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Signal Private Messenger

Signal Private Messenger

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App Description

The following description comes from the Google Play Store description of the app:

Privacy is possible, Signal makes it easy.

Using Signal, you can communicate instantly while avoiding SMS fees, create groups so that you can chat in real time with all your friends at once, and share media or attachments all with complete privacy. The server never has access to any of your communication and never stores any of your data.

★ Say Anything. Signal uses an advanced end to end encryption protocol that provides privacy for every message every time.

★ Open Source. Signal is Free and Open Source, enabling anyone to verify its security by auditing the code. Signal is the only private messenger that uses open source peer-reviewed cryptographic protocols to keep your messages safe.

★ Be Yourself - Signal uses your existing phone number and address book. There are no separate logins, usernames, passwords, or PINs to manage or lose.

★ Group Chat. Signal allows you to create encrypted groups so you can have private conversations with all your friends at once. Not only are the messages encrypted, but the Signal server never has access to any group metadata such as the membership list, group title, or group icon.

★ Fast. The Signal protocol is designed to operate in the most constrained environment possible. Using Signal, messages are instantly delivered to friends.

★ Speak Freely - Make crystal-clear phone calls to people who live across town, or across the ocean, with no long-distance charges.

Signal is not currently compatible with tablets, but support for larger screens is on our roadmap and will be included in a future release!

For support, questions, or more information, please visit:
http://support.whispersystems.org

More details:
http://www.whispersystems.org/#encrypted_texts

Source code:
https://github.com/WhisperSystems/Signal-Android
Sensitive Permissions Used By This App
Permission What Why
Full network access Can access the internet It appears this app uses this data for internal use within the app's functionality
Can access the internet It appears this app uses this data for utility purposes
Find accounts on the device Can use user's account information stored on the phone Internal
Send sms messages Can send SMS messages Internal
Record audio Can record audio through microphone on device Internal
Change network connectivity Allows applications to change network connectivity state. It appears this app uses this data for internal use within the app's functionality
Take pictures and videos Can use camera or flashlight on the phone Internal
Read phone status and identity Can read phone's current state information like in-phone call, phone signal, carrier, device ID, and phone number Internal
Read your contacts Can read user's contact list (phone book) and phone call history Internal
Create accounts and set passwords Can use user's account authentication information (like password) or create new accounts Internal
Precise location (gps and network-based) Can use user's precise location Internal
Read call log Can read your device’s call log, including incoming and outgoing calls Not analyzed yet
Read calendar events plus confidential information Allows an application to read the user's calendar data. Not analyzed yet
Reroute outgoing calls Allows an application to see the number being dialed during an outgoing call with the option to redirect the call to a different number or abort the call altogether. Not analyzed yet
Install shortcuts Allows an application to install a shortcut in Launcher. Not analyzed yet
Disable your screen lock Allows applications to disable the keyguard if it is not secure. Not analyzed yet
Connect and disconnect from wi-fi Can connect to and disconnect from Wi-Fi access points Not analyzed yet
Directly call phone numbers Can call phone numbers Not analyzed yet
Pair with bluetooth devices Can connect to user's Bluetooth devices Not analyzed yet
Edit your text messages (sms or mms) Allows the app to write to SMS messages stored on your tablet or SIM card. Malicious apps may delete your messages. Not analyzed yet
Approximate location (network-based) Can use user's approximate location Not analyzed yet
Modify your own contact card Allows the app to change or add to personal profile information stored on your device, such as your name and contact information. This means the app can identify you and may send your profile information to others. Not analyzed yet
Modify or delete the contents of your usb storage Can write to your phone's USB storage Not analyzed yet
Modify your contacts Can edit contacts on device Not analyzed yet
Write call log Can change your device’s call log including incoming and outgoing calls data Not analyzed yet
Add or modify calendar events and send email to guests without owners\' knowledge Allows an application to write the user's calendar data. Not analyzed yet
Use accounts on the device Allows the app to request authentication tokens. Not analyzed yet
Receive text messages (sms) Can receive SMS messages Not analyzed yet
Receive text messages (mms) Allows an application to monitor incoming MMS messages. Not analyzed yet
Read your text messages (sms or mms) Can read SMS messages Not analyzed yet
Read your own contact card Allows the app to read personal profile information stored on your device, such as your name and contact information. This means the app can identify you and may send your profile information to others. Not analyzed yet
Third Party Libraries Used by this App
Library Usage
Bumptech

Privacy Analysis

Version of the app analyzed:

4.3.2

App was last analyzed by Privacy Grade on:

03/24/2017

Why does this app have this grade?

Our method for grading apps uses a privacy model that we built. This model is based on crowdsourced surveys that we conducted to capture people’s expectations and comfort levels with various app behaviors.

You can see more information about how we grade apps in our FAQ.

See the sensitive permissions table below the app description to see the permissions that made users of the app uncomfortable.

If you have issues about the information on this page, click the button below to send us feedback.

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