TED Fellow Nighat Dad studies online harassment, especially as it relates to patriarchal cultures like the one in her small village in Pakistan. She tells the story of how she set up Pakistan's first cyber harassment helpline, offering support to women who face serious threats online. "Safe access to the internet is access to knowledge, and know...

Could someone hack your pacemaker? Avi Rubin shows how hackers are compromising cars, smartphones and medical devices, and warns us about the dangers of an increasingly hack-able world.

The Internet connects billions of people and machines; it's the backbone of modern life. But tech pioneer Danny Hillis thinks the Internet just wasn't designed to grow this big -- and he fears that one big cyber-attack or glitch could shut it down and take civilization with it. To head off a digital dark age, he sounds a clarion call to develop ...

Richard Ledgett is deputy director and senior civilian leader of the National Security Agency. He acts as the agency’s chief operating officer, responsible for guiding and directing studies, operations and policy.

Lorrie Faith Cranor studied thousands of real passwords to figure out the surprising, very common mistakes that users -- and secured sites -- make to compromise security. And how, you may ask, did she study thousands of real passwords without compromising the security of any users? That's a story in itself. It's secret data worth knowing, especi...

Chris Domas is an embedded systems engineer and cybersecurity researcher.

Fascinating, forward-thinking talks that highlight the importance of diversity — in its many forms — within the tech industry. (Curated in partnership with the National Security Agency.)

Every day, a sea of decisions stretches before us, and it's impossible to make a perfect choice every time. But there are many ways to improve our chances — and one particularly effective technique is critical thinking. Samantha Agoos describes a 5-step process that may help you with any number of problems. [Directed by Nick Hilditch, narrated b...

Hacker and writer Joshua Klein is fascinated by crows. (Notice the gleam of intelligence in their little black eyes?) After a long amateur study of corvid behavior, he's come up with an elegant thought experiment: a machine that could form a new bond between animal and human.

Sebastián Bortnik's work is focused on preventing cyber attacks.

Ralph Langner is a German control system security consultant. He has received worldwide recognition for his analysis of the Stuxnet malware.

The beauty of hackers, says cybersecurity expert Keren Elazari, is that they force us to evolve and improve. Yes, some hackers are bad guys, but many are working to fight government corruption and advocate for our rights. By exposing vulnerabilities, they push the Internet to become stronger and healthier, wielding their power to create a better...