What permissions are used on Android and for what purpose? - Threema (2023)

FAQs

What app permissions should I not allow? ›

Watch out for permissions like access to your location, camera, microphone, contacts, browsing history and photo library. These can be particularly invasive and risky if not explicitly required for an app to function.

A special permission guards access to system resources that are particularly sensitive or not directly related to user privacy. These permissions are different than install-time permissions and runtime permissions. Figure 1: The Special app access screen in system settings.

The desktop app and the web client are available for both the Android and the iOS version of the Threema Work app. Please note that a mobile device (on which the Threema Work app is present and activated using credentials) is required.

Most of these are pretty self-explanatory---for instance, the SMS permission lets apps read and send text messages---but you'll see descriptions at the top of each page if you're not sure. Tap a permission and under Allowed, you'll see every app that you've approved to use that function.

Threema calls impress with crystal-clear voice quality and brilliant video quality. Since they are end-to-end encrypted, they are tap-proof. Instead of a phone number, the Threema ID serves as unique identifier.

It's the “dangerous” permissions that Android requires your permission to use. These “dangerous” permissions include access to your calling history, private messages, location, camera, microphone, and more. These permissions are not inherently dangerous, but have the potential for misuse.

It can use the permission until you're done with the app. Don't allow: The app cannot use the setting, even when you're using the app.

There are four categories (system, owner, group, and world) and four types of access permissions (Read, Write, Execute and Delete).

What are the default permissions in Android? ›

Overview. By default, an Android app starts with zero permissions granted to it. When the app needs to use any of the protected features of the device (sending network requests, accessing the camera, sending an SMS, etc) it must obtain the appropriate permission from the user to do so.

Some file permission examples: 777 - all can read/write/execute (full access). 755 - owner can read/write/execute, group/others can read/execute. 644 - owner can read/write, group/others can read only.

Apart from (some) group calls, Threema's servers in Switzerland handle all communication.

Threema uses the open-source library NaCl for encryption. The FBI document says it can access: No message content. Hash of phone number and email address, if provided by user.

The Android permissions controller is a component of the operating system that controls which privileges apps have. After downloading it, it allows you to approve or deny access to a new app. Ensure you're using Android 6.0 (Marshmallow) or later to activate or deny permissions for a particular app.

What is difference between permission and uses-permission in Android? permission is normally used when making a custom permission e.g. when making an app that other apps can tie in to, limiting access is a must. uses-permission is used when your app actually needs a permission it doesn't have normally.

You cannot send text messages just because you have someone's number — you have to have consent. The Federal Communications Commission (”FCC”) enforces rules under the Telephone Consumer Protection Act (”TCPA”) to protect consumers from unwanted calls or text messages.

Linking a phone number or email address to one's Threema ID is possible but optional. Hence, Threema can be used completely anonymously, which is a crucial feature in terms of privacy protection: Where there is no personal data in the first place, no personal data can ever be misused.

If you know that someone is using Threema, but they are missing or are marked with a red dot, it is because of one of the following reasons: Your contact has not linked their Threema ID with a phone number or email address. Your own address book contains neither your contact's phone number nor email address.

Has Threema been hacked? ›

The seven attacks span three different threat models, according to ETH Zurich researchers Kenneth G. Paterson, Matteo Scarlata, and Kien Tuong Truong, who reported the issues to Threema on October 3, 2022.

A text file has 666 permissions, which grants read and write permission to everyone. A directory and an executable file have 777 permissions, which grants read, write, and execute permission to everyone.

Google Play services automatically obtains all permissions it needs to support its APIs. However, your app should still check and request runtime permissions as necessary and appropriately handle errors in cases where a user has denied Google Play services a permission required for an API your app uses.

To instead see all apps grouped by the types of permissions they use, visit Settings > Privacy > Permission manager. Here you'll see permissions like Camera and Location; tap one to see the apps that have the permission allowed or declined.

All sorts of apps can request permission to access the camera, microphone, and other features, such as location information, on your phone or computer. Using the steps below, it's easy to see which apps have requested permission and revoke permissions that you've granted in the past.

Contacts: With permission to read, change, and add contacts in your address book, and access the list of accounts registered in the smartphone, an app can send your entire address book to its server.

Android does that for security reasons; if permissions have potential for abuse, it's better if an app doesn't have them by default. Apps actually need some permissions to do their jobs. For example, AR games really do require access to the camera. But even legitimate apps often want more than they really need.

They got/received permission from the city to build an apartment complex. The teacher gave me her permission to go home early. He asked (for) my permission to paint his room. You have my permission.

Access permissions include read, write, and none.

Rule-based and role-based are two types of access control models. The two systems differ in how access is assigned to specific people in your building. Note: Both rule-based and role-based access control are represented with the acronym “RBAC.” For simplicity, we will only discuss RBAC systems using their full names.

What are 444 permissions? ›

444 = (r-- r-- r--): owner/group/others are all only able to read the file. They cannot write to it or execute it.

Asking permission can improve the way people listen to each other. It can help build relationships by demonstrating respect and appreciation for friends, co-workers and family members.

To remove all permissions for group and world you would type chmod 700 [filename]. To give the owner all permissions and world execute you would type chmod 701 [filename]. To give the owner all permissions and world read and execute you would type chmod 705 [filename].

Superuser/Superuser Accounts. Superuser accounts are highly privileged accounts primarily used for administration by specialized IT employees. These users/accounts may have virtually unlimited privileges, or ownership, over a system.

There are three types of share permissions: Full Control, Change and Read. You can set each of them to “Deny” or “Allow” to control access to shared folders or drives: Read — Users can view file and subfolder names, read data in files, and run programs. By default, the “Everyone” group is assigned “Read” permissions.

