This podcast focuses on the Downadup worm and its big impact on malicious code trends in 2009. Commonly known as "Conficker", Downadup was the fifth-ranking global malicious threat observed by Symantec in 2009. Downadup is considered to be responsible for a jump in global worm activity during 2009, as worms rose from 29 percent in 2008 to 43 percent in 2009.