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https://github.com/Bitmessage/PyBitmessage/releases/download/v0.6.1/Bitmessage-0.6.1.exe
Previous Version (Beta)

0.6.1
Aug 21, 2016
Changelog

Bitmessagelogo-reduced.png
Bitmessage

A remote code execution vulnerability has been spotted in use against some users running PyBitmessage v0.6.2. The cause was identified and a fix has been added and released as 0.6.3.2. If you run PyBitmessage via code, we highly recommend that you upgrade to 0.6.3.2. Alternatively you may downgrade to 0.6.1 which is unaffected. We will release binary files for Windows and macOS tomorrow (2018-02-14). In the mean time, users who use binaries should downgrade to 0.6.1 using the links below.

Bitmessage developer Peter Šurda's Bitmessage addresses are to be considered compromised.

We greatly apologize for the issue and we hope to release more information as it becomes available.

Bitmessage is a P2P communications protocol used to send encrypted messages to another person or to many subscribers. It is decentralized and trustless, meaning that you need-not inherently trust any entities like root certificate authorities. It uses strong authentication which means that the sender of a message cannot be spoofed, and it aims to hide "non-content" data, like the sender and receiver of messages, from passive eavesdroppers like those running warrantless wiretapping programs. If Bitmessage is completely new to you, you may wish to start by reading the whitepaper.

Download

An open source client is available for free under the very liberal MIT license. For screenshots and a description of the client, see this CryptoJunky article: "Setting Up And Using Bitmessage".

Windows icon.png Download for Windows (32bit) (64bit)

Apple icon.png Download for OS X

Tux.png Run the source code

Source code

You may view the Python source code on Github. Bitmessage requires PyQt and OpenSSL. Step-by-step instructions on how to run the source code on Linux, Windows, or OSX is available here.

Contribute

Please follow the contribution guidelines when contributing code or translations.

Security audit needed

Bitmessage is in need of an independent audit to verify its security. If you are a researcher capable of reviewing the source code, please email the lead developer. You will be helping to create a great privacy option for people everywhere!

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