Yes, Grammarly is safe from a security standpoint. Your documents are encrypted, hosted in Amazon Web Services data centers in the US East region, and the company does not sell your content. The catch for freelance writers is AI training: on individual accounts, the Product Improvement and Training setting is enabled by default. Before processing confidential client assignments, you must turn this setting off or disable Grammarly on sensitive files. So, is Grammarly safe for client work? The answer depends on your settings.
Is Grammarly Safe? The Short Verdict
For independent writers and editors drafting public articles, marketing copy, and everyday emails, Grammarly provides a reliable editing layer. The core infrastructure is protected with high-grade encryption, independent security certifications, and strict rules that prohibit external AI vendors from training on user content. If your work involves public copy or non-confidential prose, the answer to is Grammarly safe is a clear yes.
However, is Grammarly safe to use on proprietary client assignments? That is where AI training becomes the main concern. On individual accounts, Grammarly can use your text to train its AI models unless you turn that setting off. If you handle unpublished book drafts, internal corporate memos, or client files bound by non-disclosure agreements, leaving this setting on may conflict with your contract terms. So, is Grammarly safe right out of the box? Only if you adjust your privacy preferences first.
| Account Type | AI Training on Your Content by Default | What to Do |
|---|---|---|
| Individual Account (Free or paid, signed up yourself) | On by default | Turn it off in your account’s privacy and data settings. |
| Team Account (Bought on Grammarly’s website) | On by default | Ask your team administrator to turn it off for the entire organization. |
| Business, Enterprise, or Education Account (Bought through sales team) | Off automatically | Check with your organization administrator to confirm it remains disabled. |
Is Grammarly Safe? Our Privacy Verdict
General public writing, personal correspondence, marketing copy, and everyday client proposals where strict confidentiality rules do not apply.
Unpublished manuscripts, trade secrets, sensitive financial data, or any client files covered by an NDA while default training remains active.
Turn off the Product Improvement and Training control in your privacy settings, or temporarily disable Grammarly when opening confidential files.
Who Owns Grammarly Now? (The Superhuman Name Change)
In October 2025, Grammarly’s parent company renamed itself Superhuman (Superhuman Platform Inc.) after acquiring the email app Superhuman, as reported by Engadget. The company brings together Grammarly, Coda, and Superhuman Mail under CEO Shishir Mehrotra. The Superhuman Privacy Policy (effective July 6, 2026) covers all company products, including those offered as Grammarly. The writing product itself still uses the Grammarly name, so seeing Superhuman on invoices or account emails simply reflects this parent corporate structure. The name change does not change the answer to is Grammarly safe: the same privacy policy covers the Grammarly product.
What Data Does Grammarly Collect?
To answer is Grammarly safe for your business, start with what data it stores. Under the Superhuman privacy policy, Grammarly collects three categories of information:
- User Content: Content you upload or enable the products to access, such as the text you type, paste, or import for proofreading.
- Technical Information: Technical information about your device.
- Usage Data: Usage data about how you interact with the products.
Many writers ask: does Grammarly sell your data? Grammarly’s security page says it does not sell or monetize your content. In addition, the Grammarly Privacy page states that its apps ignore or exclude sensitive fields such as names, addresses, passwords, and payment information “on a best-efforts basis.”
Note that a “best-efforts basis” is an automated safeguard, not an ironclad guarantee. Some sensitive text may not be recognized and excluded. You should never rely on automated filters to mask sensitive client details.
Is Grammarly a Keylogger?
Because Grammarly checks text across web browsers and desktop tools, writers sometimes worry about background surveillance. So, is Grammarly a keylogger? Grammarly provides a direct answer: “No. A keylogger is a type of malicious software or surveillance tool that records every keystroke.”
Grammarly clarifies that its software “doesn’t check text if it’s not actively being used.” A malicious keylogger operates hidden in the background, logging every password, system shortcut, and message you type. Grammarly, by contrast, says it only checks text while it is actively being used in a supported app. The text you write is sent to Grammarly’s servers to be checked for spelling and clarity while actively in use. That is how any cloud writing assistant functions, and it is why managing your training settings and keeping NDA work isolated matters.
Does Grammarly Train Its AI on Your Writing?
For freelance writers handling client assets, this is the most important part of the is Grammarly safe question. Does Grammarly train on your data? The answer depends on your account tier. The Superhuman privacy policy states: “You can decide whether Superhuman can use your user content to train our AI models.”
For individual users—including free accounts and paid individual subscriptions—the “Product Improvement and Training” control is turned on by default. Unless you turn it off, your submitted sentences and revisions can be used to train future language models. For writers drafting proprietary client work, letting an automated tool train on client manuscripts creates compliance risks.
Corporate accounts have different defaults. As documented in the Grammarly Business Accounts FAQ, Product Improvement and Training is automatically off for Grammarly for Education, Business, Pro, and Enterprise accounts purchased through Grammarly’s sales team. However, for multi-user team accounts purchased directly on the website, training is initially on by default, and an admin must opt out for the whole organization. Individual users who join a team account adopt the setting chosen by the administrator.
