Citadel Securities analyst Frank Flight laid out why the grim future envisioned in Citrini Research's note is likely to ...

As newsrooms sift through millions of Epstein files, citizen journalists are joining the effort — uncovering new details.

Bulwark Live: SOTU will start at 8:50 p.m. ET on Substack and YouTube. Sam Stein and Andrew Egger will kick off the night ...

PCWorld reports that Substack experienced a data breach in October 2025, exposing email addresses and phone numbers of approximately 697,000 users. The company discovered the security flaw on February ...

If you have accounts on any of these services, now's a good time to check your security settings. Plus more from a busy week in cybersecurity chaos. I've been writing and editing stories for almost ...

The breach happened in October, but was detected by Substack on February 3rd. The breach happened in October, but was detected by Substack on February 3rd. is a news writer focused on creative ...

Newsletter platform Substack is notifying users of a data breach after attackers stole their email addresses and phone numbers in October 2025. Although the incident occurred four months ago, CEO ...

The company has emailed affected users after a dark web source claims the data of almost 700,000 users was compromised. Substack, a high-profile publishing platform widely used by academics, ...