Cursor Privacy mode: what it actually does and what it doesn't

Published 2026-05-11 by Owner

Cursor’s Privacy mode has one clear job: prevent your code from being retained or used for model training. If that’s the threat model you’re working against — a proprietary codebase, an NDA, a client engagement — Privacy mode is worth understanding precisely, not just toggling on and moving past.

The feature does what it says. It also leaves some things uncovered that people assume it handles. The gap between what users expect and what the feature actually guarantees is where most of the confusion lives.

What the guarantee actually is

When Privacy mode is enabled, Cursor makes two specific commitments:

No training on your code. Code sent through Cursor’s infrastructure is excluded from training data — both for Cursor’s own models and for the third-party models it routes through. When Cursor negotiates data processing agreements with providers like Anthropic and OpenAI, Privacy mode users’ data is flagged as excluded from training pipelines.

No storage beyond the request lifetime. Code is processed in memory and not persisted to Cursor’s servers after the request completes. The context window that holds your file contents, the diff you asked it to review, the stack trace you pasted into chat — all of that is discarded once the response is returned.

These are the meaningful commitments. If the threat is “a future model version will have learned from our authentication logic” or “Cursor’s servers retain a copy of our internal API schema,” Privacy mode addresses both.

The feature is not on by default for all plans:

• Pro plan: per-account toggle in Cursor Settings → Privacy
• Business plan: org-level setting; individual users can’t disable it
• Enterprise: enforced org-wide with stronger contractual backing

Knowing which situation your team is in matters. The per-user toggle and the org-level enforcement are meaningfully different things, even if they produce the same result when everyone follows the policy.

The guarantee covers code that moves through Cursor’s own infrastructure. What happens at the model providers is a separate question, and it’s the question most Privacy mode explanations skip.

What Privacy mode does not cover

Telemetry. Cursor still collects product telemetry: which features you used, how often completions were triggered, latency metrics, error rates. This is standard product analytics and doesn’t include code content, but it does include behavioral data. That a developer on your team triggered 300 inline completions in a two-hour session — that signal is collected regardless of Privacy mode.

Error logs. When something breaks — a failed API call, a timeout, a malformed request — error details may be logged for debugging. If code content appears in an error payload, that data can end up in a log. This is edge-case territory. But code content can surface in unexpected places inside error traces, so it’s worth knowing it’s possible.

Feature usage metrics. When you open Cursor Chat, invoke a particular command, or select a model from the dropdown, that event is recorded. The content of what you asked is typically not retained, but the fact that you asked is. Aggregate usage patterns feed product decisions. Privacy mode doesn’t change this; it’s true for essentially all SaaS products.

Local disk. Cursor writes conversation history and workspace state to a local .cursor/ directory. That data isn’t sent to Cursor’s servers — Privacy mode or not — but it is on disk. If the machine is compromised, or the directory is accidentally committed to git, that local history is exposed.

Check your .gitignore:

# .gitignore
.cursor/

This should be there by default. If it isn’t, add it. Local conversation history from Cursor Chat can contain substantial code context.

The honest framing: Privacy mode prevents code retention and training data inclusion on Cursor’s servers. It doesn’t make product instrumentation invisible, and it doesn’t extend to anything outside that server boundary.

Enterprise vs personal Privacy mode

The distinction is practical, not just a pricing tier difference.

Personal Privacy mode on a Pro plan is a policy commitment backed by Cursor’s terms of service. Cursor has agreed not to train on or retain your code. If that commitment is violated, recourse is contractual — you’d need to demonstrate a breach.

For many developers on personal projects or small teams, that’s sufficient. For a team delivering under a client NDA, or under regulatory requirements, it often isn’t.

Enterprise mode adds several layers on top of the same baseline:

Data residency. Specify which regions your data routes through. If your organization has geographic data requirements — GDPR for EU data, data localization rules for specific regulated industries — personal Privacy mode offers no geographic control.

Audit logs. A record of which users accessed which features, exportable for compliance reviews. If an auditor asks “which employees used AI coding assistance on this codebase during Q3,” personal Privacy mode can’t answer that question. Enterprise audit logs can.

SSO and provisioning. Organization-level control over who has a Cursor account, with identity tied to your identity provider. When an employee leaves, Cursor access is revoked through the same IdP flow as everything else — not through a separate manual step that someone might forget.

Enforced Privacy mode. This is the most practically significant one day-to-day. With Enterprise, Privacy mode is an org-level setting that individual users can’t override. With personal accounts, each user configures their own. One developer who turned it off to try something and forgot to re-enable it is a gap. Enterprise closes that gap without relying on individual discipline.

