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Data breaches → KomikoAI

Was your data in the KomikoAI breach?

2026 · komiko.app · ~1,060,191 accounts exposedLow severity · 3/10

KomikoAI (komiko.app) suffered a data breach in 2026 that exposed around 1,060,191 accounts. If you had an account, some of your personal data may be circulating in leaked databases. The fastest way to know is to check your own email — free, in about 30 seconds, no password required.

What happened

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.

Breach details sourced from Have I Been Pwned, the industry-standard breach database. Risk analysis by Nullivo.

What was exposed, and why it matters

Not all breaches carry the same risk — what matters is which fields leaked. Here is what the KomikoAI breach exposed and what each item actually enables:

Names and usernames

Links this leak to your other accounts — a reused username lets anyone build a profile of you across platforms.

Email addresses

Puts you on spam and phishing lists, and confirms to attackers that you hold an account with this service — which makes impersonation emails more believable.

Also listed in this breach: AI prompts, Email addresses, Forum posts, Names.

What to do if you were affected

These steps are ordered for this specific breach — the most urgent action given what leaked comes first.

  1. Names and usernames: Search your usual username to see what else it exposes, and use distinct handles for sensitive accounts.
  2. Email addresses: Treat any message referencing this service with suspicion, and never act on links in unexpected emails.
  3. Check whether your own email appears in this breach — run a free scan to confirm before you spend time on the steps above.

How urgent is this now?

This breach is recent, so the data is actively traded and the risk is at its highest right now.

Remember: a breach can't be "un-leaked" — once a database is out, it exists in countless copies. The goal is to make the leaked data useless: change what can be changed, lock down what can't, and remove what has been republished.

Check if your email was exposed.Nullivo's free scan checks your own verified email against known breaches — including KomikoAI — in 30 seconds. No password, no signup, and we only ever scan your own email. Run your free scan →

Frequently asked questions

What data was exposed in the KomikoAI breach?

The KomikoAI breach exposed names and usernames, email addresses. Links this leak to your other accounts — a reused username lets anyone build a profile of you across platforms.

How many people were affected by the KomikoAI breach?

Around 1,060,191 accounts were exposed, making it a large breach.

What should I do if I had a KomikoAI account?

Search your usual username to see what else it exposes, and use distinct handles for sensitive accounts. You can check whether your own email appears in this breach with a free Nullivo scan — no password required.

Breaches that exposed similar data

If the KomikoAI breach affected you, these breaches exposed comparable information — worth checking too, since leaked datasets are routinely combined.

See all breaches we cover →