Meredith Whittaker

We love to see it--community-created harm reduction infrastructure in the face of the alarming integration of AI agents into the Windows operating system (which is currently the most reckless deployment environment) <3
https://github.com/zoicware/RemoveWindowsAI
https://s3.eu-central-2.wasabisys.com/mastodonworld/media_attachments/files/115/883/606/237/930/231/original/6b18986674f812bf.png

2026-01-07 14:09:30 UTC

📣 NEW w/@udbhav-tiwari.bsky.social Mapping the technical reality & privacy/security perils of pushing AI agents into our infra
We offer palliatives, but the core issues are paradigmatic: 'agency' relies on pervasive data access + ability to act w/o explicit consent.
https://www.youtube.com/watch?v=0ANECpNdt-4

2025-12-25 14:14:42 UTC

Merry Christmas! May you enjoy the cinnamon nutmeg season as much as I do, with all the peace, major chord progressions, warm drinks, butterfat and sparkling this and that, whatever you believe, however work it ❤️🎄
🎁 here's a great album to get your day going https://www.youtube.com/results?search_query=oscar+peterson+live+in+tokyo+1862

2025-11-13 17:38:22 UTC

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@nprofile…t9xc Eastern. Daylight. Time.

2025-10-27 11:58:37 UTC

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@nprofile…tp37 No, because no modern and useful comms platform provides only text messaging. And if your platform doesn't provide normative features and functionality, people won't use it. And if they don't use it--even if you do--you can't use it either. The network effect rules communications effectiveness.

2025-10-27 10:42:04 UTC

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To conclude: my silver lining hope is that AWS going down can be a learning moment, in which the risks of concentrating the nervous system of our world in the hands of a few players become very clear. And that this can help us craft ways of undoing this concentration and creating real choice ❤️ 13/

2025-10-27 10:41:55 UTC

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So, Signal does what we can to provide a service w integrity in the concentrated ecosystem we're working in. We protect your comms w end-to-end encryption, so that we can use AWS and others as a highway across which to send Signal data in ways that don’t let AWS, or anyone else, gain access. 12/

2025-10-27 10:41:46 UTC

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In short, the problem here is not that Signal ‘chose’ to run on AWS. The problem is the concentration of power in the infrastructure space that means there isn’t really another choice: the entire stack, practically speaking, is owned by 3-4 players. 11/

2025-10-27 10:41:37 UTC

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o, yes, Signal runs on AWS. It also runs on your phone, which runs on iOS (Apple) or Android (Google). And on Dekstop, via Windows (Microsoft). Each of these presents similar dependencies on large entrenched tech companies, and concomitant barriers and risks. 10/

2025-10-27 10:41:29 UTC

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But even if Signal had the billions needed to recreate AWS, it’s not just about money. The talent to run these systems is rare & concentrated. The expertise, the tooling, the playbooks, the very language of modern SRE came out of these hyperscalers, and is now synonymous with 'the cloud.' 9/

2025-10-27 10:41:21 UTC

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Meaning that infrastructure like AWS is not something that Signal, or almost anyone else, could afford to just “spin up.” Which is why nearly everyone that manages a real-time service–from Signal, to X, to Palantir, to Mastodon–rely at least in part on services provisioned by these companies. 8/

2025-10-27 10:41:13 UTC

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Such infrastructure costs billions and billions of dollars to provision and maintain, and it’s highly depreciable. In the case of the hyperscalers, the staggering cost is cross-subsidized by other businesses–themselves also massive platforms with significant lockin. 7/

2025-10-27 10:41:02 UTC

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This isn't ‘'renting a server.' It's leasing access to a whole sprawling, capital-intensive, technically-capable system that must be just as available in Cairo as in Capetown, just as functional in Bangkok as Berlin. Particularly given the high stakes use cases of many who rely on Signal. 6/

2025-10-27 10:40:52 UTC

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Instant messaging demands near-zero latency. Voice and video in particular require complex global signaling & regional relays to manage jitter and packet loss. These are things that AWS, Azure, and GCP provide at global scale that, practically speaking, others (in the western context) don’t. 5/

2025-10-27 10:40:43 UTC

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Running a low-latency platform for instant comms capable of carrying millions of concurrent audio/video calls requires a pre-built, planet-spanning network of compute, storage and edge presence that requires constant maintenance, significant electricity and persistent attention and monitoring. 4/

