Substack data breach + Ad Spending Surge

February 11, 2026 |
Keenen Charles

This week Substack revealed they suffered a data breach last year that exposed some users' emails and phone numbers There's also a look at an ad spending surge in newsletters, and more.

Also the featured newsletters this week cover vintage tech, AI, cloud computing, and more!

📰 News & Articles

Substack data breach exposed users’ emails and phone numbers

Substack has suffered a data breach that exposed the email addresses and phone numbers of some users.

Newsletter ad spending surged 40%

Paved's 2026 report reveals newsletter publishers earned 30% more revenue while 64% of marketers adopted the channel.

How Marketers Budget and Scale Newsletter Advertising

Three email advertising experts share how marketers budget and scale newsletter advertising in 2026.

Revealed: How Substack makes money from hosting Nazi newsletters

The Guardian has released an investigation into Substack’s business model, revealing that the platform has profited from hosting newsletters that promote Nazi ideology.

How to Start a Newsletter for Free in 2026

Learn how to start a newsletter for free in 2026 with this comprehensive guide.

⭐ Featured Newsletters

Bite Sized Bots

Human-First AI tips for small business owners

Obsolete Sony’s Newsletter

Documenting the Golden Age of electronics

Re:connaissance

Essays & Reports on Data, Design and Visual Representation

Smart Movers Club

If you have money to move or money to make start here

The Cloud Cover

Your weekly briefing on cloud computing.

See Ya

This is our weekly newsletter covering tips and tools for newsletter operators and everything else happening in the email newsletter space. Hope you enjoyed it!

Keenen Charles

Keenen is the creator of InboxReads and a believer in the future of newsletters and email for sharing great content.

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