Remotely Activated Trojan -or- Remote Access Tool
Online jargon, also known as text message shorthand, used primarily in texting, online chat, instant messaging, email, blogs, and newsgroup postings, these types of abbreviations are also referred to as chat acronyms.
"RAT" also refers to "Operation Shady RAT" in which RAT stands for "Remote Access Tool," a type of software that hackers and security experts use to access computer networks from afar. The earliest breaches date back to mid-2006, but the biggest series of cyber attacks to date in 2011, involved the infiltration of the networks of 72 organizations including the United Nations, governments and companies around the world.The activist groups Anonymous and Lulz Security grabbed the spotlight for temporarily shutting down some high-profile websites and grafitting others.
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NetLingo Classification: Acronyms and Text Message