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Articles, guides, and reviews about Security from the Bitcoin Products team.

131 articles · Page 4 of 7

How to Build a Multisig Recovery Setup Using Caravan After an Exchange Collapse

How to Build a Multisig Recovery Setup Using Caravan After an Exchange Collapse

Learn to build and test a DIY Bitcoin multisig recovery setup using Caravan, the open-source tool for sovereign self-custody after exchange failures.

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How to Set Up TapSigner NFC Wallet for Daily Bitcoin Payments

How to Set Up TapSigner NFC Wallet for Daily Bitcoin Payments

Step-by-step TapSigner setup guide covering initialization, PIN configuration, mobile wallet pairing, and tap-to-sign transactions for daily use.

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Ashigaru Review as the Samourai Wallet Successor Privacy Advocates Actually Need

Ashigaru Review as the Samourai Wallet Successor Privacy Advocates Actually Need

Ashigaru emerges as Samourai Wallet's privacy-focused successor with Whirlpool CoinJoin restored. Our research-based review examines if it's ready for daily use.

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US Military Runs Bitcoin Node as Admiral Paparo Confirms Cryptographic Testing

US Military Runs Bitcoin Node as Admiral Paparo Confirms Cryptographic Testing

Admiral Paparo confirms INDOPACOM operates a Bitcoin node for cybersecurity testing, marking the first public disclosure of US military participation in the network.

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Foundation Passport Review After Six Months of Daily Use

Foundation Passport Review After Six Months of Daily Use

A research-based review of the Foundation Passport hardware wallet examining build quality, security, and real-world usability over extended daily use.

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Admiral Paparo Confirms US Military Runs Bitcoin Node for Cryptographic Testing

Admiral Paparo Confirms US Military Runs Bitcoin Node for Cryptographic Testing

Four-star Admiral Samuel Paparo revealed the US Indo-Pacific Command operates a Bitcoin node for cybersecurity testing, marking first confirmed military participation.

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How to Set Up Document Timestamping with Simple Proof and OpenTimestamps

How to Set Up Document Timestamping with Simple Proof and OpenTimestamps

Learn to anchor documents to Bitcoin's blockchain using Simple Proof and OpenTimestamps. Step-by-step guide from upload to verification.

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How to Recover Unchained Vault Wallets Using Caravan

How to Recover Unchained Vault Wallets Using Caravan

Learn how to recover Unchained vault funds using Caravan's open-source tools, two hardware wallets, and your config file without relying on third parties.

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How to Set Up 2-of-3 Multisig with Bitcoin Keeper and Coldcard

How to Set Up 2-of-3 Multisig with Bitcoin Keeper and Coldcard

Step-by-step guide to creating a 2-of-3 multisig vault using Bitcoin Keeper and Coldcard hardware wallets for secure Bitcoin storage.

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Bitcoin Keeper Review for Inheritance Planning in 2026

Bitcoin Keeper Review for Inheritance Planning in 2026

Bitcoin Keeper offers time-locked keys and multisig vaults for inheritance planning. A research-based review of its estate planning toolkit.

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Volo Protocol's $3.5M WBTC Hack Demonstrates Why Self-Custody Beats DeFi Yield Chasing

Volo Protocol's $3.5M WBTC Hack Demonstrates Why Self-Custody Beats DeFi Yield Chasing

Volo Protocol lost $3.5M in WBTC and other assets after an admin key compromise. The incident adds to 2026's $786M in DeFi losses.

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Bitcoin's $180 Million Liquidation Risk at $78K Makes the Case for Hardware Wallets

Bitcoin's $180 Million Liquidation Risk at $78K Makes the Case for Hardware Wallets

With $180M in shorts at risk above $78K and $820M liquidated in one day, Bitcoin's volatility shows why self-custody matters more than ever.

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How to Timestamp Documents on Bitcoin Using Simple Proof

How to Timestamp Documents on Bitcoin Using Simple Proof

Learn how to create tamper-proof document timestamps anchored to the Bitcoin blockchain using Simple Proof and the OpenTimestamps protocol.

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Obscura VPN Review After Six Months of Multi-Hop Privacy Testing

Obscura VPN Review After Six Months of Multi-Hop Privacy Testing

Research-based Obscura VPN review analyzing its two-hop architecture, Cure53 audit results, and whether it delivers on privacy promises.

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How to Set Up Multisig with Sparrow Wallet Across Multiple Hardware Devices

How to Set Up Multisig with Sparrow Wallet Across Multiple Hardware Devices

Step-by-step guide to creating a 2-of-3 multisig setup using Sparrow Wallet with different hardware wallet brands, including PSBT signing and backups.

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Sparrow Wallet Review for Advanced Bitcoin Users Who Demand Full Control

Sparrow Wallet Review for Advanced Bitcoin Users Who Demand Full Control

A research-based review of Sparrow Wallet's UTXO management, multisig coordination, and privacy features for power users in 2026.

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Strait of Hormuz Bitcoin Scam Shows Why Merchant Verification Matters More Than Ever

Strait of Hormuz Bitcoin Scam Shows Why Merchant Verification Matters More Than Ever

Scammers impersonating Iranian authorities demanded Bitcoin from stranded ships. The incident reveals urgent gaps in crypto payment verification.

TFTC·
Nunchuk Multisig Wallet Review After 2 Years of Family Bitcoin Storage

Nunchuk Multisig Wallet Review After 2 Years of Family Bitcoin Storage

A research-based review of Nunchuk's collaborative custody features for families, covering inheritance planning, privacy controls, and real tradeoffs.

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Jason Lowery Joins U.S. Indo-Pacific Command as Bitcoin Strategy Advisor

Jason Lowery Joins U.S. Indo-Pacific Command as Bitcoin Strategy Advisor

Jason Lowery, author of 'Softwar,' now advises INDOPACOM on Bitcoin strategy as Admiral Paparo confirms military runs Bitcoin node.

TFTC·
How to Get Bitcoin-Backed Loans Without Losing Custody Using Debifi

How to Get Bitcoin-Backed Loans Without Losing Custody Using Debifi

Learn how Debifi's non-custodial lending lets you borrow against Bitcoin while keeping your keys through 3-of-4 multisig escrow.

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