Viber Messenger – Text & Call 7.1.1 (iOS / App Store)

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This application is available for iOS. >>>> SHORT DESCRIPTION <<<<<. The latest build was released on Jul 06, 2017. Our latest check was performed on May 17th, 2017

Findings Summary

Our examination revealed total 28 items, where were 11 DAR items and 17 DIT items found. Among DAR items were found 0 worst items, 9 bad items, 1 good item, and 1 best item. Among DIT items were found 0 worst items, 5 bad items, 12 good items, and 0 best items.

Below you find 3 infographics summarizing what we described above. Each image provides information about both DAR and DIT items.

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Everything presented below is related to well-known CWEs, such as Sensitive data leakage [CWE-200], Unsafe sensitive data storage [CWE-312], Unsafe sensitive data transmission [CWE-319]. You can read more about it here.

Now let’s go deeper and examine each data item’s protection level.

 

Application Description

Let’s cite the description of this application below:

Connect freely with over 800M users worldwide!
Viber is a free messaging and calling app that keeps you connected to anyone in the world through your Internet connection*. It’s the most expressive way to keep in touch with your loved ones and connect with anyone worldwide!
Choose a contact from your phone book or simply enter a phone number to add a new contact on Viber. Make audio or video calls, text, share photos and videos, express yourself with thousands of stickers to choose from, record audio messages and even send files.

  • Group chat – Create groups with up to 250 participants and “like” messages when you don’t have time to reply
  • HaSSLe-free, long-distance calls – Free international calling without having to set up a username or provide login information
  • Voice or video – When voice isn’t enough, turn the video on! Enjoy the same HD-quality sound while having a face-to-face
  • Instant video messages – Tap and hold the instant video icon to capture the moment with 30-second videos, release to send.
  • Secured communications and trusted contacts – All messages and calls are protected by end-to-end encryption. Manually authenticate contacts to be sure you’re talking to the right person
  • Express yourself with stickers – Choose from a selection of thousands of stickers to say exactly what you mean
  • “Damage control” – Delete messages you regret sending
  • Hidden chats – Hide the chats you don’t want to be visible in your chat list and access them later with a PIN
  • Public Accounts – Chat with your favorite brands, businesses and personalities. Follow them for news and updates; subscribe to get direct messages
  • And much, much more – games, share contacts and location, see message information including who has seen and liked your messages

Install and start connecting now!
Follow Viber to see what’s up:
Viber – http://www.viber.com/viber
Facebook – http://facebook.com/viber
Twitter – http://twitter.com/viber
(*) Viber uses your Internet connection. Wi-Fi is suggested for the best experience. Data charges may apply where you are connected through your network data plan.
Viber is part of the Rakuten Group, a world leader in e-commerce and financial services.

 

Protection levels.

Locally stored data (Data-at-Rest, DAR).

Locally stored data groups include Media Information, Location ‘n’ Maps Information, Documents Information, Address Book ‘n’ Contact Information, Account Information, Call Information, Message Information.
The average DAR value is 4.09 points (7.00 points of system protection and 1.18 points of own protection). It is higher than a typical value (3.5 points, where’s 7 points of system protection and 0 points of own protection).

Items’ GROUP #1 with average value 6.50 points (7 points of system protection, 6 points of own protection) means data protection levels have following definitions. Frankly talking, protection and privacy issues are still possible but might involve interaction with an app code where system protection level means – root/jailbreak is required but not possible without wiping device data, and own protection level means – data is not available in backups.

– Screen Snapshots (‘Media Information’ Group) – Screenshots of your device screen running certain apps; common as an iOS app multitasking feature (app swipes) or browser tab swipes. This data item related to mentioned group meant to be any data like photo, image, video, audio

Items’ GROUP #2 with average value 3.50 points (7 points of system protection, 0 points of own protection) means data protection levels have following definitions. Frankly talking, extra data found that shouldn’t be accessed where system protection level means – root/jailbreak is required but not possible without wiping device data, and own protection level means – stored as is.

