I have only heard of the name
stuxnet very recently, maybe some here know more

. Since there is so much malware to analyze
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so there are many reasons *why* malware researchers specialize.
The main story is about a SCADA Worm attacking various targets such as
Iran or
Siemens on the Internet as reported by the press.
From the Mandiant blog:
Tuxnet Memory Analysis and IOC creationQuote:
The stuxnet malware has been making the press recently for two reasons. First it contains two drivers signed with a legitimate (at the time) cert. Second is it’s targeting SCADA systems. The malware is cool for a host of other geeky reasons. ...