Yandex.Mail 3.4.7 (iOS / App Store)

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This application is available for iOS. This app is designed to connect all email accounts, calendars and files and so on into one spot via official app Yandex Mail with intergrated Yandex Disk. The latest build was released on Jun 05, 2017. Our latest check was performed on Oct 7th, 2016.

Findings Summary

Our examination revealed total 21 items, where were 9 DAR items and 12 DIT items found. Among DAR items were found 0 worst items, 4 bad items, 5 good items, and 0 best items. Among DIT items were found 0 worst items, 8 bad items, 4 good items, and 0 best items.

Below you find 2 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:

Yandex.Mail for mobile is an inbox in your pocket which provides secure protection from spam and viruses.

  • You can use Mail without an internet connection. For example, if you lose your connection in the metro, you can continue reading your messages and reply to them. When you’re back online, those messages will be automatically sent.
  • The app supports using several inboxes at the same time, including Yandex.Mail for domains. You can read all your messages on one device by switching between profiles.
  • It’s easy to sort through your messages, even if there are a lot of them. Delete the ones you don’t want with one swipe, while the messages you need can be found through filters (for example, all your e-tickets or social network notifications).
  • Messages and chain letters which are grouped together by subject will open up right within the inbox message list.
  • Your files from Yandex.Disk can also be attached to your messages, not just documents and photos on your smartphone.
  • After receiving a message with an attachment, you’ll immediately know what’s inside. For instance, if it’s an image, then you’ll see a small thumbnail of it appear next to the subject line of the message in the inbox.

If you want to find answers to frequently asked questions, leave feedback about the app, or offer some new ideas, you can do so in the Settings and tapping on Support.

 

Protection levels.

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

Locally stored data groups include Account Information, Application Information, Media Information, Message Information, Address Book ‘n’ Contact Information.
The average DAR value is 5.17 points (7.00 points of system protection and 3.33 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 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.

– Credentials (IDs) (‘Account 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 info related to profiles, basic credential IDs like email or username or phone number plus some more info depends on applications,

– Credentials (Tokens) (‘Account 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 info related to profiles, basic credential IDs like email or username or phone number plus some more info depends on applications,

– Account Settings ‘n’ Configs (‘Application Information’ Group) – Information about your account settings and configurations. This data item related to mentioned group meant to be any info related to the app, app settings, including installed apps or installers,

– Application Configs (‘Application Information’ Group) – Different configuration files created by your app, perhaps app permissions. This data item related to mentioned group meant to be any info related to the app, app settings, including installed apps or installers

Items’ GROUP #2 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,

– Application Events (‘Application Information’ Group) – App events referred to user actions ‘n’ activities were done. This data item related to mentioned group meant to be any info related to the app, app settings, including installed apps or installers,

– Attachments (‘Message Information’ Group) – Either Raw or encoded attachments files. This data item related to mentioned group meant to be all message, including SMS, MMS, social and IM messages with or without attachments,

– 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,

– Media Data (‘Address Book ‘n’ Contact Information’ Group) – Any info like images, audios, videos, media notes, etc. 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

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 Device Information, Application Information, Account Information, Message Information, Credentials Information.
The average DIT value is 4.83 points (5.00 points of system protection and 4.67 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.

– Device Data (‘Device Information’ Group) – Device ID, Device Name, Device OS Name and Version, and jailbroken/root status. This data item related to mentioned group meant to be details about your device,

– Application Events (‘Application Information’ Group) – App events referred to user actions ‘n’ activities were done. This data item related to mentioned group meant to be any info related to the app, app settings, including installed apps or installers,

– 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,

– 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 (Passwords) (‘Credentials Information’ Group) – Well-known passwords or PINs you’re using to get access to your account (usually it is worse than tokens because it gives 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.,

– 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.,

– 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,

– Media Data (‘Account Information’ Group) – Any info like images, audios, videos, media notes, 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

Items’ GROUP #2 with average value 5.50 points (5 points of system protection, 6 points of own protection) means data protection levels have following definitions. Frankly talking, data is not available all the time or partially 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 – SSL pinning (can be patched).

– 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,

– 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 Short Profile (‘Message Information’ Group) – Name, Email ID, Phone number of contacts. This data item related to mentioned group meant to be all message, including SMS, MMS, social and IM messages with or without attachments,

– Preview (‘Message Information’ Group) – Some pieces of info downloaded locally or to show only on display only like a preview of emails, social posts, documents, thumbnails, etc. This data item related to mentioned group meant to be all message, including SMS, MMS, social and IM messages with or without attachments

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.

You may find privacy policy details proceeding the link above to compare developer’s vision on data protection with our results.