Overview

Slack is a business communication service. According to Slack's policy, when an authorized user submits information, it may be displayed to other authorized users in the same or connected workspaces. In order to create or update a Workspace account, the user or their Customer (e.g., the user's employer) supplies Slack with an email address, phone number, password, domain and/or similar account details. Slack's security policy lists several security-related audits and certifications are applicable to the Slack services, and it uses encryption. It is unclear what obligations Slack has to children under 13 or 16 if use is not prohibited by law, or if Slack itself has knowledge a child is using its service.

Slack can be accessed through its website, and is available for download at the iOS App Store, and the Google Play Store. The Privacy Policy and Terms of Use used for this evaluation can be found on Slack’s website, iOS App Store and the Google Play Store. Additionally, other policies used for this evaluation include: Acceptable Use Policy, Privacy Shield Notice, and Security Policy. This evaluation only considers policies that have been made publicly available prior to an individual using the application or service.

Safety

According to Slack's policy, when an authorized user submits information, it may be displayed to other authorized users in the same or connected workspaces. The policy notes that the service is used for collaborating with others, and that the services provide different ways for authorized users working in independent workspaces to collaborate, such as Slack Connect or email interoperability. Other information, such as an authorized user’s profile information, may be shared, subject to the policies and practices of the other workspace(s). Slack's authorized use policy indicates that users must not use the services in any manner that may harm minors or that interacts with or targets people under the age of thirteen nor engage in activity that incites or encourages violence or hatred against individuals or groups;

Privacy

Slack's policy calls corporate users "Customers." Customers or individuals granted access to a workspace by a Customer (“Authorized Users”) routinely submit Customer Data to Slack when using the Services. Slack also collects, generates and/or receives other Information, including workspace and Account Information. For example, in order to create or update a Workspace account, the user or their Customer (e.g., the user's employer) supplies Slack with an email address, phone number, password, domain and/or similar account details. Slack's policy says they do not sell the personal information they collect and will not sell it without providing a right to opt out. The policy notes that third parties may, for example, provide virtual computing and storage services, or that Slack may share business information to "develop strategic partnerships" with third party service providers to support their common customers.

Security

The Slack security policy explains that they place strict controls over their employees’ access to the data corporate customers and their users make available via the Slack services, and it also lists several security-related audits and certifications are applicable to the Slack services. Data is encrypted in transit and at rest while in storage, according to this policy. The policy notes that in the event of a security breach, Slack will promptly notify you of any unauthorized access to your Customer Data.

Compliance

Slack's policy notes that to the extent prohibited by applicable law, Slack does not allow use of their services and websites by anyone younger than 16 years old. If a user learns that anyone younger than 16 has unlawfully provided Slack with personal data, Slack's policy asks that the user please contact them and they will take steps to delete such information. It is unclear what obligations Slack has to children under 13 or 16 if use is not prohibited by law, or if Slack itself has knowledge a child is using its service.

Overall Score

Every privacy rating includes an overall score. A higher score (up to 100%) means the product provides more transparent privacy policies with better practices to protect user data. The score is best used is as an indicator of how much additional work a person will need to do to make an informed decision about a product.

Basic ScoreFull Score
Comprehensive Assessment5746

Concerns

The privacy evaluation process summarizes the policies of an application or service into concern categories based on a subset of evaluation questions that can be used to quickly identify particular practices of a vendor’s policies. These concerns are composed of evaluation questions that can be used to calculate scores relative to that concern.

ConcernBasic ScoreFull Score
Data Collection: Protecting personal information5035
Data Sharing: Protecting data from third parties7585
Data Security: Protecting against unauthorized access10085
Data Rights: Controlling rights to data7555
Data Sold: Preventing sale of data7535
Data Safety: Promoting responsible use5050
Ads & Tracking: Prohibiting the exploitation of users' decision making process3645
Parental Consent: Protecting children’s personal information5040
School Purpose: Following student data privacy laws00
Individual Control: Controlling data useNA25

Statutes

Each statute or regulation is associated with one or more evaluation questions. As such, we can calculate scores for each statute or regulation using only those questions associated with the statute or regulation. Each specific statute or regulation's score serves as an indirect proxy indicating the likelihood of the application or service satisfying all of its compliance obligations.

StatuteBasic ScoreFull Score
California Online Privacy Protection Act (CalOPPA)7160
Children's Online Privacy Protection Act (COPPA)5549
Family Educational Rights and Privacy Act (FERPA)4433
Student Online Personal Information Protection Act (SOPIPA)5450
General Data Protection Regulation (GDPR)7351

Privacy Policy Details

1: Transparency

1.1: Policy Version
  • Privacy policies do indicate a version or effective date.
  • Privacy policies do not indicate a change log or past policy version is available.
1.2: Policy Notice
  • Users are notified if there are any material changes to the policies.
  • Privacy policies indicate the method used to notify a user when policies are updated.
1.3: Policy Changes
  • Unclear whether users are notified prior to any material changes to the policies.
  • Changes to the policies are effective immediately and continued use of the product indicates consent.
1.4: Policy Coverage
  • Privacy policies indicate the products that are covered by the policies.
1.5: Privacy Contact
  • Users can contact the company about any privacy policy questions, complaints, or material changes to the policies.
1.6: Policy Principles
  • Privacy policies do indicate privacy principles, layered notices, or a table of contents.
1.7: Policy Language
  • Privacy policies are not available in multiple languages.
1.8: Intended Use
  • Not intended for children under 13.
  • Intended for teens.
  • Intended for adults over 18.
  • Unclear whether intended for parents or guardians.
  • Unclear whether intended for students.
  • Unclear whether intended for teachers.

