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Optus confirms DDos attack

A CYBER attack earlier today left Optus's business customers with limited internet access to the US and wreaked havoc on corporate email systems.

An Optus spokeswoman confirmed that a denial-of-service attack on one of the carrier's business customers swamped the link, slowing internet traffic to a trickle.

It's understood that the attack caused major email outages for companies using US-based spam-filtering services. As the link slowed down hundreds of thousands of messages were caught in a backlog that delayed email service by hours.

Optus declined to reveal which of its customers had been hit by the attack.

The carrier said that the link was restored at around 3.30 pm EST.
 

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