BW says this:
Nine months later, the consequences of that decision still reverberate. Though none gathered at Murdoch’s home that evening could have foreseen the slew of allegations, arrests, and public outrage that loomed, by sticking with London’s effort to quarantine the scandal, Brooks and James Murdoch were, in particular, suspected of a coverup.
“Quarantine” is a nice and neutral word for cover up, which is what was happening here.
Great work by Farrell and BusinessWeek.