I haven't sworn off Facebook. I'm on Facebook. There's a fan page on Facebook that I will update, but I'm on there myself under a pseudonym, because there were a lot of people able to private-message me on Facebook, and it was getting really weird.
I met some fans who said, 'Please start Twittering!' They even walked me through it, but I'm terrible at it. I'm so bad at keeping it up. I forget how to use it. And I'm not very savvy: I try to send a private message, and it goes out to everybody.
As a general rule, I wouldn't put anything in a text or e-mail or on social media that I wouldn't want the whole world to see.
One thing Telegram does is make mass surveillance impossible.
Texting is a supremely secretive medium of communication - it's like passing a note - and this means we should be very careful what we use it for.
Our focus remains on delivering the promise of WhatsApp far and wide so that people around the world have the freedom to speak their mind without fear.
In terms of security and privacy, what people care about the most is the privacy of their messages.
'Instagram' Direct is a really interesting feature because it's grown significantly since we launched it. People continue to use it to communicate more privately.
You don't have to give us your name and we don't ask for your email address. We don't know your birthday. We don't know your home address. We don't know where you work. We don't know your likes, what you search for on the internet or collect your GPS location. None of that data has ever been collected and stored by WhatsApp, and we really have no plans to change that.
We can still publicly post a message to Facebook that's globally readable. But we could also adjust things so that they can only be shared with those closest to us, and the confident that this is enforced through both legal and a systemic standards-based protection.
There is in essence no difference between a sealed letter and a telephone call.
40 years later privacy rights were afforded to telephone calls
In this age of communications that span both distance and time, the only tool we have that approximates a 'whisper' is encryption. When I cannot whisper in my wife's ear or the ears of my business partners, and have to communicate electronically, then encryption is our tool to keep our secrets secret.
Social systems have values - arguments baked into their design. For example, Twitter's core argument seems to be, 'Everything should be public, and messages should find the largest audience possible.' Snapchat's might be, 'Communication should be private and ephemeral.'
I don't even know how to Direct Message someone on Instagram. I still write letters.
Snapchat is a really intimate medium.
'Instagram' is great if you want to share photos, but you're not that technical. Or, if you're not interested in sharing publicly, 'Instagram' becomes a place where you can not only consume photos and videos from musicians, or whoever, but send them directly to your friends.
If you have WhatsApp and your phone goes down, you don't have access to your messages. You can't send documents and it's not private.
DMs are a lot like email - and should have the same privacy protections as a mailed letter.
The thing about Snapchat is it is ephemeral, so you don't - it's not like a video that you post to YouTube and then everyone can see it. It's this video that you get to share this kind of very intimate experience again, this very kind of genuine experience with another person in a more one-on-one sort of way. And I really appreciate that.
I'm most active on Instagram, then Twitter, and then Facebook. I haven't opened up Snapchat for the public; it's only for my friends.
In some ways, you can think of end-to-end encryption as honoring what the past looked like.
I haven't sworn off Facebook. I'm on Facebook. There's a fan page on Facebook that I will update, but I'm on there myself under a pseudonym, because there were a lot of people able to private-message me on Facebook, and it was getting really weird. And then with MySpace, I just don't read messages. I delete everything, and I just post updates every now and then.
If I know what your messages are, if I can read those, I'll probably be able to conclude where you're going, who you're with, the location the message was sent.