When the Internet is in danger, the cat signal will appear. Internet Defense League You’ve heard of the bat signal—now get ready for the cat signal. A diverse crew of Internet businesses, advocacy groups, and lawmakers has banded together to create something called the Internet Defense League . The organization seeks to save the ‘Net from bad laws like SOPA. And a cat signal—modeled after the signal used to rouse Batman each time Gotham City is threatened—is what the group will use to alert the world when it’s protest time.

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Internet Defense League creates "cat signal" to save Web from next SOPA