2025-10-27 10:40:29 UTC

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The question isn’t "why does Signal use AWS?" It’s to look at the infrastructural requirements of any global, real-time, mass comms platform and ask how it is that we got to a place where there’s no realistic alternative to AWS and the other hyperscalers. 3/

2025-10-27 10:40:18 UTC

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Concerning, bc it indicates that the extent of the concentration of power in the hands of a few hyperscalers is way less widely understood than I’d assumed. Which bodes poorly for our ability to craft reality-based strategies capable of contesting this concentration & solving the real problem. 2/

2025-10-27 10:40:08 UTC

📣THREAD: It’s surprising to me that so many people were surprised to learn that Signal runs partly on AWS (something we can do because we use encryption to make sure no one but you–not AWS, not Signal, not anyone–can access your comms).
It’s also concerning. 1/

2025-10-20 08:18:37 UTC

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@nprofile…px4k No

2025-10-20 08:18:19 UTC

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@nprofile…79fx what are you suggesting we decentralize here? Like, walk me through how 'decentralizing' would solve the fact that AWS and two other cos control a large portion of server infra globally.

2025-10-20 08:00:15 UTC

PSA: we're aware that Signal is down for some people. This appears to be related to a major AWS outage. Stand by.

2025-10-16 14:53:01 UTC

LOL all morning picturing some finance quant slouched at his desk prompting Dalle, like, "make me a picture of pikachu having sex with the Apple logo" or whatever tf those guys use these things for, then throwing up his hands like "WHY WON'T THIS FIND ALPHA?!"
https://www.bloomberg.com/news/articles/2025-10-15/ken-griffin-says-genai-fails-to-help-hedge-funds-produce-alpha
https://s3.eu-central-2.wasabisys.com/mastodonworld/media_attachments/files/115/384/407/937/692/325/original/42b667a09508e273.png

2025-10-09 11:43:51 UTC

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So we remain vigilant & deeply grateful to our allies.
For Signal, Chat Control is an existential threat. If we were *forced* to choose between building surveillance into our services or keeping our integrity, we would choose integrity & leave the market. We hope it never comes to this. 7/

2025-10-09 11:43:41 UTC

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The technical consensus is clear: you can't create a backdoor that only lets the "good guys" in. However they're dressed up, these proposals create cybersecurity loopholes that hackers and hostile nations are eagerly waiting to exploit. 6/

2025-10-09 11:43:31 UTC

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The reality is that scanning any content before it is encrypted negates the very purpose of encryption and is a dangerous backdoor. No amount of tinkering or word games can change that inescapable reality. 5/

2025-10-09 11:43:22 UTC

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We must be wary of "new" proposals that allow scanning of "known content" while claiming to protect privacy by proscribing "indiscriminate" surveillance. We must also look out for those that mandate only scanning for “hashed images or videos.” 4/

2025-10-09 11:43:13 UTC

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The war is not over, however. Now we move to the European Council, where the issue is unresolved. We expect closed-door negotiations to engage in rhetorical arbitrage--claiming to support privacy by using word games and bespoke definitions--while in practice undermining it. Tedious and dangerous 3/

2025-10-09 11:42:57 UTC

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Defending privacy isn't easy. Those in power always want more access +more info. It's especially hard when emotionally charged args are used to advance surveillance
❤️ to those doing the work!
https://social.bau-ha.us/@CCC
https://d-64.social/@d64eV
https://mastodon.social/@chatcontrol
And many others <3 2/

2025-10-09 11:42:00 UTC

We're so relieved to see Germany reaffirm its opposition to the dangerous Chat Control proposal--the one that would mandate mass scanning of communications.
Germany's long been a solid champion of privacy, and the news that it was considering backing mass surveillance was alarming. 1/

2025-10-06 07:12:01 UTC

📣 Germany's close to reversing its opposition to mass surveillance & private message scanning, & backing the Chat Control bill. This could end private comms-& Signal-in the EU.
Time's short and they're counting on obscurity: please let German politicians know how horrifying their reversal would be.
https://s3.eu-central-2.wasabisys.com/mastodonworld/media_attachments/files/115/325/969/160/391/750/original/2c653bbe34e65965.png
https://s3.eu-central-2.wasabisys.com/mastodonworld/media_attachments/files/115/325/969/172/169/700/original/e041bcfcab8a52c7.png

