All Articles TreasuryETFsIndustryRegulationEventsMarketsSecurityBitcoinMiningBitcoin News

Security Articles

Browse Security Bitcoin news and analysis. Expert insights on lending, custody, ETFs and more from 21Rates.

1 articles 10 categories 2026 archive

Latest Articles

Coldcard Firmware Bug Let Attackers Drain 594 BTC From Hardware Wallets
Jul 31, 2026 5 min read Security

Coldcard Firmware Bug Let Attackers Drain 594 BTC From Hardware Wallets

A firmware bug in Coldcard Mk3 hardware wallets skipped hardware RNG during key generation, allowing attackers to sweep 594 BTC ($38M) from ~500 wallets in 25 minutes.

Read full article →

Featured Bitcoin Podcasts

Compare Bitcoin services: Lenders| Custody| Exchanges| ETFs

403 Bitcoin companies tracked · 23 custodians · 33 Bitcoin ETFs · 20 lenders · 21 exchanges · $82B+ tracked ETF AUM · Rates verified daily