Sean O'Brien
@profdiggity.com
🛡️ Prof Diggity @ivycyber.com 🤖 Founder @yaleprivacylab.org at @yaleisp.bsky.social 🔒 Secure Apps at @privacysafe.social 🔆 Mastodon https://privacysafe.social/@profdiggity 🎙️ Subscribe 👉 @bitsontape.com
Pinned
Sean O'Brien
@profdiggity.com
· 23d
PrivacySafe — Private Chat, Calls & Storage.
Have truly private conversations in a safe and simple chat app. Make secure peer-to-peer video and voice calls on any platform. Save and share your files with the peace of mind that you hold the keys.
privacysafe.app
🏰 We're growing not only our @privacysafe.social community but also our app downloads and subscriptions to our zero-knowledge storage service.
✌️ Try it yourself on #Windows, #Mac, and #Linux at privacysafe.app
✌️ Try it yourself on #Windows, #Mac, and #Linux at privacysafe.app
At the local gym every day except when I've been traveling... Not taking two steps back tomorrow is the REAL challenge #Thanksgiving
November 26, 2025 at 9:41 PM
At the local gym every day except when I've been traveling... Not taking two steps back tomorrow is the REAL challenge #Thanksgiving
Last night, I had an excellent two-hour conversation with Laurin Weissinger laurinw.com about @privacysafe.social and we dug through the apps screen-by-screen. Stay tuned 📺
November 25, 2025 at 7:38 PM
Last night, I had an excellent two-hour conversation with Laurin Weissinger laurinw.com about @privacysafe.social and we dug through the apps screen-by-screen. Stay tuned 📺
Reposted by Sean O'Brien
🙏 It's an honor to have @johnkiriakou.bsky.social on privacysafe.social and that speaks *volumes* for the work our trustworthy & tireless team has accomplished! Thank you, sir 🫡
Join John on a better #social space 👉 psafe.ly/social
Join John on a better #social space 👉 psafe.ly/social
November 25, 2025 at 7:11 PM
🙏 It's an honor to have @johnkiriakou.bsky.social on privacysafe.social and that speaks *volumes* for the work our trustworthy & tireless team has accomplished! Thank you, sir 🫡
Join John on a better #social space 👉 psafe.ly/social
Join John on a better #social space 👉 psafe.ly/social
Reposted by Sean O'Brien
My next surveillance detection course starts Jan 4. It has eight modules of content and three live sessions with me and @profdiggity.com
Ask me questions and get access to content you won't find anywhere else.
ivycyber.com/kiriakou
Ask me questions and get access to content you won't find anywhere else.
ivycyber.com/kiriakou
Masterclass: Surveillance & Torture
Join former CIA officer John Kiriakou for an 8-week online program and protect yourself in cyberspace and your neighborhood.
ivycyber.com
November 25, 2025 at 7:09 PM
My next surveillance detection course starts Jan 4. It has eight modules of content and three live sessions with me and @profdiggity.com
Ask me questions and get access to content you won't find anywhere else.
ivycyber.com/kiriakou
Ask me questions and get access to content you won't find anywhere else.
ivycyber.com/kiriakou
We launched privacysafe.social over a year ago, but kept it exclusive with "friends & family" until August at Hackers on Planet Earth (HOPE) conference in #NYC
In the past 3 months PrivacySafe #social userbase grew 413% and active users grew by 519%
Now that's what I call parabolic! 📈
In the past 3 months PrivacySafe #social userbase grew 413% and active users grew by 519%
Now that's what I call parabolic! 📈
November 24, 2025 at 2:55 AM
We launched privacysafe.social over a year ago, but kept it exclusive with "friends & family" until August at Hackers on Planet Earth (HOPE) conference in #NYC
In the past 3 months PrivacySafe #social userbase grew 413% and active users grew by 519%
Now that's what I call parabolic! 📈
In the past 3 months PrivacySafe #social userbase grew 413% and active users grew by 519%
Now that's what I call parabolic! 📈
Reposted by Sean O'Brien
November 24, 2025 at 2:53 AM
🤠 Looong day but here's a fun sneak peek - Potato quality vid of handwriting pen input on a @privacysafe.social tablet, in our #E2EE apps.
Sign up & download at privacysafe.app
Sign up & download at privacysafe.app
November 23, 2025 at 8:55 PM
🤠 Looong day but here's a fun sneak peek - Potato quality vid of handwriting pen input on a @privacysafe.social tablet, in our #E2EE apps.