2025-08-11 16:00:21 UTC

New Sunday Times profile in which I succeed, like a fencer in a 2hr marathon match, in fending off Qs abt my personal life & consistently turning focus back to my work & ideas.
(Contra the interviewer's claim, many ppl do know me! They're called friends, & you know who you are ❤️)
https://archive.is/BtZD0
https://s3.eu-central-2.wasabisys.com/mastodonworld/media_attachments/files/115/010/961/492/550/501/original/6b4b655169714bc5.png

2025-07-30 13:57:22 UTC

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@nprofile…q54u <3

2025-07-11 17:44:02 UTC

Yes, I did sound the alarm on agentic AI's privacy threat, and rightly so.
https://observer.com/2025/07/signal-meredith-whittaker-agentic-ai-risk/

2025-07-02 11:09:01 UTC

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@nprofile…yw6w Nope :)

2025-07-02 10:59:39 UTC

So happy to be joining Burda Media's board of directors! I love a steep learning curve, and this one--schooling up on media business models & opportunities to (re)shape media's relationship to tech--couldn't be more exciting & consequential. Thrilled to contribute ❤️
https://www.burda.com/en/news/meredith-whittaker-joins-burdas-board-directors/

2025-07-01 14:36:10 UTC

How to be classy, how to be cute, how to actually walk the walk...
Love you for this @nprofile…gcyh ❤️
www.nytimes.com/2025/07/01/t...

2025-06-30 13:00:26 UTC

A big humble thank you to @nprofile…urge and @nprofile…rckn for featuring Signal and me in your roundup of 2025’s most influential companies. An honor to serve alongside an incredible group of people backed by a rad movement ❤️
https://time.com/collections/time100-companies-2025/7289620/signal/

2025-06-19 08:06:20 UTC

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Source: https://www.theguardian.com/technology/2025/jun/18/whatsapp-ai-helper-mistakenly-shares-users-number

2025-06-19 08:01:02 UTC

'Meredith,' some guys ask, 'why won't you shove AI into Signal?'
Because we love privacy, and we love you, and this shit is predictable and unacceptable. Use Signal ❤️
https://s3.eu-central-2.wasabisys.com/mastodonworld/media_attachments/files/114/708/972/829/166/537/original/16c1b7d0b90a66fe.png

2025-06-16 15:28:59 UTC

Use Signal. We promise, no AI clutter, and no surveillance ads, whatever the rest of the industry does. <3
https://s3.eu-central-2.wasabisys.com/mastodonworld/media_attachments/files/114/693/745/217/544/725/original/7dbefe76d0d3e3e2.png

2025-06-03 13:52:32 UTC

Happy pride month! Especially to my trans friends <3

2025-05-28 09:39:26 UTC

📣 Tomorrow, Sat May 29, Nuits sonores, Lyon France!
I'm coming dance, I'm coming to party, I'm coming to eat, but first I'm sitting down to talk about tech, privacy, Signal, and what it takes to make a world worth living in <3
https://s3.eu-central-2.wasabisys.com/mastodonworld/media_attachments/files/114/584/788/032/698/666/original/ff0b4bb1a2fa5432.png
https://s3.eu-central-2.wasabisys.com/mastodonworld/media_attachments/files/114/584/788/660/729/218/original/9ff16c8141660d5f.png

2025-05-21 17:00:05 UTC

📣 The rushed integration of AI into everything is a major threat to privacy, as we've been saying.
Microsoft Recall is a great (not great!) example of exactly why--it screenshots everything on your desktop, to give AI the data to tell you...what you were doing on desktop.
So, Signal took steps to protect you and everyone using Signal on Windows 11 from Recall's hunger for (Signal) data.
Read more about how we navigated, and why we need to ecosystem to a lot more 👇
https://signal.org/blog/signal-doesnt-recall/

2025-03-09 14:03:28 UTC

I did. Because it does.
https://techcrunch.com/2025/03/07/signal-president-meredith-whittaker-calls-out-agentic-ai-as-having-profound-security-and-privacy-issues/

2025-02-18 12:48:37 UTC

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@nprofile…5ypw We're loud when there's talk of breaking encryption and undermining the robust privacy guarantees that those who rely on Signal require. We've been more than clear on our position there.

