Engineering leader at Meta. ex. Visa, Yahoo, Academic. Advisor and Investor in AI, Security, Privacy, and Crypto.

Joined February 2012
3 Photos and videos
I wonder if the only company that needs to build speech to text is Apple and all the other startups will die or get acquired once it does so. I only use it for coding on a mac and on my iPhone when driving.
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My top use case for new Siri is to ask it for direction on Google maps instead of Apple maps. in one go. But I somehow think it is not happening! Besides imessage and occasionally notes, I don't use Apple's apps. Apple has to hook natively to other apps for new Siri to add value
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Apple dominates the device ecosystem while Google consumer productivity application ecosystem (gmail, mops, google doc/sheet, etc.). It will be an interesting strategic game the two have to play.
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proud of our teams contribution to this major launch. A privacy win for consumers.
Today, we're launching Incognito Chat with Meta AI on @WhatsApp and the Meta AI app, a new way to have completely private conversations with AI. about.fb.com/news/2026/05/in…
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Is it me or is Claude code getting worse? I kept getting frustrated by CC forgetting context and making wrong decision on a personal project. switched to Codex a few days ago. Significantly better! Have not had a single issue yet. I am not sure it is the model or the harness!
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Payman retweeted
I've spent the past week anxiously following the news in Iran. Protests in the last few days have escalated and taken a dark turn. Thousands have been killed or arrested, and the government has cut off phone and internet access, leaving tens of millions of people unable to communicate.  My heart goes out to the innocent people who are affected by all this, including Iranians who live in the US and elsewhere. ❤️ Many are attempting to continue their studies or work and get through their daily lives under the immense pressure of wondering what's happening in Iran. Some who are financially supported by their families in Iran are in need now. Some may have lost friends or family members. Many can’t even contact their family members to know if they’re safe. There are others who might have traveled home to Iran for Xmas and are now stuck, unable to get a flight back.   Even those who aren't directly impacted are silently carrying an emotional burden. I've spent much of the past week feeling helpless and longing for some way to help or be involved. I miss the city of my birth and feel the suffering of the people there.  If you're reading this and you work with anybody from Iran, be mindful of what they might be going through. Consider giving them space and understanding, extending deadlines, offering tuition relief.... or just a hug. Much love and hope. ❤️
Jan 11
The death toll from mass protests in Iran has risen to 538, according to data compiled by the U.S.-based Human Rights Activists News Agency on Sunday. abcnews.link/BEhhx1s
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8 Aug 2023
Happy to share our teams' work on Private Database Lookups currently in production for enterprise password checks and generally applicable for other lookup features.
Private Data Lookup (PDL) is one of Meta’s latest privacy-enhancing technologies. Learn how it helps improve password security and preserves privacy for people on our family of apps. engineering.fb.com/2023/08/0…
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Payman retweeted
13 Apr 2023
Today, we (@WhatsApp) announced our plans to deploy key transparency, as a way for users to be able to verify each other’s public keys “automatically”. Lots of details go into this, and are described in this blog post here: engineering.fb.com/2023/04/1… 🧵
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13 Apr 2023
Proud of the work done at WA (with my team's help ;)) to be a leader in privacy-by-design at scale. First E2EE backup and now Key Transparency that lets you verify your encryption keys are authentic with little friction: engineering.fb.com/2023/04/1… @_klewi @shiggschili
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30 Mar 2023
Some of our team members went on the Meta Tech podcast to talk about the work our team does at Meta. Leverage privacy enhancing technologies for data minimization at scale.
The Anonymous Credential Service is a recently open-sourced, highly available multitenant service that allows clients to authenticate in a de-identified manner. Tune in to learn from Alex and Haozhi how cryptography makes all of this possible. pca.st/episode/6a95e1cb-a02a…
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Payman retweeted
The Anonymous Credential Service is a recently open-sourced, highly available multitenant service that allows clients to authenticate in a de-identified manner. Tune in to learn from Alex and Haozhi how cryptography makes all of this possible. pca.st/episode/6a95e1cb-a02a…
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9 Jan 2023
What is the state of the art for internet censorship circumvention in both research and practical tools? How much better than the standard VPN services are they?
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Payman retweeted
This will enable anyone to connect through servers set up by volunteers and organizations dedicated to helping people communicate freely. So when a connection to WhatsApp is blocked, people have the power to restore access. blog.whatsapp.com/connecting…

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5 Jan 2023
Really glad to see this happening with WA!
Happy New Year! While many of us celebrated by texting our loved ones on WA, there are millions of people in Iran and elsewhere who continue to be denied the right to communicate freely and privately. So today we’re making it easier for anyone to connect to WA using a proxy.
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13 Dec 2022
The crypto library for our anonymous credential service is open sourced. Take a look, provide feedback and contribute :)
We’ve built a better way for clients to authenticate in a de-identified manner ➡️ Meta has open-sourced Anonymous Credential Service (ACS), a highly available multitenant service. Here's how we developed ACS & how you can use it. #opensource ow.ly/W0zc50M1Ege
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Payman retweeted
We’ve built a better way for clients to authenticate in a de-identified manner ➡️ Meta has open-sourced Anonymous Credential Service (ACS), a highly available multitenant service. Here's how we developed ACS & how you can use it. #opensource ow.ly/W0zc50M1Ege
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Payman retweeted
THANK YOU, SAN FRANCISCO #mahsaamini
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Payman retweeted
7 Jun 2022
When I started doing research in encrypted search 20 years ago, I made a commitment that I would see it through. In 2021 our company Aroki Sys. was acquired by @MongoDB and today I’m excited to announce that we’re releasing encrypted search in MongoDB: mongodb.com/blog/post/mongod…
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