Slack (Android / Google Play)

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This application is available for Android. This app is designed to be a communication app all-in-one. The latest build was released on July 7, 2017. Our latest check was performed on Apr 14th, 2017.

Findings Summary

Our examination revealed total 33 items, where were 12 DAR items and 21 DIT items found. Among DAR items were found 0 worst items, 12 bad items, 0 good items, and 0 best items. Among DIT items were found 0 worst items, 0 bad items, 21 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:

Slack brings team communication and collaboration into one place so you can get more work done, whether you belong to a large enterprise or a small business. Check off your to-do list and move your projects forward by bringing the right people, conversations, tools, and information you need together. Slack is available on any device, so you can find and access your team and your work, whether you’re at your desk or on the go.
Use Slack to:

  • Communicate with your team and organize your conversations by topics, projects, or anything else that matters to your work
  • Message or call any person or group within your team
  • Share and edit documents and collaborate with the right people all in Slack
  • Integrate into your workflow, the tools and services you already use including Google Drive, Salesforce, Dropbox, Asana, Twitter, Zendesk, and more
  • Easily search a central knowledge base that automatically indexes and archives your team’s past conversations and files
  • Customize your notifications so you stay focused on what matters

Scientifically proven (or at least rumored) to make your working life simpler, more pleasant, and more productive. We hope you’ll give Slack a try.
Stop by and learn more at: https://slack.com/

 

Protection levels.

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

Locally stored data groups include Account Information, Device Information, Application Information, Message Information, Analytics ‘n’ Ads 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.

– URLs (‘Account Information’ Group) – Different types of URLs referred to your files stored in clouds, profiles, social accounts, media files available online, 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 (‘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 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,

– Environment (‘Application Information’ Group) – Different info about the environment of the device including apps lists, device info, OS name and versions, updates, a list of users, network details, etc. This data item related to mentioned group meant to be any info related to the app, app settings, including installed apps or installers,

– Locale ‘n’ TimeZone (‘Message Information’ Group) – Details about your locale, languages, time zone, country and so on. This data item related to mentioned group meant to be all message, including SMS, MMS, social and IM messages with or without attachments,

– Analytics Configs (‘Analytics ‘n’ Ads Information’ Group) – Different configuration files created by your app, perhaps app permissions referred to analytics group data. This data item related to mentioned group meant to be any info related to analytics services like Flurry, Google Analytics, etc. or advertisements,

– 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,

– URLs (‘Message Information’ Group) – Different types of URLs referred to your files stored in clouds, profiles, social accounts, media files available online, 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,

– Account Data (‘Message 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 all message, including SMS, MMS, social and IM messages with or without attachments,

– Credentials (IDs) (‘Message 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 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

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, Application Information, Address Book ‘n’ Contact Information, Account Information, Message Information, Analytics ‘n’ Ads Information.
The average DIT value is 5.00 points (6.00 points of system protection and 4.00 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 with average value 5.00 points (6 points of system protection, 4 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 – MITM prevented or fake certificate importing prevented, but plaintext non-protected traffic is intercepted, 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 (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.,

– 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,

– Media URLs (‘Address Book ‘n’ Contact 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 info locally stored, cached or transferred over the network and belong to this application if it’s social even,

– 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,

– 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,

– Account Settings ‘n’ Configs (‘Account Information’ Group) – Information about your account settings and configurations. 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,

– 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,

– 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,

– Environment (‘Application Information’ Group) – Different info about the environment of the device including apps lists, device info, OS name and versions, updates, a list of users, network details, etc. This data item related to mentioned group meant to be any info related to the app, app settings, including installed apps or installers,

– 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,

– 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,

– Device Data (‘Analytics ‘n’ Ads 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 info related to analytics services like Flurry, Google Analytics, etc. or advertisements,

– Locale ‘n’ TimeZone (‘Account Information’ Group) – Details about your locale, languages, time zone, country and so on. 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,

– Locale ‘n’ TimeZone (‘Address Book ‘n’ Contact Information’ Group) – Details about your locale, languages, time zone, country and so on. 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,

– Tracked Data ‘n’ Favorites (‘Message Information’ Group) – Any favorites data or tracked data marked as desirable by users and for users (Means, user is on FB messenger, Viber, bank client or favourite hotel, room type, flight route, airline). 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,

– Sync Documents (‘Message Information’ Group) – Documents synchronized or locally stored on your device as is or converted into another file formats (like.pdf or set of separated jpg file per each .pdf file. 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 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.

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