Sign up & download at privacysafe.app
Sign up & download at privacysafe.app
Thanks to @mikaelthalen.bsky.social for digging into the insecurity & #enshittification of #Google Nest devices. This is why #RightToRepair and #FreeSoftware matters.
November 22, 2025 at 7:51 AM
Thanks to @mikaelthalen.bsky.social for digging into the insecurity & #enshittification of #Google Nest devices. This is why #RightToRepair and #FreeSoftware matters.
Reposted by Sean O'Brien
Our @profdiggity.com on #Google Nest #privacy:
"Proximity signals alone can reveal when someone is home, when they leave and when they sleep... Over time, you get a very clear picture of household routine.”
by @mikaelthalen.bsky.social
san.com/cc/google-is...
"Proximity signals alone can reveal when someone is home, when they leave and when they sleep... Over time, you get a very clear picture of household routine.”
by @mikaelthalen.bsky.social
san.com/cc/google-is...
Google is still collecting data from your old Nest thermostat.
A security researcher discovered that Google is still collecting data from discontinued Nest thermostat models in millions of American homes.
san.com
November 22, 2025 at 7:45 AM
Our @profdiggity.com on #Google Nest #privacy:
"Proximity signals alone can reveal when someone is home, when they leave and when they sleep... Over time, you get a very clear picture of household routine.”
by @mikaelthalen.bsky.social
san.com/cc/google-is...
"Proximity signals alone can reveal when someone is home, when they leave and when they sleep... Over time, you get a very clear picture of household routine.”
by @mikaelthalen.bsky.social
san.com/cc/google-is...
I've been contacted by people looking for EB-1 visa recommendations who I don't know, in the past. But today is the first time I had someone show me a fraudulent letter to @uscisgov.bsky.social purchased from a freelance service. Any other US academics dealing with this?
November 22, 2025 at 5:59 AM
I've been contacted by people looking for EB-1 visa recommendations who I don't know, in the past. But today is the first time I had someone show me a fraudulent letter to @uscisgov.bsky.social purchased from a freelance service. Any other US academics dealing with this?
This week I guest lectured for the fourth time for Sheree Ip's class at Curtin University #Law 🤓
We walked through the #TornadoCash smart contract, discussing its ability to protect #privacy of transactions.
What's your take? Should #crypto mixers like Tornado Cash and #SamouraiWallet be banned?
We walked through the #TornadoCash smart contract, discussing its ability to protect #privacy of transactions.
What's your take? Should #crypto mixers like Tornado Cash and #SamouraiWallet be banned?
November 22, 2025 at 5:52 AM
This week I guest lectured for the fourth time for Sheree Ip's class at Curtin University #Law 🤓
We walked through the #TornadoCash smart contract, discussing its ability to protect #privacy of transactions.
What's your take? Should #crypto mixers like Tornado Cash and #SamouraiWallet be banned?
We walked through the #TornadoCash smart contract, discussing its ability to protect #privacy of transactions.
What's your take? Should #crypto mixers like Tornado Cash and #SamouraiWallet be banned?
📺 Watch our Bay Path University #Cybersecurity Summit! We had a packed room & 100+ attendees. I spoke about #TikTok data & #privacy issues and demo'd a #smartphone side channel attack 👻
Our guest speaker was @scottjshapiro.bsky.social of @yalelawschool-yls.bsky.social👇
vimeo.com/1139078347/8...
Our guest speaker was @scottjshapiro.bsky.social of @yalelawschool-yls.bsky.social👇
vimeo.com/1139078347/8...
Bay Path University Cybersecurity summit 2025
Professors Scott J. Shapiro & Sean O’Brien discuss AI, Innovation, and the Future of Security at Bay Path's 13th annual Cybersecurity summit.
vimeo.com
November 22, 2025 at 2:23 AM
📺 Watch our Bay Path University #Cybersecurity Summit! We had a packed room & 100+ attendees. I spoke about #TikTok data & #privacy issues and demo'd a #smartphone side channel attack 👻
Our guest speaker was @scottjshapiro.bsky.social of @yalelawschool-yls.bsky.social👇
vimeo.com/1139078347/8...
Our guest speaker was @scottjshapiro.bsky.social of @yalelawschool-yls.bsky.social👇
vimeo.com/1139078347/8...
Reposted by Sean O'Brien
I am thrilled to share the news that I joined the @mastodon.mastodon.social.ap.brid.gy leadership team as Community Director alongside Felix Hlatky, our new Executive Director, and Renaud Chaput, our Technical Director.
blog.joinmastodon.org/2025/11/the-...
blog.joinmastodon.org/2025/11/the-...
