Is Substack Safe?
Owned by Substack Inc. • Last updated January 2026
📊 What Data Does Substack Collect?
Substack has moderate data collection practices. Here's what they collect:
- posts
- photos
- contacts
- location
- browsing behavior
- device info
This level of data collection is typical for apps in the social media category.
Why This Matters
The data Substack collects can be used for personalization, advertising, analytics, and may be shared with third parties. Understanding what's collected helps you make informed privacy decisions.
🔒 Substack Encryption & Security
Encryption Level: Partial
Encryption in transit and at rest. Not end-to-end encrypted.
What This Means For You
Your data is encrypted during transmission but may be accessible by the company on their servers.
🔗 Does Substack Share Your Data?
Third-Party Sharing: Limited
Limited data sharing with service providers. Substack Inc. uses data for product improvement.
✅ What's Good
- Partial encryption
- Good privacy controls
❌ Concerns
- Moderate data collection
🔄 Safer Alternatives to Substack
Looking for more privacy-focused options? Consider these alternatives:
🛡️ Recommended Privacy Products
Enhance your privacy when using Substack with these tools:
As an Amazon Associate, we earn from qualifying purchases. This helps support our privacy research.
❓ Frequently Asked Questions
Last updated: January 2026 • Review by PrivacyDefend Research Team