Skip to content
BTC2H₿₿2H
BlogChaptersDownloadOrderAboutFAQ
BTC Price
—
In Circulation
—
Block Time
—
Tx Fee
—

Bitcoin Zero to Hero

A free, open book for everyone—read online, download, or order a physical copy.

Explore

  • Blog
  • Bitcoin tax: Zurich
  • Read Online
  • Download PDF
  • Open-Source Projects
  • Order Book

Legal

  • About
  • FAQ
  • Privacy Policy
  • Cookie Policy

Connect

  • Share on X
  • Follow the author
© 2026 Bitcoin Zero to Hero. All rights reserved.

Cybersecurity

Curated articles tagged Cybersecurity

Part of Security

2 articles
  • Coldcard entropy vulnerability that drained 594 Bitcoin from hardware wallets
    Featured
    Hardware Wallet

    How Weak Entropy Drained 594 Bitcoin From Coldcard

    A Coldcard firmware bug turned 128-bit seeds into 40-bit ones. Attackers swept 594 BTC from 500 wallets in 25 minutes. Here is exactly how it broke.

    August 1, 202614 min read
    Read Article →
  • Brute Forcing Bitcoin BIP39 Seed Phrases
    BIP39

    Brute Forcing Bitcoin BIP39 Seed Phrases

    Brute forcing BIP39 sounds simple. Modern GPUs run billions of seed guesses per second. Find out exactly what stops them from cracking your Bitcoin wallet.

    January 11, 202413 min read
    Read Article →

More in Security

BTC2H₿₿2H