773 Million E-mail Address Compromised

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773 Million E-mail Address Compromised

The Australian Cyber Security Centre (ACSC) is aware of a significant data breach affecting 773 million email addresses and usernames.


Titled ‘Collection #1’, the data breach was made public by Australian cyber security expert Troy Hunt, who identified that a large collection of email addresses, hashed and plaintext passwords had been distributed on a known hacking forum.


Unlike other data breaches, this breach cannot be tied down to one site. Instead it appears to comprise multiple breaches across a number of websites/services.

To find out if your email has be compromised visit the Have I Been Pwned service and verify your e-mail address has not been compromised. It is also a good idea to test other addresses you have.


If you find that your address has been caught up in this please contact us for assistance if need be.


There are a few simple steps you can take to help keep your information safe:

  • Use a strong password and don’t re-use the same password on multiple websites.
  • Change your password on any accounts where you may have used the same email and password combination.
  • Use multi-factor authentication where available to give your accounts an extra layer of security.