The Dutch High Tech Crime Unit and Kaspersky turn the tables on the Shadow botnet.

Police nab Shadow creators, force botnet to commit suicide - Ars Technica

The arrests actually occurred several weeks ago, on July 29, but it's what happened afterwards that has made this situation interesting. Instead of simply shutting the botnet down, the High Crime Tech Unit took control of it. Once Shadow was secured, the police contacted Kaspersky Labs about providing a means to neutralize the malware. Kaspersky has made their fix public, and will also deploy the instructions over the Shadow botnet itself.
Now I'm curious as to how they were able to catch the pair in the first place. I thought botnet operators were notoriously "shadowy"...