Security firms Trend Micro and F-Secure reported new malware variants exploiting the PnP hole, while contributors to the Full Disclosure mailing list reported a worm as well. “Likely this is an isolated event, which became newsworthy because CNN got infected,” noted the Internet Storm Center. “We do not see any new threats at this point. Zotob keeps mutating and finding new victims. As seen with prior TCP worms, it is reaching its peak around 3 days after the outbreak.”