It means to protect a file against the accidental overwriting, removing, renaming or moving files.

Step 1: Go to Settings. Select Private mode or click on the option from the notification panel. Step 2: Turn on the private mode & Enter your security pin. View your hidden texts in the private folder or browse the gallery for other content.

Watch out for permissions like access to your location, camera, microphone, contacts, browsing history and photo library. These can be particularly invasive and risky if not explicitly required for an app to function.

The three permission protection levels in Android are as follows: Normal Permissions. Signature Permissions. Dangerous Permissions.

description: Specifies a system permission that the user must grant in order for the app to operate correctly. Permissions are granted by the user when the application is installed (on devices running Android 5.1 and lower) or while the app is running (on devices running Android 6.0 and higher).

What is 766 permission? ›

766 is the mode we are changing the directory to, it means that the directory is readable and writable by WordPress and any and all other users on your system.

Permissions of 644 mean that the owner of the file has read and write access, while the group members and other users on the system only have read access. Issue one of the following chmod commands to reset the permissions on a file back to one of the likely defaults: chmod 600 ~/example.txt chmod 644 ~/example.txt.

Permission 600 is a common setting for data files that the owner wants to keep private. The owner may read and write a file. All others have no rights.

You can use Threema anonymously and protect private conversations with a PIN, which makes it one of the top non-traceable text message apps.

#1 Signal. Signal is the overall winner for both iOS and Android users. Signal created an encryption protocol that is now recognized as the most secure messaging app protocol out there. It offers everything most users need – SMS, video and voice calls, group chats, file sharing, disappearing messages, etc.

If you're looking for an app that protects nearly all the apps on your phone, try AppLock by Ivy Mobile. This app is free to download, available on Google Play Store, and easy to use, unlike most apps out there. You can protect apps such as WhatsApp, email, gallery, contacts, videos, and more with his app.

To hide all private chats, go to “Settings > Privacy” and activate the “Hide Private Chat” option. To show all hidden chats, deactivate the “Hide Private Chats” option in the Settings and enter the passcode. Private chats can only be displayed on mobile devices, but not in the desktop app / the web client.

However, you can back up your files so messages can travel with you. Unlike Wickr Me, Threema prevents parties from taking screenshots of conversations on their device for Android users.

Threema is an end-to-end (E2E) encrypted mobile messaging app. Unlike so many other secure apps, this one doesn't require you to enter an email address or phone number to create an account. This allows you to use the service with a very high level of anonymity, making it perhaps the most private messenger of all.

The chat history will not be restored with Threema Safe. Alternatively, you can create an ID export. With the ID export, only the ID can be restored. With data backups, you can transfer all your data, including chats and media files.

Does Threema show your phone number? ›

Threema does not use phone numbers to address users and can be used anonymously without uploading address book data.

Sending an SMS message is permission-protected. Your app can't use SMS without the SEND_SMS permission line in AndroidManifest. xml. This permission line enables a setting for the app in the Settings app that gives the user the choice of allowing or disallowing use of SMS.

SMS permissions

Furthermore, an app with permission to access SMS will be able to read all of the messages you have stored in your SMS apps. It will also be able to intercept and read (and possibly alter) incoming messages and it will even be allowed to send out SMS messages from your phone.

In recent versions of Threema, the “ECHOECHO” ID is listed among your contacts by default. It can be used to test message transmission. You can delete the ECHOECHO contact at any time (and, if need be, add it again manually).

Revocation will permanently delete a Threema ID and all associated information from the servers. This will make it impossible for a user to send or receive any message using this ID, or to restore the ID from a backup.

Hackers can break encryption to access the data using a number of different methods. The most common method is stealing the encryption key itself. Another common way is intercepting the data either before it has been encrypted by the sender or after it has been decrypted by the recipient.

Which apps we should not use? ›

Those include Clean Master, DU Battery Saver, ES File Explorer, Quick Pic Gallery and a whole host of other software, many of which are from the notorious Chinese developer, Cheetah Mobile. Many of these are still available for download as APKs from various sites and third-party Android app stores.

The 10 apps that are tracking you the most

Some of the biggest takeaways from the pCloud study are: 52% of apps share your data with third parties. The biggest offenders are Instagram, Facebook, LinkedIn, and Uber Eats sharing 79%, 57%, 50%, and 50% of your data with third parties, respectively.

Facebook is probably the worst app for privacy, as it tracks you across all its apps and websites. It even tracks you when you log off Facebook. The app requires almost every permission there is, including: Your contacts, call logs, and text messages.

A decoy app is a sneaky on-device tool that lets anybody hide secret photos, videos and messages, under the cover of an innocent-looking icon.

As you can see, the top three most searched apps for hacking are owned by Meta: Facebook, Instagram and WhatsApp. Meta products also hold the most information on their users. Hackers know this, and that's why these apps are such juicy targets.

View your installed apps: Go into Settings > General > iPhone Storage. Search for any suspicious or unexpected apps: Look out for any unexpected parental control apps, such as mSpy, Find my Friends and Family, and Spy Phone Phone Tracker. You can also tap on an app to see how much space it occupies.

Which Android apps are unsafe? ›

High-Risk Applications means life support applications, devices, or facilities; nuclear or chemical applications, devices, or facilities; applications, devices, or facilities related to aircrafts or other modes of mass transportation; or other applications, devices, or facilities in which failure of the Cloud Services, ...

Apps could be secretly accessing your smartphone's microphone and camera to spy on you, or collect data to serve you targeted ads. To protect yourself, you can download an app that lets you know when the microphone or camera are turned on. You can also invest in some hardware to block out the microphone and camera.