KomikoAI data breach: 1.1M accounts exposed
Severity: medium · Patch status: no-fix-needed · Since 2026-03-02
In February, the AI-powered comic generation platform KomikoAI suffered a data breach. The incident exposed 1M unique email addresses along with names, user posts and the AI prompts used to generate content. The exposed data enables the mapping of individual AI prompts to specific email addresses. Exposed data: ai prompts, email addresses, forum posts, names. The breach dates from Feb 25, 2026; Have I Been Pwned loaded it on Mar 2, 2026.
What to do
- If you had a KomikoAI account, change its password and the password of any other account that reused it.
- Turn on multi-factor authentication wherever it is offered.
- Check whether your addresses are in this breach at https://haveibeenpwned.com.
Sources
All live incidents on Threat Watch