Zero-retention attestation. A formal document you can give to your legal team or a client, stating that their code isn’t retained by Cursor. Personal Privacy mode doesn’t come with a document for procurement. Enterprise does, or at minimum provides the contractual structure to produce one.

If “our AI tooling meets our security requirements” is a hard requirement, the bar personal Privacy mode clears is lower than Enterprise. Whether the gap matters depends on what your auditors and clients actually ask for — and often they don’t ask until something goes wrong.

The model provider problem

Cursor is a routing layer. When a prompt goes out, Cursor selects a model — Claude, GPT-4, or another — and forwards the request through Cursor’s API gateway to that provider’s servers. Cursor’s Privacy mode covers Cursor’s own infrastructure. The model provider receives the request and processes it under their own data terms.

The state of the major providers as of early 2026:

• Anthropic: API terms exclude customer data from training by default. Opting in requires explicit action.
• OpenAI: Same default-exclusion structure for API traffic — this has been policy since 2023.

So in practice, the major providers are also not training on your code. But this protection is their policy, not Cursor’s guarantee. If a provider changes their terms, Cursor’s Privacy mode doesn’t automatically shield you from that change.

The more concrete point: even with Privacy mode on, your code leaves your machine on every request. The code context Cursor attaches to the prompt — the current file, the selected block, the relevant snippets from the codebase — travels to a model provider’s servers and is processed there. Privacy mode’s guarantee is no retention and no training after the request. The processing itself is external.

A useful way to think about this: a team using Cursor with Privacy mode enabled on the Claude model is making three separate policy bets simultaneously:

1. Cursor doesn’t retain code beyond request lifetime
2. Anthropic doesn’t retain API traffic
3. Neither changes their terms in a relevant way going forward

Two of those three are backed by current contractual language. The third is a temporal assumption about future policy. Knowing which is which is more useful than treating all three as equivalent.

For most development work, this is an acceptable tradeoff. For code that handles encryption keys, biometric data, or regulated financial records, understanding this processing boundary is worth being explicit about before enabling any AI coding tool.

The “Privacy mode is on but…” gotchas

Four real scenarios where Privacy mode is irrelevant:

The screenshot to Notion. A developer hits a bug, takes a screenshot of the Cursor Chat panel showing a stack trace that includes internal hostnames and service names, and pastes it into a shared Notion page. Privacy mode covered the Cursor side. The screenshot is now in Notion’s cloud storage with none of Cursor’s restrictions.

The copy-paste to a public forum. An engineer copies an error message from a Cursor response — which includes a snippet of internal code Cursor used as context — and pastes it into a public GitHub issue or Stack Overflow question. Privacy mode had no jurisdiction over what the user does with the output.

The crash report dialog. Some Cursor debugging features ask for consent to send more detailed diagnostics when things go wrong. A user who clicks “send report” on a crash dialog may be sending context that Privacy mode would otherwise exclude. The consent dialog exists for a reason; reading it before confirming is not paranoid.

The agent writing to disk. Cursor’s agent features can read arbitrary files in the workspace. If Privacy mode is on, those file contents aren’t retained by Cursor’s servers. But if the agent writes file contents into a generated artifact, a log, or an external tool integration, that output is outside Privacy mode’s scope.

The pattern across all four: Privacy mode is a server-side guarantee about Cursor’s infrastructure. Everything outside that boundary — outputs the user copies, data integrations receive, artifacts the agent writes — is out of scope.

What to actually do

Enable Privacy mode at the organization level, not per-user. Individual settings drift — developers turn things off to test something, forget to re-enable it, or simply don’t know what the correct setting should be. Org-level enforcement in the Business plan or Enterprise removes this class of gap.

Check which model you’re routing through. Cursor routes to different providers depending on model selection. If data residency matters, verify that the selected provider offers a region that satisfies your requirements. Not all providers route through all regions, and Cursor’s model picker doesn’t surface this prominently.

Add .cursor/ to the project .gitignore if it isn’t there:

# .gitignore
.cursor/

Local conversation history and workspace state are written to that directory. They’re not sent to Cursor’s servers, but they will land in version control if not excluded — and then wherever the repo is mirrored or forked.

Treat Cursor Chat outputs as ordinary text. Code snippets, internal identifiers, and architectural details that appear in responses can be copied, shared, and indexed by any tool they touch. The guarantee covers Cursor’s side of the request. It ends at the clipboard.

Periodically verify that Privacy mode is still enabled. Settings can change across Cursor updates, account transfers, or when someone new gets admin access. A quarterly check costs thirty seconds.

The Privacy mode guarantee is real and meaningful within its scope. The scope is more specific than most users assume, and being clear about that scope is what makes the feature useful rather than a false sense of coverage.