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 ...

Newsletter platform Substack has confirmed it suffered a security incident, leading to the compromise of users’ email addresses and phone numbers. Chris Best, the CEO of Substack, notified users of ...

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 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, ...

Popular newsletter platform Substack is the latest company to confirm it experienced a security incident, in which users' email addresses and phone numbers were exposed. According to an email sent to ...