What is Psiphon 3?
Psiphon 3 is a circumvention tool from Psiphon Inc. that utilizes VPN, SSH and HTTP Proxy technology to provide you with uncensored access to Internet content. Your Psiphon 3 client will automatically learn about new access points to maximize your chances of bypassing censorship.
Psiphon 3 is designed to provide you with open access to online content. Psiphon does not increase your online privacy, and should not be considered or used as an online security tool.
How do I get Psiphon 3?
Click the link to download the client program for Windows XP, Vista, 7, and 8 (desktop) or Android 2.2+.
Psiphon 3 clients for iOS and Mac OS X are coming soon.
Is my Psiphon 3 for Windows authentic?
Psiphon 3 for Windows is never distributed as an installable package. Each Psiphon 3 for Windows client is a single executable file (".exe") that is digitally signed by Psiphon Inc. Windows automatically checks this signature when you run the client. You can also manually inspect the signature before running the client by invoking the Properties dialog for the file and inspecting the Digital Signatures tab.
The SHA1 thumbprint for the Psiphon Inc. certificate public key is displayed in the Certificate dialog Details tab. For the certificate valid for the period June 16, 2011 to June 21, 2012 the SHA1 thumbprint is:
8f:b7:ef:bd:20:a9:20:3a:38:37:08:a2:1e:0a:1d:2e:ad:7b:ee:6dand for the certificate valid for the for the period May 21, 2011 to July 30, 2014 the SHA1 thumbprint is:
84:c5:13:5b:13:d1:53:96:7e:88:c9:13:86:0e:83:ee:ef:48:8e:91
Psiphon 3 for Windows auto-updates itself, and this process automatically verifies that each update is authentic.
How do I run Psiphon 3 for Windows?
Download the client program and run it. When you run it, you should see a security prompt showing that this program is a legitimate product of Psiphon Inc.
Psiphon 3 automatically starts connecting when you run it. While it is connecting, a spinning icon is displayed. You may select one of the following tunnel modes: VPN (L2TP over IPSec), SSH, or SSH+ (SSH plus obfuscation, a randomized layer on top of SSH to avoid protocol fingerprinting).