2025-02-07 07:01:50 UTC

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@nprofile…54t9 WA would need to meet our v high privacy/security bar

2025-01-16 19:29:56 UTC

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@nprofile…p9x3 Also interested in the answer to this question

2025-01-14 11:28:22 UTC

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@nprofile…dy2x This is excellent, and so clearly written. Thank you!!
It harmonizes well, in much plainer language, with this which I recently coauthored, looking at these and other vulnerabilities in the context of the rush to integrate large models in defense: https://arxiv.org/abs/2410.14831

2025-01-11 17:16:43 UTC

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@nprofile…30mk @nprofile…z9x7 I'll be publishing the text with a bibliography soon (when I finish cleaning up the document)

2025-01-09 16:57:32 UTC

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@nprofile…p4mx Basically, I'm calling for this https://www.wired.com/story/the-beginning-of-the-end-of-big-tech/

2025-01-09 14:13:46 UTC

Not lost on me that it's nonprofit tech, https://app.watchduty.org, showing up & actually working in the midst of the LA fires (donate to them!)
Meanwhile platforms fail to surface key news, vital info is paywalled...
As I've been saying, we need a new tech paradigm, yesterday!

2025-01-08 17:22:27 UTC

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@nprofile…tppj @nprofile…z9x7 I am still working on cleaning it up and getting the bibliography in order, but should be out in the next few weeks, published in partnership with CCC. I'll post when it's out there!

2025-01-08 17:18:27 UTC

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@nprofile…tyen @nprofile…z9x7 thanks for being there!

2025-01-06 23:40:56 UTC

This is desperate product manager trying to ship something to meet a company OKR they don't understand and don't believe in coded
https://www.404media.co/instagram-begins-randomly-showing-users-ai-generated-images-of-themselves/

2025-01-06 10:39:41 UTC

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@nprofile…grd5 this is really beautiful. Thank you for taking the time to write it!

2025-01-03 14:03:50 UTC

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@nprofile…hz37 Why do you assume this?

2025-01-01 10:06:12 UTC

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@nprofile…veew Thank you for engaging and extending the thread of analysis!

2024-12-30 11:14:30 UTC

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@nprofile…c0hp Looks like the recording is up. The answer to when the text will be published depends on when I find the time to do a close edit, add in the bibliography, format it, and talk with my CCC friends about where and how to distro. But I'd like it to be soon!
https://media.ccc.de/v/38c3-feelings-are-facts-love-privacy-and-the-politics-of-intellectual-shame

2024-12-26 20:51:09 UTC

Complete knowledge of the full majesty of universal creation in all its divine facets is when I own an island.
https://s3.eu-central-2.wasabisys.com/mastodonworld/media_attachments/files/113/721/096/469/456/728/original/d4cc15f4c54f9256.png

2024-12-25 10:42:48 UTC

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@nprofile…grd5 Oh wow I really want to see this :)

2024-12-24 17:25:08 UTC

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@nprofile…l4wy LAYERS

2024-12-24 15:16:14 UTC

Sitting at the dining table, busy condensing 60 pages of unruly notes into 15 pages of more or less coherent text for my upcoming talk at @nprofile…tgsu.
Every so often I glance up from my computer on this, Christmas Eve, and catch the eye of a family member whose suspicious gaze lets me know that they still don't quite believe that there is in fact a real conference, attended by real people like me, scheduled on Dec 27th.

2024-12-17 15:33:59 UTC

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@nprofile…g3e9 The fix to this has been rolled out. As before, really sorry you (and others) encountered this bug. To resolve the issue, please update to latest Android version of Signal (7.27.1).

2024-12-02 14:24:58 UTC

📢NEW: 'Open' AI systems aren't open. The vague term, combined w AI hype is (mis)shaping policy & practice, assuming 'open source' AI democratizes access & addresses power concentration. It doesn't.
@sarahbmyers, @davidthewid & I correct the record👇
https://nature.com/articles/s41586-024-08141-1
https://s3.eu-central-2.wasabisys.com/mastodonworld/media_attachments/files/113/583/684/033/681/847/original/b8bb78ce5bbee024.png

2024-11-27 20:54:22 UTC

I wrote a little end of year manifestation for you'all. MAY IT EVER BE THUS!
https://www.wired.com/story/the-beginning-of-the-end-of-big-tech/

2024-11-25 10:51:40 UTC

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@nprofile…4w3e Mainly, I think, because no one picks up their messenger in order to use a messenger. They pick it up to talk to their friends, which is much more important. And if your friends aren't there, you'll go where they are. I.e. the network effect is powerful.

