Paul Maley discusses Huawei, national security

Secret intelligence reports given to Australian officials outlined a case in which Chinese espionage services used Huawei's staff to get access codes to infiltrate a foreign network. On Wednesday the GCSB blocked Spark's bid to use Huawei's equipment in New Zealand's new 5G network because it would raise "significant" security risks. Paul Maley is the National Security Editor at The Australian. He talks to Susie Ferguson.