Breach occurred 2014-05-26Verified

Avast data breach

avast.com

What happened

In May 2014, the Avast anti-virus forum was hacked and 423k member records were exposed. The Simple Machines Based forum included usernames, emails and password hashes.

422,959 accounts affected

Breach date 2014-05-26

Data exposed

Email addressesPasswordsUsernames

Frequently asked questions

When did the Avast data breach happen?

The Avast data breach occurred on May 26, 2014. It was added to Have I Been Pwned's breach catalog on March 12, 2016.

How many accounts were affected by the Avast breach?

422,959 accounts were affected by the Avast data breach, according to Have I Been Pwned's records.

What data was exposed in the Avast breach?

The Avast breach exposed the following data types: Email addresses, Passwords, Usernames.

Is the Avast breach verified?

Yes. Have I Been Pwned has verified the Avast breach, meaning there's confirmed evidence the exposed data is genuine and tied to real accounts.

How do I check if my email was affected by the Avast breach?

Use KazaSec's free Email Breach Checker (/tools/breach-check) to check whether a specific email address has surfaced in the Avast breach, or any other known breach — the tool never stores what you search.

Was your own email in this breach?

Our free Email Breach Checker tells you whether a specific email address has surfaced in this breach — or any other known breach — without ever storing what you search.

Check your email →

Talk to us about this

Security Consulting

Understand what a breach like this would actually cost you, and how to reduce that risk.

Penetration Testing

Find the same class of gap before it leads to a breach like this one.

View on Have I Been Pwned

Don't want to end up on this list?

We help organizations find and fix the gaps that lead to a breach, before they do.

Request a Security Assessment Browse Services