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Data breaches → Stealer Logs, Jan 2025

Was your data in the Stealer Logs, Jan 2025 breach?

2025 · ~71,039,833 accounts exposedCritical severity · 10/10

Stealer Logs, Jan 2025 suffered a data breach in 2025 that exposed around 71,039,833 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 January 2025, stealer logs with 71M email addresses were added to HIBP. Consisting of email address, password and the website the credentials were entered against, this breach marks the launch of a new HIBP feature enabling the retrieval of the specific websites the logs were collected against. The incident also resulted in 106M more passwords being added to the Pwned Passwords service.

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 Stealer Logs, Jan 2025 breach exposed and what each item actually enables:

Passwords

Attackers replay leaked passwords across other sites (“credential stuffing”). Because most people reuse passwords, one leak often unlocks email, shopping and banking accounts elsewhere.

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.

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. Passwords: Change this password everywhere you have reused it, starting with your email account — whoever controls your email can reset everything else.
  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.

Passwords are the reason breach age matters less than people expect. Leaked credentials are compiled into wordlists that get tried against new services for years afterwards, so a password exposed here is unsafe to use anywhere, ever again.

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 Stealer Logs, Jan 2025 — 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 Stealer Logs, Jan 2025 breach?

The Stealer Logs, Jan 2025 breach exposed passwords, email addresses. Attackers replay leaked passwords across other sites (“credential stuffing”). Because most people reuse passwords, one leak often unlocks email, shopping and banking accounts elsewhere.

How many people were affected by the Stealer Logs, Jan 2025 breach?

Around 71,039,833 accounts were exposed, making it a very large breach by any measure.

What should I do if I had a Stealer Logs, Jan 2025 account?

Change this password everywhere you have reused it, starting with your email account — whoever controls your email can reset everything else. 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 Stealer Logs, Jan 2025 breach affected you, these breaches exposed comparable information — worth checking too, since leaked datasets are routinely combined.

See all breaches we cover →