1Xbox Underground
From 2011 to 2013, a hacker group named Xbox Underground repeatedly broke into Microsoft's computer network using stolen credentials. They even were able to walk into Microsoft's headquarters in Redmond. Walking out again, they took three unreleased Xbox One dev kits with them.
2Vestal Virgins
The Vestal Virgins were a group of 6 women who were recruited at the age of 6 to tend the flame of the Goddess Vesta in Ancient Rome. Expected to serve for 30 years, if their virginity ever came into question they were be buried alive as punishment.
3Edelweiss Pirates
The Edelweiss Pirates was a youth group in Nazi Germany dedicated to opposing the Hitler Youth. Their resistance included spreading Ally propaganda in Germany, aiding German deserters, and even starting street fights with the Hitler Youth whenever possible.
4Grandpa Gang
The “Grandpa Gang,” was a group of men the oldest being 76, who committed the biggest bank robbery in English history. After climbing down an elevator shaft and drilling through a concrete wall they stole more than $200 million in cash and jewels.
550-Cent Party
The 50-Cent Party is a group of trained internet commentators who are paid 50 cents per post by the Chinese government to sway public opinion in their favor.
6The Poison Squad
In the early 1900s, a group of U.S. government scientists started a private dinner club, in which they only ate poisonous food. They documented their illnesses in order to convince Congress to pass food safety laws. They were called "The Poison Squad."
7Acciōn Ortogrāfica Quito
In Quito, Ecuador, a group of vigilantes known as “Acciōn Ortogrāfica Quito” go around correcting all the bad grammar they find in graffiti.
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8Yamaguchi-Gumi
Japan's largest Yakuza group, the Yamaguchi-Gumi, holds an annual Halloween party for neighborhood children in Kobe. "Not only were the decorations great and the gift bags full of tasty stuff, there were two big lines for cotton candy. And the gangsters were super nice."
9Cultural guerrillas
“Cultural guerrillas” is a group of illegal restorers who once broke into the Paris Panthéon, set up a secret workshop, and then repaired the monument's broken clock.
10Just Missed it Club
The “Just Missed it Club” were a group of people who, for one reason or another did not sail on the Titanic. One of these members was Alfred Gwynne Vanderbilt, son of the late shipping and railroad mogul Cornelius Vanderbilt. He died in the Lusitania disaster 3 years later.