Grammarly scores 4/5 for encryption, 2/5 for privacy, and 3/5 for track record. Overall safety score: 3/5.

What are the privacy concerns with Grammarly?

Grammarly security review covering data access, text analysis privacy, and browser extension risks.

Has Grammarly been hacked before?

See our detailed analysis of Grammarly's past security incidents and track record at The Opt-Out Project.

Is Grammarly Safe? Security Review

Name: Is Grammarly Safe? Security Review
Item: Grammarly
Rating: 3
Author: The Opt-Out Project

Category: Productivity Company: Grammarly, Inc. Reviewed February 10, 2026

3/5

Overall Safety Score

★ ★ ★ ★ ★

Verdict: Grammarly is technically secure but its core function requires reading everything you type across all websites and apps. This level of access is a significant privacy trade-off that users should understand.

Grammarly is a writing assistant used by over 30 million daily active users. Its browser extension and keyboard app read everything you type to provide suggestions, creating significant data access that many users don't fully consider.

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Security Ratings Breakdown

Category	Score	Rating
Encryption	4/5
Privacy	2/5
Track Record	3/5

Security Features

SOC 2 Type II compliance
AES-256 encryption
Enterprise security controls
GDPR and CCPA compliance
Two-factor authentication

Privacy Concerns

Browser extension reads ALL text you type on every website (including passwords, banking sites, private messages)
Text snippets sent to Grammarly servers for analysis
User writing data used to improve AI models
Enterprise version more private, but personal version retains broad data use rights
Keyboard app version reads all mobile typing

Past Security Incidents

2018 browser extension vulnerability allowed any website to access user's documents, auth tokens, and data from Grammarly's server (patched quickly)
No major data breaches as of 2025

How to Stay Safe Using Grammarly

Disable Grammarly on sensitive sites (banking, healthcare, email with confidential info)
Use the site blocklist feature to exclude sensitive websites
Review and limit data sharing in account settings
Consider using Grammarly only in specific writing apps, not as a browser extension

Safer Alternatives

LanguageTool (open-source, self-hostable)
ProWritingAid (alternative writing assistant)
Built-in browser/OS spell check (no cloud processing)

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Last updated: February 10, 2026