2: Focused Collection

2.1: Data Collection
  • Personally identifiable information (PII) is collected.
  • The categories of collected personally identifiable information are indicated.
  • Geolocation data are collected.
  • Unclear whether this product collects biometric or health data.
  • Interactions, behaviors, or usage analytics data are collected.
  • Unclear whether this product collects sensitive data.
  • Data is automatically collected.
2.2: Data Source
  • Unclear whether personal information or education records are collected from preK-12 students.
  • Personal information from children under 13 years of age is not collected.
2.3: Data Excluded
  • Unclear whether specific types of personal information excluded from collection.
  • Specific types of collected information are excluded from the privacy policy.
2.4: Data Limitation
  • Unclear whether the collection or use of data is limited to product requirements.

3: Data Sharing

3.1: Data Shared With Third Parties
  • Collected information is shared with third parties.
  • The categories of information shared with third parties are indicated.
3.2: Data Use by Third Parties
  • The purpose for sharing a user's personal information with third parties is indicated.
  • Data are shared for analytics.
  • Data are shared for research and/or product improvement.
  • Unclear whether personal information are shared for third-party marketing.
3.3: Data Not Shared With Third Parties
  • Unclear whether there are specific categories of information that are not shared with third parties.
3.4: Data Sold to Third Parties
  • Personal information is not sold or rented to third parties.
3.5: Third-Party Data Acquisition
  • Personal information about users is obtained from third parties.
3.6: Third-Party Links
  • Unclear whether links to third-party external websites are age-appropriate.
3.7: Third-Party Data Access
  • Third parties are authorized to access a user's information.
3.8: Third-Party Data Collection
  • Personal information of users is collected by a third party.
3.9: Third-Party Data Misuse
  • Unclear whether personal information can be deleted from a third party.
3.10: Third-Party Service Providers
  • Third-party services are used to support the product.
  • The roles of third-party service providers are indicated.
3.11: Third-Party Affiliates
  • The categories of third parties that receive data are indicated.
3.12: Third-Party Policies
  • Links to privacy policies of third-party companies are available.
3.13: Third-Party Data Combination
  • Company may combine data with additional data from third-party sources.
  • Unclear whether data shared with third parties can be combined with other data.
3.14: Third-Party Authentication
  • Third-party login is supported.
  • Personal information from third-party login providers is collected.
  • Personal Information is shared with third-party login providers.
3.15: De-identified or Anonymized Data
  • Unclear whether user information that is shared is shared in an anonymous or de-identified format.
  • Unclear whether the company describes their de-identification process of user information.
3.16: Third-Party Contractual Obligations
  • Contractual limits are not placed on third-party data use.
  • Contractual limits do not prohibit third parties from reidentifying or de-identified information.

4: Respect for Context

4.1: Data Use
  • Unclear whether use of information is limited to the purpose for which it was collected.
  • Unclear whether the conext or purpose for which data are collected is indicated.
4.2: Data Combination
  • Unclear whether this product treats combined information as personally identifiable information (PII).
4.3: Data Notice
  • Unclear whether notice is provided if the context in which data are collected changes.
4.4: Data Changes
  • Unclear whether consent is obtained if the practices in which data are collected change.
4.5: Policy Enforcement
  • Accounts may be terminated if users engage in any prohibited activities.

5: Individual Control

5.1: User Content
  • Unclear whether users can create or upload content.
5.2: User Consent
  • Unclear whether opt-in consent is requested from users at the time personal information is collected.
5.3: Remedy Process
  • A grievance or remedy mechanism is available for users to file a complaint.
5.4: Data Settings
  • Users can control the use of their information through privacy settings.
5.5: Data Disclosure
  • Unclear whether users can opt out from the disclosure or sale of their data to a third party.
  • Unclear whether users can request to know what personal information has been shared with third parties.
  • Unclear whether notice is provided in the event the company receives a government or legal request for a user's information.
5.6: Intellectual Property
  • Unclear whether users retain ownership of their data.
  • Unclear whether a copyright license is claimed to data or content collected from a user.
  • Unclear whether any copyright license to a user's data is limited in scope or duration.

