The W32.Imsolk.B@mm virus (actually a worm), a.k.a. the “here you have” virus has recently plagued major companies including ABC, Disney, Google, Coca-Cola, and NASA.
E-mails that carry the virus contain a link that encourages readers to click on a PDF document file. But rather than a PDF, the file contains a Windows script that transmits a virus and spams the entire contact list of the person who opened the file.
Anti-Virus rule #1: If you don’t know the sender, or were not expecting a file, don’t open the file. E-mail worms impersonate people you know. Be safe and call the sender and ask them if they sent you a file.
Anti-Virus rule #2: Have anti-virus software. Free anti-virus software such as Avast and AVG are grossly insufficient to protect your computer. Don’t use free AV programs, go buy something.
Anti-Virus rule #3: Keep your computer up to date. Download updates for the operating system and every piece of software you have installed on it.
Anti-Virus rule #4: Don’t buy anything that runs Mac OS. Apple users think they’re invincible because most virus authors focus on Windows and Linux. This false sense of security has resulted in totally inadequate protection for Mac OS. Many Apple users have virus infections now and don’t even know it.