– Notes (‘Media Information’ Group) – Different notes stored locally or sync with server including all notes/tasks details. This data item related to mentioned group meant to be any data like photo, image, video, audio,

– GEO Snapshots (‘Location ‘n’ Maps Information’ Group) – Image-based snapshots of geodata info referred to the places. This data item related to mentioned group meant to be any geodata from trackers, social networks, GPS, etc.,

– GEO Data (‘Documents Information’ Group) – Any GEO info stored as plain text referred to the places or tracked activity. This data item related to mentioned group meant to be any documents stored locally, uploaded, downloaded, synchronized in any file format,

– Media Data (‘Media Information’ Group) – Any info like images, audios, videos, media notes, etc. This data item related to mentioned group meant to be any data like photo, image, video, audio,

– Account Media (‘Address Book ‘n’ Contact Information’ Group) – Full or reduced image of account. This data item related to mentioned group meant to be info locally stored, cached or transferred over the network and belong to this application if it’s social even,

– Account Data (‘Account Information’ Group) – Basic info about account like name, a list of sub-account (e.g. financial or other) and some linked data like a phone number. This data item related to mentioned group meant to be any info related to profiles, basic credential IDs like email or username or phone number plus some more info depends on applications,

– Media URLs (‘Account Information’ Group) – URLs related to media info such as stream media or profile’s media, etc. This data item related to mentioned group meant to be any info related to profiles, basic credential IDs like email or username or phone number plus some more info depends on applications,

– Contact Short Profile (‘Address Book ‘n’ Contact Information’ Group) – Name, Email ID, Phone number of contacts. This data item related to mentioned group meant to be info locally stored, cached or transferred over the network and belong to this application if it’s social even,

– Messages (‘Message Information’ Group) – Different types of messages, conversations, except for SMS, MMS but including recipient and sender IDs and attachments. This data item related to mentioned group meant to be all message, including SMS, MMS, social and IM messages with or without attachments

Items’ GROUP #3 with average value 7.00 points (7 points of system protection, 7 points of own protection) means data protection levels have following definitions. Frankly talking, compliance but there are publicly known techniques to access the data including forensics one where system protection level means – root/jailbreak is required but not possible without wiping device data, and own protection level means – data stored in system protected place like keychain (no additional protection still).

– Encryption Key (‘Call Information’ Group) – Encryption key found in app data folders, traffic or code of app used to protect your data. This data item related to mentioned group meant to be any call info stored, cached or transferred in plain text or media files

Also, keep in mind, using jailbroken device means the system protection level is 0 points and you’re using out-of-date iOS < 8.3 the system protection level is 2 points. If some data marked as shareable via iTunes, then the system protection level is 4 points.

Transferred data (Data-in-Transit, DIT).

Transferred data groups include Message Information, Location ‘n’ Maps Information, Credentials Information, Address Book ‘n’ Contact Information, Call Information, Account Information, Media Information.
The average DIT value is 5.47 points (5.00 points of system protection and 5.94 points of own protection). It is higher than a typical value (4 points, where’s 4 points of system protection and 4 points of own protection).

Items’ GROUP #1 with average value 4.50 points (5 points of system protection, 4 points of own protection) means data protection levels have following definitions. Frankly talking, data available if it’s allowed only and may require user action where system protection level means – some techniques are available to developers to keep connection bypassing system settings, like proxy settings, etc., and own protection level means – bypassed by fake/stolen root certificates.

– Media Data (‘Message Information’ Group) – Any info like images, audios, videos, media notes, etc. This data item related to mentioned group meant to be all message, including SMS, MMS, social and IM messages with or without attachments,

– Contact Media (‘Message Information’ Group) – Full or reduced image of contact. This data item related to mentioned group meant to be all message, including SMS, MMS, social and IM messages with or without attachments,

– GEO Data (‘Location ‘n’ Maps Information’ Group) – Any GEO info stored as plain text referred to the places or tracked activity. This data item related to mentioned group meant to be any geodata from trackers, social networks, GPS, etc.,

– Address Data (‘Location ‘n’ Maps Information’ Group) – Home, work or another type of owner address stored by apps. This data item related to mentioned group meant to be any geodata from trackers, social networks, GPS, etc.

