Is Sierra safe with your data?

Sierra

48/100

Partial disclosure · high confidence

Sierra earns a C (48/100) because it discloses its data practices only in part.

#117

of 211 apps ranked

score · Enterprise copilot avg 53

-5

vs category average

Grade scaleA · 70–100B · 60–69C · 48–59D · 35–47F · 0–34

Sierra AI discloses user rights and basic data practices but lacks granular mechanisms for training opt-out, retention specifics, and security controls, resulting in mixed awards across transparency and rights indicators.

What Sierra's privacy policy and terms of service say about your data

Data categories fully enumerated

Sierra lists the personal information categories it collects: Identifiers, Commercial information, Internet or network activity, Geolocation plus Protected classifications.

Named international transfer safeguards

The policy names Standard Contractual Clauses, the EU-U.S. Data Privacy Framework, the UK Extension plus the Swiss-U.S. DPF as its transfer mechanisms.

Vague retention period

Data is kept 'as long as you use our Services, or as necessary to fulfill the purpose,' with no concrete period named

Customer data reuse tied to customer instructions

Sierra states "we process this Customer Data only according to the instructions of our customers". Reuse is conditional on those instructions rather than ruled out or handed back to you as ownership.

What the policy is silent or vague on

Not stated: keeping user inputs out of model training
Not stated: a way to opt out of training
Not stated: whether training use differs by plan
Not stated: a deletion timeline after closure or request

Sierra privacy rating

Training-data use0 of 4 disclosed

Keeps user inputs out of model training, or makes training opt-inSilent

Names a way to opt out of or into trainingSilent

Says whether training use differs by plan or tierSilent

Lets the user keep ownership of generated outputsPartial

Data-subject rights5 of 5 disclosed

Grants a right to access your dataDisclosed

Grants a right to delete your dataDisclosed

Offers data portability in a usable formatDisclosed

Grants a right to correct your dataDisclosed

Grants a way to object to or opt out of processingDisclosed

Retention and deletion0 of 4 disclosed

States a retention period for your dataPartial

States a deletion timeline after closure or requestSilent

Sets a shorter retention for AI conversation logsSilent

Commits to collecting only the data it needsPartial

Third-party sharing2 of 5 disclosed

Lists the categories of third parties it shares withDisclosed

References a sub-processor list or data processing agreementSilent

Does not sell or share data for advertising, or offers opt-outPartial

Names a safeguard for international data transfersDisclosed

States a standard for government and law-enforcement accessPartial

Transparency1 of 5 disclosed

Discloses that you are interacting with AIPartial

Marks AI-generated or synthetic outputSilent

Enumerates the categories of data it collectsDisclosed

Maps processing purposes to legal basesPartial

Is versioned and dated, with change noticePartial

Sensitive data and children1 of 3 disclosed

Discloses automated decisions and a human-review pathNot applicable

Limits the use of special-category dataSilent

Governs biometric data specificallyPartial

States protections for children's dataDisclosed

Security and accountability0 of 3 disclosed

Describes its security safeguardsSilent

Commits to breach notificationSilent

Names a certification or a privacy contactPartial

DisclosedPartialSilentAdverseNot applicable

Details

Category: Enterprise copilot
Modalities: text, audio
Processes biometrics: Yes
Policy last updated: 2026-06-17
Region scored: Global / US-default
Last assessed: 2026-08-13

Documents examined

Other enterprise copilot apps

Each grade reflects our analysis of what an app states in its public privacy policy and terms as of the assessment date. It measures the transparency of those documents, not the company's actual data practices, security, or compliance. Grades are our opinion, offered for general information. Full disclaimer.