical commands, security rationale, and links to audited open-source tools. No theory without implementation. No recommendations without explanation.
"Every encrypted message is an act of defiance. Every hardened system is a declaration of autonomy. Privacy is not dead: it's a choice we make every day."
AnonShell, broadcasting from the encrypted depths