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The future of digital communication and privacy | Will Cathcart

Visit to get our entire library of TED Talks, transcripts, translations, personalized talk recommendations and more. People send 100 billion WhatsApp messages every day — and they’re all encrypted to protect them from potentially curious entities like companies, governments and even WhatsApp itself. With our increased reliance on digital communication tools during the COVID-19 pandemic,…

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4 years ago

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Visit to get our entire library of TED Talks, transcripts, translations, personalized talk recommendations and more.

People send 100 billion WhatsApp messages every day — and they’re all encrypted to protect them from potentially curious entities like companies, governments and even WhatsApp itself. With our increased reliance on digital communication tools during the COVID-19 pandemic, our fundamental right to privacy is more important than ever, says Will Cathcart, head of WhatsApp. He describes the tech and protocols the company built to prevent encryption services from being misused to spread disinformation or commit crimes — while still safeguarding privacy. (This virtual conversation, hosted by head of TED Chris Anderson, was recorded June 16, 2020.)

The TED Talks channel features the best talks and performances from the TED Conference, where the world’s leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design — plus science, business, global issues, the arts and more. You’re welcome to link to or embed these videos, forward them to others and share these ideas with people you know. For more information on using TED for commercial purposes (e.g. employee learning, in a film or online course), submit a Media Request here:

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18 Comments

18 Comments

  1. Franklin McClure

    July 28, 2020 at 9:20 pm

    I HATE IT ALREADY.

    Reply

  2. Paul Jansen

    July 28, 2020 at 9:25 pm

    why even care…privacy seems to be a concept from the past…just behave somewhat sane and you’ll be fine…

    Reply

  3. Aryaman Sharma

    July 28, 2020 at 9:26 pm

    Who is not from America ❓
    Give a like👍

    Reply

  4. Ash Pragasam

    July 28, 2020 at 9:28 pm

    Watch to the end. Two blue ticks appear

    Reply

  5. Thomas Young

    July 28, 2020 at 9:32 pm

    0:53
    hot-dataing.online

    Reply

  6. Anthony Gonzalez

    July 28, 2020 at 9:32 pm

    0:53
    hot-dataing.online

    Reply

  7. anki ankita

    July 28, 2020 at 9:37 pm

    1st to like😁

    Reply

    • Alen Lanciotti

      July 31, 2020 at 3:34 pm

      first to dislike you

      Reply

  8. EddieK

    July 28, 2020 at 9:58 pm

    Last
    edit: not anymore

    Reply

  9. ab bbb

    July 28, 2020 at 9:58 pm

    Come on end to end encryption is encrypting the message once it leaves the device, but nothing is said about authentication of the recipient, the key used to encrypt the message is known by each endpoint and therefore defeats the purpose of the private communication. the device sending and receiving is not protected and when you type or read the message, the information are left in clear on a non secured device. This means the NSA/CIA/consort has the mean to freely access the information without needing any consent and the only privacy you have is toward an non erudite spy or your neighbour who is not interested in your conversation. Authenticating the recipient is not even done.

    Reply

  10. 구독하든말든알아서하셈

    July 29, 2020 at 2:47 am

    한국인 있나

    Reply

    • 파랑이이

      July 29, 2020 at 1:41 pm

      있따

      Reply

  11. Sasmita Nayak

    July 29, 2020 at 4:54 am

    Privacy and WhatsApp
    🤣🤣🤣🤣🤣

    This guy is talking about security and privacy on Whatsapp, nice joke
    What about metadata??
    End to end encryption, do they even know the meaning?

    Thanks for this comedy Dear TED

    Reply

  12. harcharan sidhu

    July 29, 2020 at 11:06 am

    Jatt saab

    Reply

  13. MKgGtKZmHGXglvAL

    July 29, 2020 at 12:41 pm

    1:43 misplaced trust

    Reply

  14. ENCORE

    July 30, 2020 at 12:34 pm

    use signal

    Reply

  15. Bison Bolzelow

    July 30, 2020 at 12:51 pm

    Hm… so he says, Whatsapp ensures great privacy and doesn’t generate much money at the moment…
    This is in contrast to my experiences. After active use of Whatsapp I created a Facebook Account without adding any friends or doing anything at all in it. Irritatingly, after adding my telephone number into the account, Facebook not only suggested telephone contacts as friends but also other people I texted with via Whatsapp, partly having no connection to any of my telephone contacts.
    This makes it hard for me to believe, Facebook doesn’t really profit from my Whatsapp data…
    So I personally don’t trust his statements in those concerns

    (Sorry for the niveau of my English^^)

    Reply

  16. Jack Tellerson

    July 30, 2020 at 1:45 pm

    The US government has been fighting public encryption before public encryption even existed.

    Reply

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Nonprofits & Activism

A New National Park to Reclaim Indigenous Land | Tracie Revis | TED

In a part of the United States with more than 17,000 years of human history, cultural preservation advocate Tracie Revis is working to turn the Ocmulgee Mounds into Georgia’s first national park and preserve. This park would be co-managed by the Muscogee (Creek) Nation, bringing the tribal voice back to an area they were forcibly…

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In a part of the United States with more than 17,000 years of human history, cultural preservation advocate Tracie Revis is working to turn the Ocmulgee Mounds into Georgia’s first national park and preserve. This park would be co-managed by the Muscogee (Creek) Nation, bringing the tribal voice back to an area they were forcibly removed from 200 years ago. Revis explores the complex feelings of caring for this land and shows how it’s fostering healing in return.

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Nonprofits & Activism

Your Invitation to Help Build a Sustainable Future | Jim Snabe | TED

“If we want to avoid a climate disaster, we need much more radical leadership,” says Jim Snabe, who knows a thing or two about leadership as chairman of the world’s largest maritime shipping company. In a stirring talk, he encourages companies to take big, bold actions to tackle climate change — and invites anyone to…

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“If we want to avoid a climate disaster, we need much more radical leadership,” says Jim Snabe, who knows a thing or two about leadership as chairman of the world’s largest maritime shipping company. In a stirring talk, he encourages companies to take big, bold actions to tackle climate change — and invites anyone to join the TED Future Forum, a new initiative focused on the role of business in advancing solutions to the climate crisis.

Countdown is TED’s global initiative to accelerate solutions to the climate crisis. The goal: to build a better future by cutting greenhouse gas emissions in half by 2030, in the race to a zero-carbon world. Get involved at

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Nonprofits & Activism

A Path to Social Safety for Migrant Workers | Ashif Shaikh | TED

Hundreds of millions of migrant workers travel within their countries to seek out means of survival — often leaving behind all they know for months or even years. Many face poverty and exploitation, and they need a robust social safety net to protect them, says migrant advocate and 2023 Audacious Project grantee Ashif Shaikh. He…

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March 15, 2024

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Hundreds of millions of migrant workers travel within their countries to seek out means of survival — often leaving behind all they know for months or even years. Many face poverty and exploitation, and they need a robust social safety net to protect them, says migrant advocate and 2023 Audacious Project grantee Ashif Shaikh. He shares how his grassroots organization Migrants Resilience Collaborative is making life-changing benefits like social security and health care accessible to those who need them while also amplifying migrant voices — paving the way towards a world that supports the workers actually building it. (This ambitious idea is a part of the Audacious Project, TED’s initiative to inspire and fund global change.)

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