Tech & Security, Explained
Quick Answer
Understand the technology that keeps you safe online — and keeps your Bitcoin secure. These plain-English guides cover encryption, privacy, passwords and how the internet works, with no jargon. Digital literacy is the foundation of financial sovereignty.
How Encryption Works
6 minEncryption is the quiet machinery that keeps the digital world private — your messages, your banking, your Bitcoin keys. At its core it is just math that scrambles information so only the right person can unscramble it. Here is how the two main kinds work, without the jargon.
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How HTTPS Works
6 minThat little padlock in your address bar is doing a lot of work. HTTPS quietly encrypts almost everything you do online, stopping eavesdroppers from reading or tampering with your data. But it is also widely misunderstood — here is what it actually proves, and what it does not.
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End-to-End Encryption Explained
6 minWhen a messaging app says it is "end-to-end encrypted," it is making a strong promise: not even the company running the app can read your messages. This is the gold standard for private communication — and the same principle behind privacy-preserving crypto tools. Here is how it works.
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Two-Factor Authentication (2FA) Explained
6 minA password alone is a single point of failure — if it leaks, you are exposed. Two-factor authentication adds a second lock, so a stolen password is not enough to get in. It is the single most effective upgrade you can make to your account security, and it is essential for protecting crypto.
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What Is a VPN?
6 minVPNs are marketed as magic invisibility cloaks for the internet. The reality is more useful and more limited: a VPN reroutes and encrypts your traffic through another server, hiding some things while exposing others. Here is the honest picture, free of the usual hype.
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How Passwords Get Hacked
7 minMost accounts are not "hacked" by genius coders breaking encryption — they fall to a handful of boring, predictable tricks. The good news: understanding those tricks reveals exactly how to defend yourself, and it is easier than you think.
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What Is Open Source?
6 minOpen source means anyone can read, check, and improve the code that runs a program. It sounds like a developer detail, but it is actually a profound security and trust principle — and it is why Bitcoin and the best crypto wallets are open source. Here is why it matters to you.
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How the Internet Actually Works
7 minYou use the internet every day, but what actually happens when you load a page or send a payment? Underneath is an elegant system of packets, addresses, and cooperating networks with no one in charge. Understanding it demystifies everything from websites to how Bitcoin’s peer-to-peer network spreads transactions.
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Security knowledge is self-defense.
The same skills that keep you safe online keep your Bitcoin safe. Put them to work with self-custody.