3 February 2014

On 30 January 2014, Yahoo! confirmed that user names and passwords for its Yahoo Mail accounts were stolen in a cyber attack. Australian Yahoo Mail users are likely to be included.

Yahoo states that affected users should have already been prompted to change their password.

We advise anyone who uses Yahoo Mail to also change their password as a precaution. Yahoo has currently provided limited information about the attack.

It has stated its own systems were not breached, and that user names and passwords were stolen from a third-party database. There are estimated to be more than 270 million Yahoo Mail accounts worldwide, but it is not known how many accounts could be affected by this attack.

In addition to changing passwords, Yahoo is encouraging users to use “second sign-in” (two-factor) authentication as an additional layer of security for their accounts.

Yahoo has also stated that it has implemented, “additional measures to block attacks against Yahoo!’s systems.”

Yahoo also offers advice on its website about safeguarding your account.

More information

Stay Smart Online has previously discussed setting passwords, including what makes a strong password and why it’s important.

You can also read about two-factor authentication on our site.

The information provided here is of a general nature. Everyone's circumstances are different. If you require specific advice you should contact your local technical support provider.


Thank you to those subscribers who have provided feedback to our Alerts and Newsletters. We are very interested in your feedback and where possible take on board your suggestions or requests.


This information has been prepared by Enex TestLab for the Department of Communications ('the Department'). It was accurate and up to date at the time of publishing.

This information is general information only and is intended for use by private individuals and small to medium sized businesses. If you are concerned about a specific cyber security issue you should seek professional advice.

The Commonwealth, Enex TestLab, and all other persons associated with this advisory accept no liability for any damage, loss or expense incurred as a result of the provision of this information, whether by way of negligence or otherwise.

Nothing in this information (including the listing of a person or organisation or links to other web sites) should be taken as an endorsement of a particular product or service.

Please note that third party views or recommendations included in this information do not reflect the views of the Commonwealth, or indicate its commitment to a particular course of action. The Commonwealth also cannot verify the accuracy of any third party material included in this information.


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