6: Access and Accuracy

6.1: Data Access
  • Processes to access or review user data are available.
  • Unclear whether methods are available to restrict who has access to data.
  • Unclear whether the school, parents, or students can review student data.
6.2: Data Integrity
  • Unclear whether the company attempts to maintain the accuracy of data they collect.
6.3: Data Correction
  • Processes to modify data are available for authorized users.
  • Processes for the school, parents, or students to modify inaccurate student information are available.
  • Unclear whether the time period for the company to modify inaccurate data is indicated.
6.4: Data Retention
  • A data-retention policy is available.
  • Unclear whether exceptions to the data retention policy exist.
6.5: Data Deletion
  • Unclear whether this product deletes data when no longer necessary.
  • A user's data are not deleted upon account cancellation or termination.
  • Processes to delete user data are not available.
  • Processes for authorized users to delete data are available.
  • Unclear whether the time period for the company to delete data is indicated.
6.6: Data Portability
  • Processes to download user data are available.
  • Unclear whether a user can assign an authorized account manager or legacy contact.

7: Data Transfer

7.1: Data Handling
  • User information can be transferred to a third party in the event of a merge, acquisition, or bankruptcy.
  • Notice is provided to users if the company assigns its rights or delegates its duties to another company.
  • Unclear whether users are notified if their information is transferred to a third party.
7.2: Transfer Request
  • Unclear whether user information can be deleted prior to its transfer to a third party.
7.3: Onward Contractual Obligations
  • Third-party transfer is contractually required to use the same privacy practices.

8: Security

8.1: User Identity
  • Unclear whether a user's identity is verified with additional personal information.
8.2: User Account
  • Account creation is required.
  • Managed accounts are available.
  • Multi-factor account protection is available.
8.3: Third-Party Security
  • Third-parties with access to information are not required to provide the same security protections as the company.
8.4: Data Confidentiality
  • Reasonable security practices are used to protect data.
  • Employee or physical access to user information is limited.
8.5: Data Transmission
  • All data in transit are encrypted.
8.6: Data Storage
  • All data are stored in an encrypted format.
  • The company is clear what jurisdiction a user's personal information is subject to.
8.7: Data Breach
  • Notice is provided in the event of a data breach.
8.8: Data Oversight
  • Data-privacy and/or security-compliance audits are performed.

9: Responsible Use

9.1: Social Interactions
  • Users can interact with trusted users.
  • Unclear whether users can interact with untrusted users, including strangers and/or adults.
  • Profile information must be shared for social interactions.
9.2: Data Visibility
  • Personal information can be displayed publicly.
  • Users can control how their data are displayed to others.
9.3: Monitor and Review
  • User-created content is reviewed, screened, or monitored by the company.
  • Unclear whether user-created content is filtered for personal information before being made publicly visible.
  • Unclear whether social interactions between users are moderated.
  • Unclear whether social interactions of users are logged.
9.4: Report Content
  • Users can filter or block inappropriate content.
  • Users can report abuse or cyberbullying.
9.5: Internet Safety
  • Unclear whether the company provides links to resources that support safe and appropriate social interactions.

10: Advertising

10.1: Vendor Communications
  • A user can receive service- or administrative-related communications from the company.
10.2: Traditional Advertising
  • Unclear whether this product displays traditional or contextual advertisements.
10.3: Behavioral Advertising
  • Personalised advertising is displayed.
10.4: Ad Tracking
  • Data are collected by third-parties for their own purposes.
  • User's information is used to track and target advertisements on other third-party websites or services.
  • Data profiles are created and used for personalised advertisements.
10.5: Filtered Advertising
  • Unclear whether ads displayed to children are filtered for inappropriate content.
10.6: Marketing Communications
  • The company can send marketing messages.
  • The company does provide promotional sweepstakes, contests, or surveys.
10.7: Unsubscribe
  • Users cannot opt out of contextual, or personalised advertising.
  • Users can opt out or unsubscribe from marketing communications.
10.8: Do Not Track
  • Unclear whether this product responds to "Do Not Track" or other opt-out mechanisms.
  • Unclear whether the company provides a method for users to opt-out from third-party tracking.

11: Compliance

11.1: Children Under 13
  • Company does not have actual knowledge that personal information from users under 13 years of age is collected.
  • The company does not provide a section, heading, or separate policy for children in their policies.
  • Account creation is not restricted or prohibited for users under 13 years of age.
11.2: Students in K–12
  • Unclear whether this product is primarily used by, designed for, and marketed toward students in grades preK–12.
  • Processes to enter education records into the product are not described.
  • Unclear whether additional rights or protections may be provided with an additional school contract.
  • Unclear whether the company is designated as a school official.
11.3: Parental Consent
  • Unclear whether parental consent is required before personal information is collected or disclosed.
  • Unclear whether this product limits parental consent with respect to third parties.
  • Unclear whether this product allows parents to withdraw consent for the further collection of their child's information.
  • Children's personal information is deleted if collected without parental consent.
  • Unclear whether this product provides parental consent notice and method for submission.
  • Unclear whether this product transfers parental consent obligations to the school or district.
11.4: Legal Requirements
  • The legal jurisdiction that applies to the laws governing the policies is indicated.
  • Unclear whether a user is required to waive the right to a jury trial, or settle any disputes by arbitration.
  • Unclear whether a user is required to waive the right to join a class action lawsuit.
  • A company will disclose personal information to law enforcement.
11.5: Certification
  • Unclear whether the company has signed a privacy pledge or received a privacy certification.
11.6: International Laws
  • A user's data are subject to International data transfer or jurisdiction laws.
  • The company has indicated it is a Data Controller or Data Processor.