Google Calendar (Android / Google Play)

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This application is available for Android. >>>> SHORT DESCRIPTION <<<<<. The latest build was released on July 5, 2017. Our latest check was performed on Apr 8th, 2017

Findings Summary

Our examination revealed total 23 items, where were 4 DAR items and 19 DIT items found. Among DAR items were found 0 worst items, 4 bad items, 0 good items, and 0 best items. Among DIT items were found 0 worst items, 19 bad items, 0 good items, and 0 best items.

Below you find 1 infographic summarizing what we described above. Each image provides information about both DAR and DIT items.

Bad Items

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:

Get the official Google Calendar app for your Android phone and tablet to save time and make the most of every day.

  • Different ways to view your calendar – Quickly switch between month, week and day view.
  • Events from Gmail – Flight, hotel, concert, restaurant reservations and more are added to your calendar automatically.
  • To-dos – Use Reminders to create and view to-dos alongside your events.
  • Goals – Add personal goals—like “run 3 times a week”—and Calendar will schedule time for them automatically.
  • Quick event creation – Smart suggestions for event titles, places and people save you time when creating events.
  • All your calendars in one place – Google Calendar works with all calendars on your phone, including Exchange.

 

Protection levels.

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

Locally stored data groups include Device Information, Credentials Information, Events Information, Notification Information.
The average DAR value is 3.50 points (7.00 points of system protection and 0.00 points of own protection). It equals to a typical value (3.5 points, where’s 7 points of system protection and 0 points of own protection).

Items 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.

– Locale ‘n’ TimeZone (‘Device Information’ Group) – Details about your locale, languages, time zone, country and so on. This data item related to mentioned group meant to be details about your device,

– 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.,

– Calendar Events (‘Events Information’ Group) – Some info about calendar events like date and time and calendar body. This data item related to mentioned group meant to be any events with details about event,

– Calendar Events (‘Notification Information’ Group) – Some info about calendar events like date and time and calendar body. This data item related to mentioned group meant to be part of content delivered as notification but separate from a main in-app content

Keep in mind if you’re using some Android devices such Samsung, LG or another device with an unlocked or non-locked loader that allow rooting your device without user action, the system level equals 6 points instead of 7. It means your data can be stolen without involving your actions.

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

Transferred data groups include Credentials Information, Account Information, Events Information, Address Book ‘n’ Contact Information, Notification Information.
The average DIT value is 4.00 points (4.00 points of system protection and 4.00 points of own protection). It is less than a typical value (4 points, where’s 4 points of system protection and 4 points of own protection).

Items with average value 4.00 points (4 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 – informs if fake certificate imported into a device, and own protection level means – bypassed by fake/stolen root certificates.

– 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.,

– 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 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,

– Device Data (‘Events 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 any events with details about event,

– 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,

– Calendar Events (‘Events Information’ Group) – Some info about calendar events like date and time and calendar body. This data item related to mentioned group meant to be any events with details about event,

– Calendar Details (‘Events Information’ Group) – Details of calendar events like date and time, time zone, place, participant’s info, calendar body, notes, attachments, etc. This data item related to mentioned group meant to be any events with details about event,

– Stream (‘Events Information’ Group) – Any social or another stream activity including posts, walls, etc. This data item related to mentioned group meant to be any events with details about event,

– Media Data (‘Events Information’ Group) – Any info like images, audios, videos, media notes, etc. This data item related to mentioned group meant to be any events with details about event,

– Contact Profile (‘Events 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 any events with details about event,

– Address Data (‘Events Information’ Group) – Home, work or another type of owner address stored by apps. This data item related to mentioned group meant to be any events with details about event,

– GEO Data (‘Events 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 events with details about event,

– Notes (‘Events 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 events with details about event,

– Credentials (IDs) (‘Events 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 events with details about event,

– Attachments (‘Events Information’ Group) – Either Raw or encoded attachments files. This data item related to mentioned group meant to be any events with details about event,

– Account Data (‘Events 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 events with details about event,

– Calendar Events (‘Notification Information’ Group) – Some info about calendar events like date and time and calendar body. This data item related to mentioned group meant to be part of content delivered as notification but separate from a main in-app content

Keep in mind if you’re using out-of-date Android < 7.0, the system level equals 4 points instead of 6. It means your data can be stolen with a crafted preinstalled certificate on the device or if someone makes you install a certificate. Also, if you’re using out-of-date Android < 5.0, 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.