A system that can be hacked by lying is not a good system Opinion Yesterday Jacinda Ardern angrily declared that an MIQ worker had lied. That should not be a sufficiently sophisticated technique to get around our border defences, argues Duncan Greive. It emerged yesterday that “case B” in the small yet still concerning cluster of Covid-19 cases related to the Grand Millennium Hotel in Auckland had not been previously been tested since November. This came as something of a surprise, as Covid response minister Chris Hipkins had announced that such tests would be mandatory in September of last year.