DDoS attack hits Optus international link

DDoS attack hits Optus international link

Access to websites through Optus links and sites hosted overseas affected

A distributed denial-of-service (DDoS) attack temporarily brought down Optus’ international transit links and disrupted Australian Internet services on Wednesday, April 14.

A number of Optus enterprise customers reported experiencing difficulty connecting to websites hosted outside of Australia on various user forums. ARN parent company, IDG Communications, was first alerted to problems with its own local Optus connectivity at 12.15pm and by 1pm, IDG staff were unable to reach some international sites.

An Optus spokesperson confirmed its business Internet customers experienced congestion due to a DDOS issue with the company’s international link. The issue began at 1.10pm and was resolved at 3.25pm, the spokesperson stated.

The sites were either loading very slowly, or not at all due to high levels of packet loss during data transit.

A source close to the telco attributed the event to a DDoS attack originating from China. Optus declined to comment further on the attack and was unable to verify how many business customers were affected across Australia.

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