Privacy & Security

Privacy and security measures are often the first technologies to evolve in the blockchain space. As these measures grow and become applied more widely, this space will bring them to the forefront.

Privacy & security - Encrypted Email Provider ProtonMail Opens to the Public
Encrypted Email Provider ProtonMail Opens to the Public, Accepts Bitcoin Payments

ProtonMail, the world’s largest encrypted email provider, announced that the service is leaving beta and…

Privacy & security - OB1 CEO Brian Hoffman Explains Levels of Anonymity in OpenBazaar
OB1 CEO Brian Hoffman Explains Levels of Anonymity in OpenBazaar

Many people in the Bitcoin community see OpenBazaar as the next iteration of darknet marketplaces,…

Privacy & security - Bitcoin Privacy: "Confidential Transactions" Feature Can Fix Some of CoinJoin's Problems
Bitcoin Privacy: “Confidential Transactions” Feature Can Fix Some of CoinJoin’s Problems

Andrew Poelstra is a mathematician at Blockstream and was recently part of a panel discussion…

Privacy & security - New OBPP Report Outlines Troubling State of Privacy in Bitcoin Wallets
New OBPP Report Outlines Troubling State of Privacy in Bitcoin Wallets

Although Bitcoin has a reputation as a haven for criminals who wish to transact online…

Privacy & security - Insufficient Backups
Insufficient Backups, Not Bitcoin, at Fault as Hollywood Hospital’s Data Held Ransom by Hackers

This is a guest post by Addison James. In a February 17 letter, Hollywood Presbyterian…

Bitcoin Hardware Wallet KeepKey Launches and Begins Shipping

In a rare move in the Bitcoin space, KeepKey has simultaneously begun to take orders for and…

A Bitcoin signet, proposed by Karl-Johan Alm, could provide a more predictable and stable Bitcoin testnet for development.
Sig3 Launches an Automated Policy-Based Transaction Cosigner for Multisig Bitcoin Transactions

Bitcoin startup Sig3 has introduced an independent third-party automated co-signer which automatically co-signs transactions based on the…

Privacy & security - Ex-U.S. Agent Charged With Bitcoin Theft to Plead Guilty
Ex-U.S. Agent Charged With Bitcoin Theft to Plead Guilty

In March of 2015, two federal agents who helped conduct one of the major investigations…

Privacy & security - Exclusive: Possible $500
Exclusive: Possible $500,000 Bitcoin Cloud Mining Ponzi Scheme Uncovered

Roughly nine months ago, Bitcoin Foundation Chief Scientist Gavin Andresen made a rather interesting comment…

Op-ed - Cautionary Tales on Bitcoin Security
Cautionary Tales on Bitcoin Security

Bitcoin Exploration The Bitcoin ecosystem has many different types of platforms such as exchanges, payment…

I Sign, You Sign, We All Sign: Explanation of Multi-signature Transactions

Everyone is concerned about the security of their bitcoins, and we are constantly reading stories…

Coinpunk is Making an Unbannable iOS Wallet

Apple has been slashing and dashing apps that serve as Bitcoin wallets or even connect to other…

Op-ed - How to Secure a Blockchain with Zero Energy
How to Secure a Blockchain with Zero Energy

Proof of Work (PoW) is the only external method of powering the distributed consensus engine…

Bitcoin Magazine Stands in Solidarity with the Internet Defense League

Bitcoin Magazine applauds the work for the Internet Defense League (IDL) in taking a stand against the…

Op-ed - TorBroker: Anonymous Finance and Trust
TorBroker: Anonymous Finance and Trust

In late March, the cryptic underworld of the Tor hidden service ecosystem added a new…

Privacy & security - Use Secure Passwords for your Self-Generated Private Keys
Use Secure Passwords for your Self-Generated Private Keys

One of the lesser known features of Bitcoin is that the private keys, which form…

Op-ed - Some Measure of Anonymity
Some Measure of Anonymity

As world governments, corporations and individuals create and employ new surveillance technologies there will always…

Instawallets

After the failure of MyBitcoin in August, managed online wallets have become much less popular…

Traditional Bitcoin Client/Wallet

Traditional Bitcoin clients are ordinary programs that you download onto your computer. Receiving, verifying and…

Offline USB/CD and Paper Bitcoin Wallets

You can also store your wallet offline either on a digital medium like a CD…