Importantly, the policy states: “we restrict our AI service providers from training their models on user content of Superhuman customers.” Grammarly’s privacy page also confirms that third-party AI partners cannot train their models on your writing. This protects your text from outside AI vendors, but Grammarly itself can still use your content to train its own AI models unless you switch the setting off.
How to Turn Off AI Training in Grammarly
You can turn off model training in your Grammarly account’s privacy and data settings by switching off the “Product Improvement and Training” control. Team members inherit their admin’s choice. To review the official guidance, visit the Product Improvement and Training Help Article.
Is Grammarly Safe With Your Data? Storage and Encryption
From a pure security angle, is Grammarly safe? Its infrastructure points to yes. According to the official Grammarly Security page, “Grammarly hosts data in Amazon Web Services data centers in the US East region.” The company encrypts all data in transit using TLS 1.2 and at rest using AES-256 server-side encryption. Grammarly also states: “Your words are yours— we do not sell or monetize your or your team’s content.”
On compliance certifications, Grammarly lists SOC 2 (Type 2), SOC 3, ISO/IEC 27001:2022, ISO/IEC 27017, ISO/IEC 27018, ISO/IEC 27701, and ISO/IEC 42001:2023. It also states compliance with GDPR, CCPA, and HIPAA. To uncover security flaws, Grammarly runs an ongoing bug bounty program on HackerOne. For European clients, data may be transferred outside your country under the EU-U.S. Data Privacy Framework and standard contractual clauses, retained as long as necessary to provide the products.
Security Incidents: Is Grammarly Safe Today?
Before answering is Grammarly safe for professional workflows, it helps to review past security incidents.
The 2018 Browser Extension Bug
In February 2018, security researcher Tavis Ormandy of Google Project Zero discovered that Grammarly’s Chrome and Firefox extensions exposed authentication tokens to any website, as reported by SecurityWeek. This bug could let a malicious site access documents saved in the Grammarly Editor. Grammarly patched the flaw within hours and stated it had no evidence users were compromised.
The 2026 “Expert Review” Lawsuit
In March 2026, journalist Julia Angwin filed a class action lawsuit in the Southern District of New York alleging that Grammarly’s “Expert Review” feature used the names and identities of hundreds of writers and academics without consent, as reported by Plagiarism Today. Superhuman disabled the feature, and CEO Shishir Mehrotra apologized on LinkedIn. These are allegations, the case is not decided, and it involves writer identities rather than a data breach.
Is Grammarly Safe for Confidential Documents?
When working under strict client agreements, the answer to is Grammarly safe for confidential documents starts with your contract terms. Looking at institutional policies provides a clear benchmark: Seattle University approves Grammarly for use, on condition that it is disabled when working on documents with high-risk data, according to the official Seattle University Policy.
This is a smart rule for freelancers asking is Grammarly safe for NDA work. Many client non-disclosure agreements strictly restrict sharing proprietary text with third parties, and Grammarly is an external third-party cloud service. Pasting client drafts into Grammarly transmits data over the internet. To keep your freelance operations professional and transparent, review your contracts and follow standard protocols for AI disclosure to clients.
How to Use Grammarly Safely on Client Work (Checklist)
Wondering is Grammarly safe for work? Follow this practical seven-point checklist before editing client copy:
- Turn Off AI Training: Switch off “Product Improvement and Training” in your privacy settings, or ask your administrator to disable it.
- Delete Finished Documents: Delete documents you no longer need from the Grammarly Editor.
- Turn Off Grammarly on NDA Work: Turn Grammarly completely off when working on NDA-covered documents and private client portals.
- Never Paste Personal Data: Keep client names, addresses, IDs, health details, and payment information out of the editor.
- Review Client Agreements: Check your client contracts for clauses restricting third-party tools or cloud text processors.
- Use Enterprise Accounts When Needed: If a client requires it, use a Business or Enterprise account bought through Grammarly’s sales team, where training is off by default.
- Verify Privacy Settings: Re-check your settings after major product updates and tell clients how you use editing assistants.
For more steps on safeguarding your solo freelance business, read our complete freelancer cybersecurity checklist.
FAQ: Is Grammarly Safe?
Final Take: Is Grammarly Safe for Client Work?
So, is Grammarly safe? Technically, yes: it offers encryption in transit and at rest and independent certifications such as SOC 2 and ISO 27001. However, freelance writers handling confidential client deliverables must change their default training settings and keep high-risk NDA files out of the editor. To evaluate other vetted writing software, review our list of the best AI tools for freelancers and read our complete guide to AI tools for freelancers. You can also read our privacy check on is DeepSeek safe to see how alternative tools compare on client confidentiality. For recorded client calls, read is Fireflies AI safe. If Meta AI shows up in your client chats, read is Meta AI safe.