The Future is Ours to Build - Together
We’re pleased to introduce Mastodon’s new leadership team, and to share some other important updates.
blog.joinmastodon.org
November 18, 2025 at 9:21 AM
I am thrilled to share the news that I joined the @mastodon.mastodon.social.ap.brid.gy leadership team as Community Director alongside Felix Hlatky, our new Executive Director, and Renaud Chaput, our Technical Director.
blog.joinmastodon.org/2025/11/the-...
blog.joinmastodon.org/2025/11/the-...
Now's a good time to remind everyone they can join us on #Mastodon at privacysafe.social 😊 by @privacysafe.social We've done some customizations that make the browser app more #Bluesky or Twitter-like and are running a version with the latest features like quoted replies etc.
PrivacySafe Social
Your Stylish Replacement for Twitter X. No Ads, No Spyware, No Manipulation.
privacysafe.social
November 18, 2025 at 1:14 PM
Now's a good time to remind everyone they can join us on #Mastodon at privacysafe.social 😊 by @privacysafe.social We've done some customizations that make the browser app more #Bluesky or Twitter-like and are running a version with the latest features like quoted replies etc.
There was a *lot* of schadenfreude going around #Twitter X earlier this month about #cloudcomputing outages. I guess what goes around comes around. Where's the #failwhale when you need it... 🐳
November 18, 2025 at 1:11 PM
There was a *lot* of schadenfreude going around #Twitter X earlier this month about #cloudcomputing outages. I guess what goes around comes around. Where's the #failwhale when you need it... 🐳
🤓 Do you use StickTock.com to view #TikTok videos without #surveillance?
Want to see #StickTock funded and sustainable?
Let us know!
cc @pluralistic.net.web.brid.gy
Want to see #StickTock funded and sustainable?
Let us know!
cc @pluralistic.net.web.brid.gy
November 17, 2025 at 9:37 PM
🤓 Do you use StickTock.com to view #TikTok videos without #surveillance?
Want to see #StickTock funded and sustainable?
Let us know!
cc @pluralistic.net.web.brid.gy
Want to see #StickTock funded and sustainable?
Let us know!
cc @pluralistic.net.web.brid.gy
TODAY starting 9AM ET - Join us at Bay Path University via the live broadcast of our annual #cybersecurity conference!
psafe.ly/W9mqbM
I'll be presenting about #TikTok data flows and running a malware app demo, and @scottjshapiro.bsky.social is our keynote :D
psafe.ly/W9mqbM
I'll be presenting about #TikTok data flows and running a malware app demo, and @scottjshapiro.bsky.social is our keynote :D
Cyber Pathways 2025: AI, Innovation, and the Future of Security
Join Bay Path University for Cyber Pathways 2025, a forward-thinking summit exploring how artificial intelligence (AI) is transforming the landscape of cybersecurity, digital defense, education, and w...
psafe.ly
November 14, 2025 at 11:12 AM
TODAY starting 9AM ET - Join us at Bay Path University via the live broadcast of our annual #cybersecurity conference!
psafe.ly/W9mqbM
I'll be presenting about #TikTok data flows and running a malware app demo, and @scottjshapiro.bsky.social is our keynote :D
psafe.ly/W9mqbM
I'll be presenting about #TikTok data flows and running a malware app demo, and @scottjshapiro.bsky.social is our keynote :D
🍿📽️ Take some time out of your day to watch the @seagl.org talks! I'm watching Brady Dibble of @rockylinux.org talking about SBOMs & #security in #freesoftware projects. pretalx.seagl.org/2025/talk/HM...
👇 #linux #gnulinux #foss #opensource
www.youtube.com/watch?v=hxO3...
👇 #linux #gnulinux #foss #opensource
www.youtube.com/watch?v=hxO3...
No More Mystery Brownies: SBOMs, security errata, and the recipe for safer software SeaGL 2025
Open source software can be like a plate of mystery brownies in the breakroom: Where did they come from? Are they safe? Do they have gluten? SBOMs are your ingredient list for software, greatly reduci...
pretalx.seagl.org
November 9, 2025 at 1:09 AM
🍿📽️ Take some time out of your day to watch the @seagl.org talks! I'm watching Brady Dibble of @rockylinux.org talking about SBOMs & #security in #freesoftware projects. pretalx.seagl.org/2025/talk/HM...