2024-11-24 10:11:40 UTC

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@nprofile…m2w9 we don't have an in-call chat currently, but it's a feature we're actively looking at. In the meantime, you can send chats to the people in the calls individually, or create a group to send chats there.

2024-11-18 13:24:48 UTC

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@nprofile…z9sw There will be :)

2024-11-18 12:38:51 UTC

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@nprofile…t8jm using Signal is free <3

2024-11-18 10:02:45 UTC

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@nprofile…nzaf No, but I like it better in CCC, as I think it's central to all of the discussions not simply engaging on ethics/society/politics. Also, I'm not that fussy about taxonomies (all are broken, some are useful, etc)

2024-11-18 09:06:37 UTC

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@nprofile…2ghg @nprofile…35a5 🙏

2024-11-18 08:44:24 UTC

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@nprofile…35a5 I believe it will be recorded, but the CCC folks can confirm. I believe this because I have regularly gone back and watched old CCC talks. However, I don't know their heuristic for recording and publishing.

2024-11-18 08:30:11 UTC

Anyone spending the brief liminal window between Christmas and Georgian new year in Hamburg, with the hackers, at CCC?
I am! And I'll be presenting new research and a new talk ☺️
halfnarp.events.ccc.de
https://s3.eu-central-2.wasabisys.com/mastodonworld/media_attachments/files/113/503/016/630/082/837/original/1d88f0043a155bca.png

2024-11-17 12:36:11 UTC

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@nprofile…nkff @nprofile…c5h6 efficiency doesn't (generally) lead to a reduction in scale. In fact, often the opposite. See: Jevons paradox. See: Alexnet and the transformers architecture (and many others) presented massive efficiency gains--gains that were then leveraged to build bigger than previously possible, not to reduce and/or maintain scale.
We talk about this in the paper.

2024-11-17 12:30:48 UTC

Now that "scale is all we need" has predictably faltered...
1. Small AI models often perform better in context.
2. Obsession w bigness has bad consequences, from climate, to power concentration, to research capture.
Me +
@nprofile…c5h6
@sashaluccioni
arxiv.org/abs/2409.14160

2024-11-16 15:06:33 UTC

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@nprofile…z7vf @nprofile…2wc8 I like the new one better, but I hear your view. I hope you get used to it over time :)

2024-11-12 20:55:32 UTC

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@npub1a2e…9xzw I don't understand the question.

2024-11-12 10:50:23 UTC

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@npub1xef…c4h0 They need to have a Signal account and the app installed, yes.

2024-11-07 18:45:34 UTC

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@npub15tu…f3fg Hey, thanks <3

2024-10-30 14:07:03 UTC

Apparently there's an imposter pretending to be me and messaging infosec and infosec-adjacent folks cold on Signal (or, at least these are the people reporting it).
So, for the record I will NEVER cold message people on Signal. If you don't know me, or we didn't connect explicitly via a contact or at an event, I will not reach out to you. Ever. I have, like, better things to do, for one...

2024-10-21 14:07:48 UTC

I spent an extremely enjoyable hour with Kara, looking back at the wild landscape of my last two decades in tech, and discussing just how different what's next for tech has got to be, for all our sakes❤️👇
https://megaphone.link/VMP1340571392

2024-10-06 17:22:57 UTC

Case in point: there's no way to build a backdoor that only the "good guys" can use.
When the entire technical community says that the EU's ChatControl legislation + similar pose serious cybersecurity threats, we're not exaggerating for effect.
https://www.wsj.com/tech/cybersecurity/u-s-wiretap-systems-targeted-in-china-linked-hack-327fc63b?st=byoB7m

2024-09-28 09:07:42 UTC

I loved talking to
@madhumita29
for Lunch with the FT! We spoke on my personal journey through the enchanted forest of 2000s era-tech, why we must connect AI + surveillance, and the nascent rumblings of a better tech future that I see on the horizon.
Come for that, stay for the portrait perfectly capturing "just off a redeye and powering through it" ♥️👇
https://ft.com/content/799b4fcf-2cf7-41d2-81b4-10d9ecdd83f6