Items’ GROUP #2 with average value 3.00 points (5 points of system protection, 1 point of own protection) means data protection levels have following definitions. Frankly talking, extra data found that shouldn’t be accessed where system protection level means – some techniques are available to developers to keep connection bypassing system settings, like proxy settings, etc., and own protection level means – compressed or encoded by known algorithm (zlib, zip, b64, etc.).

– GEO Snapshots (‘Location ‘n’ Maps Information’ Group) – Image-based snapshots of geodata info referred to the places. This data item related to mentioned group meant to be any geodata from trackers, social networks, GPS, etc.

Items’ GROUP #3 with average value 6.00 points (5 points of system protection, 7 points of own protection) means data protection levels have following definitions. Frankly talking, protection and privacy issues are still possible but might involve interaction with an app code where system protection level means – some techniques are available to developers to keep connection bypassing system settings, like proxy settings, etc., and own protection level means – tricks to bypass sniffing (hardly to be or can’t be patched to bypass), including non-common or unsupported protocols.

– Credentials (IDs) (‘Credentials Information’ Group) – Only account IDs like app or 3rd party user IDs including emails, phone number, usernames, etc. (depends on apps). This data item related to mentioned group meant to be any types of credentials including basic (IDs only), passwords, tokens, etc.,

– Credentials (Activation IDs) (‘Credentials Information’ Group) – Two-factor activation code received in messages. This data item related to mentioned group meant to be any types of credentials including basic (IDs only), passwords, tokens, etc.,

– Credentials (Tokens) (‘Credentials Information’ Group) – Different tokens used to get access to your account, except for passwords but including app or 3rd party tokens, secret keys, etc. (usually give full access to your account). This data item related to mentioned group meant to be any types of credentials including basic (IDs only), passwords, tokens, etc.,

– Contact Profile (‘Address Book ‘n’ Contact Information’ Group) – Full info about contacts including name email id, phone numbers, gender, linked accounts, geodata, stream and social activity. This data item related to mentioned group meant to be info locally stored, cached or transferred over the network and belong to this application if it’s social even,

– Contact vCard (‘Message Information’ Group) – Contact Profile info stored as vCard. This data item related to mentioned group meant to be all message, including SMS, MMS, social and IM messages with or without attachments,

– Messages (‘Message Information’ Group) – Different types of messages, conversations, except for SMS, MMS but including recipient and sender IDs and attachments. This data item related to mentioned group meant to be all message, including SMS, MMS, social and IM messages with or without attachments,

– Call Stream (‘Call Information’ Group) – Audio or Video call streaming between two or more users. This data item related to mentioned group meant to be any call info stored, cached or transferred in plain text or media files,

– Call Details (‘Call Information’ Group) – Full info about calls you made like phone number, name, date and time, duration, type of call (missed, placed, outgoing, etc.), profile, and stream (other phone numbers, messages preview, social news). This data item related to mentioned group meant to be any call info stored, cached or transferred in plain text or media files,

– Call History (‘Call Information’ Group) – Some info about calls you made like phone number, name, date and time, and type of call (missed, placed, outgoing, etc.). This data item related to mentioned group meant to be any call info stored, cached or transferred in plain text or media files,

– Account Details (‘Account Information’ Group) – Full info about your account including account membership, expiration, profile, linked data and account, etc. This data item related to mentioned group meant to be any info related to profiles, basic credential IDs like email or username or phone number plus some more info depends on applications,

– Place Details (‘Location ‘n’ Maps Information’ Group) – Any info about public place (city, country, address, contacts) stored in text or media file format. This data item related to mentioned group meant to be any geodata from trackers, social networks, GPS, etc.,

– Notes (‘Media Information’ Group) – Different notes stored locally or sync with server including all notes/tasks details. This data item related to mentioned group meant to be any data like photo, image, video, audio

Keep in mind if you’re using out-of-date iOS < 9.0, the system level equals 2 points instead of 4. It means your data can be stolen without involving your actions.

Privacy Policy

Full application privacy policy is available here.