Last Watchdog: The Ominous Downadup/Conficker worm

What would you do if you controlled a botnet 1 million to 12 million strong? That’s the scale of the unnerving Downadup/Conficker worm, which continues to spread, mostly via unpatched Windows PCs inside corporate networks. For the historical backdrop — and informed speculation on the worm’s next moves — click here.

–Byron Acohido