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Mario Savarese

@mariosavarese.com

I do software. https://mariosavarese.com

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Latest posts by Mario Savarese @mariosavarese.com

This is a fun game!

* it has function coloring
* it doesn't have function coloring

16.10.2025 17:51 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Preview
Fra Angelico and the Miracle of Faith Made Visible

The perfect excuse to extend my stay this Christmas <3

09.10.2025 20:09 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

"Humanity is beginning to coexist with a second apex species for the first time in 40,000 years" is off-the-charts delusion

02.10.2025 10:28 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Whatโ€™s worrying here is that the UK government seems absolutely determined to access user private data, no matter the bad press and the consequences. And theyโ€™re now willing to do it overtly. Between this and recent moves against encryption in the EU, weโ€™re going to a bad place.

01.10.2025 13:35 ๐Ÿ‘ 59 ๐Ÿ” 30 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0
An illustration of me, and the headline: "AI agents are coming for your privacy, warns Meredith Whittaker
The Signal Foundationโ€™s president worries they will also blunt competition and undermine cyber-security"

An illustration of me, and the headline: "AI agents are coming for your privacy, warns Meredith Whittaker The Signal Foundationโ€™s president worries they will also blunt competition and undermine cyber-security"

To put it bluntly, the path currently being taken towards agentic AI leads to an elimination of privacy and security at the application layer. It will not be possible for apps like Signalโ€”the messaging app whose foundation I runโ€”to continue to provide strong privacy guarantees, built on robust and openly validated encryption, if device-makers and OS developers insist on puncturing the metaphoric blood-brain barrier between apps and the OS. Feeding your sensitive Signal messages into an undifferentiated data slurry connected to cloud servers in service of their AI-agent aspirations is a dangerous abdication of responsibility.

To put it bluntly, the path currently being taken towards agentic AI leads to an elimination of privacy and security at the application layer. It will not be possible for apps like Signalโ€”the messaging app whose foundation I runโ€”to continue to provide strong privacy guarantees, built on robust and openly validated encryption, if device-makers and OS developers insist on puncturing the metaphoric blood-brain barrier between apps and the OS. Feeding your sensitive Signal messages into an undifferentiated data slurry connected to cloud servers in service of their AI-agent aspirations is a dangerous abdication of responsibility.

Happily, itโ€™s not too late. There is much that can still be done, particularly when it comes to protecting the sanctity of private data. Whatโ€™s needed is a fundamental shift in how we approach the development and deployment of AI agents. First, privacy must be the default, and control must remain in the hands of application developers exercising agency on behalf of their users. Developers need the ability to designate applications as โ€œsensitiveโ€ and mark them as off-limits to agents, at the OS level and otherwise. This cannot be a convoluted workaround buried in settings; it must be a straightforward, well-documented mechanism (similar to Global Privacy Control) that blocks an agent from accessing our data or taking actions within an app.

Second, radical transparency must be the norm. Vague assurances and marketing-speak are no longer acceptable. OS vendors have an obligation to be clear and precise about their architecture and what data their AI agents are accessing, how it is being used and the measures in place to protect it.

Happily, itโ€™s not too late. There is much that can still be done, particularly when it comes to protecting the sanctity of private data. Whatโ€™s needed is a fundamental shift in how we approach the development and deployment of AI agents. First, privacy must be the default, and control must remain in the hands of application developers exercising agency on behalf of their users. Developers need the ability to designate applications as โ€œsensitiveโ€ and mark them as off-limits to agents, at the OS level and otherwise. This cannot be a convoluted workaround buried in settings; it must be a straightforward, well-documented mechanism (similar to Global Privacy Control) that blocks an agent from accessing our data or taking actions within an app. Second, radical transparency must be the norm. Vague assurances and marketing-speak are no longer acceptable. OS vendors have an obligation to be clear and precise about their architecture and what data their AI agents are accessing, how it is being used and the measures in place to protect it.

๐Ÿ“ฃ NEW -- In The Economist, discussing the privacy perils of AI agents and what AI companies and operating systems need to do--NOW--to protect Signal and much else!

www.economist.com/by-invitatio...

09.09.2025 11:44 ๐Ÿ‘ 877 ๐Ÿ” 280 ๐Ÿ’ฌ 12 ๐Ÿ“Œ 31

crate names that go hard dot com

04.09.2025 22:39 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Daniel Hugenroth presenting Secure Messaging at RustConf

Daniel Hugenroth presenting Secure Messaging at RustConf

The coolest gang! Congrats on an great #rustconf talk :-) @lambda.bsky.social @itsibitzi.dev @zekehg.bsky.social

04.09.2025 20:23 ๐Ÿ‘ 5 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

This is the perfect "product" for fragile, insecure men

20.08.2025 22:09 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

In this era of enshittification, I still think Craigslist is a good example that you build for the long term by not chasing *short term* profits which involve squeezing users out of as much value as possible as quickly as possible, rather than building long term value that people like to use.

12.08.2025 18:31 ๐Ÿ‘ 169 ๐Ÿ” 25 ๐Ÿ’ฌ 7 ๐Ÿ“Œ 0

Incredibly proud to have been a part of the team that made this a reality. Congratulations on the launch!

09.06.2025 11:55 ๐Ÿ‘ 8 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Preview
Bracket City The Atlantic covers news, politics, culture, technology, health, and more, through its articles, podcasts, videos, and flagship magazine.

First the Signal revelations, now this? Take my money @theatlantic.com

21.04.2025 14:48 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0