Overview
Digital Defense is an open-source personal security checklist that provides 259 actionable recommendations for protecting digital privacy and securing online accounts. Created and maintained by Alicia Sykes, the project organizes security guides into 12 categories with three priority tiers, with priority tiers that help readers filter beginner-to-advanced tasks.
The checklist covers a broad scope of personal security topics, from authentication best practices and email protection to network security and physical safeguards. For cryptocurrency holders, the Personal Finance section addresses asset protection directly, with guidance on hardware wallet storage, virtual payment cards, and transaction privacy1. Because these are general security practices rather than chain-specific guidance, Digital Defense works as a foundational companion for anyone managing digital assets, including Cardano holders securing their wallets.
Digital Defense operates as a community-maintained resource on GitHub, with contributions reviewed by maintainers before publication2. The project is released under an open license, keeping the guidance freely available and open to improvement3.
Key Features
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Authentication and account security. Covers password management, multi-factor authentication methods including passkeys, and strategies for securing login credentials across services4.
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Web browsing and network privacy. Addresses browser fingerprinting, DNS leak prevention, VPN configuration, and techniques for reducing online tracking and data collection.
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Personal finance protection. Includes credit monitoring, credit freeze procedures, virtual card usage for online transactions, and cryptocurrency storage and acquisition practices1.
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Device and physical security. Spans mobile device hardening, personal computer configuration, smart home IoT privacy, and measures to prevent real-world security incidents.
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Community-driven maintenance. Content is contributed and reviewed by a community of contributors on GitHub, with structured YAML-based data enabling programmatic access through an API2.
What to Expect
Digital Defense presents a clean, searchable interface built around an interactive checklist format. Each of the 12 categories displays its items in a table with priority levels marked as Essential, Optional, or Advanced, allowing users to focus on high-impact actions first. A progress tracker on the homepage records completed items across all categories, providing a persistent overview of security posture improvements.
The site defaults to a dark theme with multiple theme options available through DaisyUI. Each checklist item includes a brief explanation and, where applicable, links to recommended privacy-respecting software through the companion project Awesome Privacy. The three-tier priority system helps users triage their security efforts, starting with essential protections like enabling two-factor authentication and applying credit freezes before moving to advanced, threat-model-dependent measures whose legality varies by jurisdiction.
Navigation follows a card-based layout on the hub page, with each category showing its item count and a brief description of what it covers. Users can filter items by priority level and mark individual checklist items as complete, with progress persisting in the browser. Readers can filter items by priority, mark each one complete, and have that progress persist in the browser across sessions.
