Substack said that customer data was accessed in October 2025, but wasn't discovered until early February.

"We're moving quickly," Farrah Storr, head of international at Substack, tells THR after hiring Mark Swierszcz as its new Canadian head of partnerships, with more country hires in the works worldwide.

Substack won't share official numbers, but it seems like a pretty significant data breach.

Like Charli xcx, Lizzo, Rosalía, and many others, Troye Sivan has officially joined the fray on Substack, the internet’s hottest newsletter platform (that seems more and more like a good ol' fashioned ...

Solopreneurs like Katrina Purcell and Gigi Robinson use AI tools to optimize their content creation, boost efficiency, and enhance lead generation.

Substack, a newsletter platform that has curried favor with independent publishers for its low barrier to entry and revenue-generating opportunities, has launched a dedicated streaming app for two ...

You can talk to the chatbot like it's a friendly acquaintance, and it'll help you get a lot done. Amanda Smith is a freelance journalist and writer. She reports on culture, society, human interest and ...

Almost eight in ten of the biggest news websites in the UK and US are now blocking AI training bots. This week in London publishers were told it is “never too late” to begin blocking the bots due to ...

If you’re impacted by the security incident, you’ll hear directly from the brand with an email from Substack's CEO.