Shortly after it was discovered by security researchers, a rogue network linking Apple computers through a Mac Trojan had its nerve center shut down."The command and control server is down," Lysa Myers, a senior security analyst with Mac antivirus softwarea maker Intego, said in an interview. "We talked to the ISP yesterday and had it shut down."Myers wrote in a blog post onÃ'Â Tuesday that Intego's virus scanning program discovered the Mac Trojan, which creates a backdoor in an infected machine.The Trojan resembles malware used in recent months to attack activist websites, although it doesn't appear to be tied to the usual suspects behind those attacks."There have been a lot of Trojans targeting activists, journalists -- people vocal against governments," Myers explained. "This is contin