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Simon Willison's Weblog Supports Webmention Valid
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When a Jira Ticket Can Steal Your Secrets

When a Jira Ticket Can Steal Your Secrets Zenity Labs describe a classic lethal trifecta attack, this time against Cursor, MCP, Jira and Zendesk. They also have a short video demonstrating the issue. Zendesk support emails are often connected to Jira, such that incoming supp...

Simon Willison's Weblog Supports Webmention Valid
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My Lethal Trifecta talk at the Bay Area AI Security Meetup

I gave a talk on Wednesday at the Bay Area AI Security Meetup about prompt injection, the lethal trifecta and the challenges of securing systems that use MCP. It wasn't recorded but I've created an annotated presentation with my slides and detailed notes on everything I talk...

Daring Fireball Valid
Text • John Gruber

★ Gold, Frankincense, and Silicon

A list of various related news items and clips from this, and recent, weeks: Apple Newsroom, on Wednesday — “Apple Increases U.S. Commitment To $600 Billion, Announces American Manufacturing Program”: Apple today announced a new $100 billion commitment to America, a s...

Simon Willison's Weblog Supports Webmention Valid
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Hypothesis is now thread-safe

Hypothesis is now thread-safe Hypothesis is a property-based testing library for Python. It lets you write tests like this one: from hypothesis import given, strategies as st @given(st.lists(st.integers())) def test_matches_builtin(ls): assert sorted(ls) == my_sort(ls) ...

Simon Willison's Weblog Supports Webmention Valid
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Quoting @pearlmania500

I have a toddler. My biggest concern is that he doesn't eat rocks off the ground and you're talking to me about ChatGPT psychosis? Why do we even have that? Why did we invent a new form of insanity and then they charge people for it?

— @pearlmania500, on TikTok

Tags: ai-ethics, chatgpt, tiktok, ai

kottke.org Valid
Text • Jason Kottke

“James Lovell, the commander of Apollo 13 who helped turn a failed...

“James Lovell, the commander of Apollo 13 who helped turn a failed moon mission into a triumph of on-the-fly can-do engineering, has died. He was 97.”

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xkcd.com Valid
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Disclaimer

You say no human would reply to a forum thread about Tom Bombadil by writing and editing hundreds of words of text, complete with formatting, fancy punctuation, and two separate uses of the word 'delve'. Unfortunately for both of us, you are wrong.

Simon Willison's Weblog Supports Webmention Valid
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Quoting Sam Altman

GPT-5 rollout updates: We are going to double GPT-5 rate limits for ChatGPT Plus users as we finish rollout. We will let Plus users choose to continue to use 4o. We will watch usage as we think about how long to offer legacy models for. GPT-5 will seem smarter starting tod...

Simon Willison's Weblog Supports Webmention Valid
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The surprise deprecation of GPT-4o for ChatGPT consumers

I've been dipping into the r/ChatGPT subreddit recently to see how people are reacting to the GPT-5 launch, and so far the vibes there are not good. This AMA thread with the OpenAI team is a great illustration of the single biggest complaint: a lot of people are very unhappy...

kottke.org Valid
Text • Jason Kottke

The Danish post office will stop delivering mail (but not parcels) at...

The Danish post office will stop delivering mail (but not parcels) at the end of 2025. “Letter volumes have decreased by over 90 percent since 2000”. But over 100 million letters were delivered in 2024…that’s still a tremendous number.

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Radiolab Updates instantly via WebSub
Audio • WNYC Studios

The Menopause Mystery

Until recently, scientists assumed humans were the only species in which females went through menopause, and lived a substantial part of their lives after they were no longer able to reproduce. And they had no idea why that happens, and why evolution wouldn’t push females to...

The Atlas Obscura Podcast Updates instantly via WebSub
Audio • SiriusXM Podcasts & Atlas Obscura

The Ark of Citrus (Classic)

There are thousands of varieties of citrus, many more than just the navel oranges. And they’re all being preserved in a collection at the University of California Riverside. Learn more here.


Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

kottke.org Valid
Text • Jason Kottke

“New FBI data shows that both violent crime and property crime are...

“New FBI data shows that both violent crime and property crime are at their lowest level since the 1960s” but the media disproportionately covers crime, so most Americans aren’t aware of the decrease.

kottke.org Valid
Text • Jason Kottke

Why wildlife crossings and crucial for animals and humans: they embiggen habitats...

Why wildlife crossings and crucial for animals and humans: they embiggen habitats and greatly reduce vehicle-animal collisions.

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kottke.org Valid
Text • Jason Kottke

From the Phonograph podcast, a look at the early days of 99%...

From the Phonograph podcast, a look at the early days of 99% Invisible (as that podcast’s 15th anniversary approaches).

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kottke.org Valid
Text • Jason Kottke

Tractor beams exist in the real world. They use ultrasound to hover...

Tractor beams exist in the real world. They use ultrasound to hover and manipulate tiny objects. “It can be thought of as an acoustic hologram. It’s a shape that exists in space but is made of sound.”

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kottke.org Valid
Text • Jason Kottke

Vintage Bike Tricks, Circa 1965

Lilly Yokoi was an acrobat who specialized in performing on a bicycle. During her career, she toured around the world and appeared on the Ed Sullivan show three times. In this performance from 1965, Yokoi does some seriously before-their-time tricks on her Golden Bicycle, including a no-hands handlebar spin, a no-hands wheelie, a handstand over the handlebars, and several other tricks…all in chunky high heels, mind you.

Here’s an even earlier performance, from 1961. See also some bike tricks filmed by Thomas Edison in 1899.

[This is a vintage post originally from Nov 2014.]

Tags: cycling · Lilly Yokoi · timeless posts · video

Accidental Tech Podcast
Audio

651: Your Judgement About Pockets

Pre-Show: Brief vacation results Tim Cook kisses the… ring Video Follow-up: HDTVTest reviews Sony Bravia 8 II and Panasonic Z95B TV shootout results Nilay’s comments AppleCare One iCareCalculator Reddit post (removed by moderators) iCare Calculator web...

Simon Willison's Weblog Supports Webmention Valid
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Previewing GPT-5 at OpenAI's office

A couple of weeks ago I was invited to OpenAI's headquarters for a "preview event", for which I had to sign both an NDA and a video release waiver. I suspected it might relate to either GPT-5 or the OpenAI open weight models... and GPT-5 it was!

OpenAI had invited five developers: Claire Vo, Theo Browne, Ben Hylak, Shawn @swyx Wang, and myself. We were all given early access to the new models and asked to spend a couple of hours (of paid time) experimenting with them, while being filmed by a professional camera crew.

The resulting video is now up on YouTube. Unsurprisingly most of my edits related to SVGs of pelicans.

Tags: youtube, gpt-5, generative-ai, openai, pelican-riding-a-bicycle, ai, llms

kottke.org Valid
Text • Jason Kottke

Substack’s extremist ecosystem is flourishing. “The Nazi push alert was only possible...

Substack’s extremist ecosystem is flourishing. “The Nazi push alert was only possible because of Substack’s continued commitment to not only hosting but actively promoting authoritarian, Nazi-sympathizing, and other bigoted forms of extremism.”