2024-09-25 07:48:52 UTC

📣NEW paper! Don’t believe the hype: bigger AI ≠ better AI. @SashaMTL, @GaelVaroquaux and me on how the race to bigger, and bigger AI has bad consequences and isn't necessary.
1. Smaller AI models often perform better than big models in context
And
2. obsession with bigness has severe collateral consequences, from climate costs, to concentrated power, to more surveillance, to the capture of AI research.
All of this, and what we can do instead 👇
arxiv.org/abs/2409.14160
https://s3.eu-central-2.wasabisys.com/mastodonworld/media_attachments/files/113/197/086/235/242/904/original/35f70e3883458c9b.png

2024-09-06 14:20:54 UTC

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@npub1m9l…kwd2 Yeah, sure, but dying because a pill is $1500 is also very very unsafe.

2024-09-06 10:15:48 UTC

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@npub19yk…cr89 yes they are <3

2024-09-06 09:48:20 UTC

This is so cool/kind
(AND they're using machine learning to actually do the thing 'for humanity' that companies selling ML to the pharma industry claim it will , but that of course their version will not actually do, given the incentives♥️)
https://www.404media.co/right-to-repair-for-your-body-the-rise-of-diy-pirated-medicine/

2024-08-28 19:14:19 UTC

Such a delight to sit down with the great @npub1fx7…jv34 for a long engaged convo on surveillance, AI, my wild path through tech, and how by rejecting the toxic norm Signal provides a shining model for better, healthier tech futures♥️
https://www.wired.com/story/meredith-whittaker-signal/

2024-08-16 10:41:39 UTC

"'I actually don’t know of a single provider of abortion services like these who has not encountered this problem [of payment platforms cancelling their accounts or holding their money].'”
https://www.thepersistent.com/telemedicine-abortion-payment-providers/

2024-08-01 14:42:26 UTC

📢📢📢Vital work from
@AINowInstitute finding the substance behind the hype, yet again.
Critical reading for anyone who's waved their hands while calling for an "FDA for AI". Here's what that means IRL, where it could work, and the ways it would likely fail w/o big changes.👇
https://ainowinstitute.org/lessons-from-the-fda-for-ai

2024-07-25 11:21:52 UTC

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@npub1t8w…hpgv are you arguing that startups, in themselves, are good for innovation/competition? Such that maximizing their number alone is a boon to innovation/competition?

2024-07-25 10:37:15 UTC

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Taxing equity is also, of course, very alarming to investors.
But the argument that this hurts innovation and competition also falls flat IMO. Taxing unrealized investment value would check the overhype-to-acquisition cycle that makes VC's rich, but directs so much energy and capital into overvalued bullshit that doesn't meaningfully work/help people/etc.

2024-07-25 10:22:08 UTC

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Of course, VC's require an exit, and an acquisition is the classic exit. But a healthy and competitive innovation landscape does not.

2024-07-25 10:22:01 UTC

Catching up on some of the "Little Tech" rhetoric from a16z. A lot more to say here.
But one thing that stands out as a rhetorical flaw in the pitch: curbing Big Tech startup acquisitions is listed as bad for little tech. Even as little tech is presented as the enabler of competition and innovation, contra Big Tech's market consolidation. Consolidation that is, of course, facilitated via acquisitions.

2024-07-24 08:07:04 UTC

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@npub1yea…2nlr yeah

2024-07-24 08:02:50 UTC

Well this is a nice surprise and a cool honor!
Particularly because I'm nominated alongside the brilliant
@HeidyKhlaaf, who deeply deserves this recognition.
My suggestion is that you vote for her! And if you want to vote a second time, then vote for me too 🫶💐🙏
https://cyberscoop.com/cyberscoop50/vote/

2024-07-09 12:05:11 UTC

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We ask those who are serious about security and privacy to please engage us directly in the future, instead of resorting first to online claims that can confuse non-experts and lead people to make unsafe choices and develop inaccurate mental models based on scary language. We monitor security@signal.org carefully and respond to all legitimate reports.

2024-07-09 12:04:43 UTC

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2. We continue working to harden our desktop build across supported operating systems and take advantage of new platform capabilities as they emerge. Those of you following our repo can follow this work there.