An Update on the Rustock Botnet

In March, we announced that Microsoft had, with the help of industry partners and law enforcement, taken down the notorious spamming botnet, Rustock.

Since that time, I’m happy to report that the botnet has stayed dead. Our technical countermeasures have worked effectively to prevent the bot’s self-defense mechanisms from reanimating it. Moreover, in the months since the takedown, we’ve seen the number of infected IP addresses (a loose proxy for the number of infected computers) decline as more and more people update their software or get malware removed from their PCs.

For more on this developing story, read today’s post on the Official Microsoft Blog.

About the Author

Senior Attorney, Microsoft Digital Crimes Unit