IM is inherently new to a lot of people, ... There is big gap between regular users and those who feel that it's disruptive and don't see how it will integrate.

We've done a much better job of locking down e-mail, ... People are turning to instant messaging as the new attack vector.

[Although some IM attacks are becoming more innovative, most worms of this type are] kind of crude to date, ... but crude is working very effectively. Unfortunately, the one thing I've learned in this business is that [virus writers] will innovate.