[w1kkid]

Hello BreachForums Community,
Today I have uploaded the Substack Database for you to download, thanks for reading and enjoy!



In October 2025, the publishing platform Substack suffered a data breach that was subsequently circulated more widely in February 2026. The breach exposed 663k account holder records containing email addresses along with publicly visible profile information from Substack accounts, such as publication names and bios. A subset of records also included phone numbers. The Substack was breached by @w1kkid.

Compromised data: Bios, Email addresses, Phone numbers, Usernames

Contents Spoiler

The .7z File's MD5 Hash is 46B2E53235D64933EB306A71746D5FDD. In total, there are 689756 records. The file is 239.58MB uncompressed and 64.68MB compressed.

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Database Index <> How To Get Credits

[Asha_Official]

This database meets my quality standards. I’m adding it to my collection.

[fakeman1]

Very nice! cant wait lol

[thelastwhitehat]

It's nice to see some new high quality breaches being shared, I appreciate it.

[xmlrpc]

Thanks for leaking

[JohnMarch]

Thx for sharing

[esta10]

thanks sharing this database,  it is  high quality standards

[joepa]

nice leak thank you!!

[12nio]

thanks yoouu!! gj

[ldopanda2]

Should check that, thanks for the leak