[NegativeLatency]

The shooter had an iPhone 5C[1], which according to the article uses USB, so the DMA PCIe exploit detailed here wouldn't work for it.

Not saying it wasn't something similar, but it could have been pretty different.

1. https://en.wikipedia.org/wiki/FBI–Apple_encryption_dispute

[DiabloD3]

It has a Lightning port, so maybe a different at-the-time undisclosed DMA exploit?