Security experts have warned (http://news.com.com/2100-1002_3-5203384.html?tag=st.lh) that a new MSBlast-like worm may be released during the weekend or early next week. We suggest you update your Windows installation inmediately with all critical patches, same goes for your firewall software and antivirus.

The exploit code has been integrated into remote attack software known as bot software, a move widely considered to be the penultimate stage in a code's engineered evolution from simple script to full-blown worm.