👇 #linux #gnulinux #foss #opensource
www.youtube.com/watch?v=hxO3...
👇 #linux #gnulinux #foss #opensource
www.youtube.com/watch?v=hxO3...
Reposted by Sean O'Brien
This past week I interviewed Keith McHenry, co-founder of #FoodNotBombs! - begun in 1980 in Cambridge, Massachusetts, offering free #vegan food to anyone, as a protest against war and poverty. The genius idea caught hold with autonomous chapters in 60 countries.
www.youtube.com/watch?v=ZFPz...
www.youtube.com/watch?v=ZFPz...
Direct Action - Food Not Bombs! with Keith McHenry | DEEP FOCUS with John Kiriakou
YouTube video by Deep Focus with John Kiriakou
www.youtube.com
November 8, 2025 at 7:54 PM
This past week I interviewed Keith McHenry, co-founder of #FoodNotBombs! - begun in 1980 in Cambridge, Massachusetts, offering free #vegan food to anyone, as a protest against war and poverty. The genius idea caught hold with autonomous chapters in 60 countries.
www.youtube.com/watch?v=ZFPz...
www.youtube.com/watch?v=ZFPz...
Flying up the charts! We're coming for you #NYC 😉
👋 We're welcoming more users to privacysafe.social than ever! Join our growing community and the millions of users on the #federated + #decentralized #social web
November 6, 2025 at 12:13 PM
Flying up the charts! We're coming for you #NYC 😉
Reposted by Sean O'Brien
🔥 Yet another amazing #development meeting with our team. The screen you see here is privacysafe.app group chat & screenshare across 4 countries and 3 continents. Try it today for a more #secure tomorrow! #FreeSoftware #OpenSource #E2EE
November 6, 2025 at 2:34 AM
🔥 Yet another amazing #development meeting with our team. The screen you see here is privacysafe.app group chat & screenshare across 4 countries and 3 continents. Try it today for a more #secure tomorrow! #FreeSoftware #OpenSource #E2EE
🚀 Exciting times ahead! Join us at Bay Path University for Cyber Pathways 2025: AI, Innovation, and the Future of Security - our annual #cybersecurity conference, live in-person & online.
🗓️ Fri Nov 14, 2025 | 🕙 8:30 AM – 12 PM EST
📍Longmeadow, MA & Virtual
👇Signup link in comments
🗓️ Fri Nov 14, 2025 | 🕙 8:30 AM – 12 PM EST
📍Longmeadow, MA & Virtual
👇Signup link in comments
November 4, 2025 at 4:15 PM
🚀 Exciting times ahead! Join us at Bay Path University for Cyber Pathways 2025: AI, Innovation, and the Future of Security - our annual #cybersecurity conference, live in-person & online.
🗓️ Fri Nov 14, 2025 | 🕙 8:30 AM – 12 PM EST
📍Longmeadow, MA & Virtual
👇Signup link in comments
🗓️ Fri Nov 14, 2025 | 🕙 8:30 AM – 12 PM EST
📍Longmeadow, MA & Virtual
👇Signup link in comments
🏰 We're growing not only our @privacysafe.social community but also our app downloads and subscriptions to our zero-knowledge storage service.
✌️ Try it yourself on #Windows, #Mac, and #Linux at privacysafe.app
✌️ Try it yourself on #Windows, #Mac, and #Linux at privacysafe.app
PrivacySafe — Private Chat, Calls & Storage.
Have truly private conversations in a safe and simple chat app. Make secure peer-to-peer video and voice calls on any platform. Save and share your files with the peace of mind that you hold the keys.
privacysafe.app
November 3, 2025 at 9:49 PM
🏰 We're growing not only our @privacysafe.social community but also our app downloads and subscriptions to our zero-knowledge storage service.
✌️ Try it yourself on #Windows, #Mac, and #Linux at privacysafe.app
✌️ Try it yourself on #Windows, #Mac, and #Linux at privacysafe.app
A bunch of great people are offering help and vendors + hosts are (mostly) responsive to abuse reports for these #botnets. I'm still being targeted in the most personal way #Aisuru operators can. Most of that I'll talk about soon. Thanks esp. to @briankrebs.infosec.exchange.ap.brid.gy
November 3, 2025 at 9:40 PM
A bunch of great people are offering help and vendors + hosts are (mostly) responsive to abuse reports for these #botnets. I'm still being targeted in the most personal way #Aisuru operators can. Most of that I'll talk about soon. Thanks esp. to @briankrebs.infosec.exchange.ap.brid.gy