Access member only content, take part in discussions with comments on blogs, news and reviews and receive all the latest security industry news directly to your inbox. Join now for free.
Processing registration... Please wait.
This process can take up to a minute to complete.
A confirmation email has been sent to your email address - SUPPLIED EMAIL HERE. Please click on the link in the email to verify your email address. You need to verify your email before you can start posting.
If you do not receive your confirmation email within the next few minutes, it may be because the email has been captured by a junk mail filter. Please ensure you add the domain @scmagazine.com.au to your white-listed senders.
Telecom NZ has conceded that some 22,500 users of its Yahoo! Xtra email customers have been hacked.
Users of the Yahoo! Xtra email service, operated by Yahoo! and open only to Telecom NZ subscribers, were targeted by hackers last weekend.
The service has attracted about 450,000 subscribers, of which five percent were affected.
Read: Choosing a good passw0rd
"Telecom, in conjunction with email provider Yahoo!, has identified that up to approximately five percent of Yahoo! Xtra email customer accounts have been sending malicious emails – most likely without the customer’s knowledge, after their email account was accessed," the telco said in a statement.
Some 50,000 subscribers have changed their passwords since accounts were compromised last weekend.
Yahoo! said attackers gained access to customer account email addresses but had "currently no evidence" that further information was compromised.
However, Telecom NZ is following up with customer reports that more data was accessed.
Yahoo! could lose its email outsourcing deal with the telco following the breach, according to a Telecom NZ spokesperson, who indicated the service may be pulled in-house.
Telecom NZ retail boss Chris Quin says Yahoo! "has given Telecom an assurance" that the spamming will stop if users change their passwords.
Hacked users won't have a choice however, as the telco kicks off a password refresh program. It will warn customers by email and phone, including 10,000 today.
“If customers are not able to personally change their password within around 24 hours of our notification, we have a contingency process in place which will require customers to change their password the next time they access their email account,” Quin said.
It urged any users who receive spam from contacts to send a new email to the victim asking them to change their passwords.
“We would like to thank the around 5000 affected customers who have changed their passwords in recent days. Yahoo! has assured us that malicious emails are no longer being sent from these accounts,” the telco said in a statement.
Copyright © SC Magazine, Australia
To begin commenting right away, you can log in below or register an account if you don't yet have one. Please read our guidelines on commenting. Offending posts will be removed and your access may be suspended. Abusive or obscene language will not be tolerated. The comments below do not necessarily reflect the views or opinions of SC Magazine, Haymarket Media or its employees.