It's no surprise that Twitter is changing the way we communicate with each other — but it's also changing the way we communicate with our government. Meet Arturo Sarukhan, a former ambassador from Mexico and a pioneer in the world of digital diplomacy.

Edward Snowden's biggest legacy may not come from changed laws or powers — it may just be the way that the debate over privacy has forced big companies like Apple and Google to safeguard its customers' information in more ways.

Arnas Fedaravičius is a 23-year-old actor who plays "James Snow," a character on a Russian spy mini-series who seems suspiciously like former NSA contractor Edward Snowden. So what's it's like to be Snowden, right down to the glasses?

The world now officially knows that CIA interrogators tortured and abused prisoners, but what about the men and women who did the job for the military and other parts of the government? One former Army interrogator says torture was never on the table.

Protesters responded to Facebook invitations to help topple Egypt's leader in 2011. These days, a person could be jailed for posting such an invitation.

Chris Doman doesn't want to scare you, but cyber attacks are only getting worse. That's why some hackers like him are pouring their time into "network defense," trying to keep out cyber intruders that want to steal everything from credit card numbers to industrial secrets.

Anonymous has evolved from a band of online pranksters into a legitimate group focused on social activism. But just how much impact is it making? It's uneven, but that doesn't mean the group isn't making a difference, especially in the lives of budding activists.

Today, many private companies have serious cybersecurity chops — but it hasn't been that way for long. Journalist Shane Harris describes the major hacking incident that forced corporations to get serious about cyberwarfare in an excerpt from his book, "@WAR: The Rise of the Military-Internet Complex."

"Meryem" was a force on Twitter during the Gezi Park protests, tweeting news and information in Turkish and in English. She was covering the protests 22 hours a day — but that's a difficult pace to maintain when protest movements lose steam.

"Taylor" trained as a drone sensor operator for six months, learning how to blow up things — and people — across the world with million-dollar equipment. But even though she got to go home every night, a decade of long-distance war has still taken its toll.