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

Publishing platform Substack has disclosed a data breach that leaked nearly 700,000 user records after an unauthorized third-party exploited a security flaw.

SoundCloud data breach exposes 29.8 million users' email addresses and profile data to hackers, leaving affected users locked ...

The digital publishing platform Substack has told some of its users that their data was stolen in a security breach. The affected account holders had their email addresses and phone numbers scraped in ...

Photo-sharing community platform Flickr is notifying users of a data security incident that exposed their personal information.

Stolen login credentials led to the most damaging email-related healthcare breaches in 2025, exposing more than 630,000 patient records even though these attacks represented less than one-fifth of ...

For a long time, I considered extra encryption for email unnecessary and a bit overkill. My argument was that if spam filters and strong passwords exist, what's the point in using a secure and ...

Flickr has disclosed a data security incident where user personal information was exposed through a third-party email service ...

Substack has confirmed a major data breach that exposed emails and phone numbers for approximately 700,000 users, with the ...

Flickr has 35 million monthly users and hosts 28 billion photos. It has now also confirmed a potential data breach.

The company has emailed affected users after a dark web source claims the data of almost 700,000 users was compromised.