I-Worm/Siney.b（正弦）病毒
I-Worm/Siney.b是一种群发邮件的网络蠕虫病毒，它是通过Outlook向地址薄中的所有收件人发送带有自身的电子邮件进行传播的。病毒感染后，会在系统的多处复制多个病毒文件，并试图删除桌面上的所有图标以及系统文件，反病毒软件等文件对系统进行破坏。该病毒所发送的邮件具有如下特征：
Subject（主题）: Fwd:None
Message（内容）: Do you want to surprise you wife or husband? Do you want to do
something Romantic for them? Wanna find out how to get lucky ;? Sydney has made
this Awesome Document Attached. It tells men everything a Lady wants! And
ladies you can add stuff onto it before forwarding it to all
your freinds.
Attachment（附件）: Attach.exe
该病毒可以影响的平台包括：Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP