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Should you use a standing desk? The benefits are real, but seem to vary with age

https://www.economist.com/science-and-technology/2025/08/15/should-you-use-a-standing-desk
1•helsinkiandrew•2m ago•1 comments

High priests: why scientists gave magic mushrooms to the clergy

https://www.economist.com/culture/2025/08/21/high-priests-why-scientists-gave-magic-mushrooms-to-...
1•helsinkiandrew•3m ago•1 comments

Show HN: A "Catalog of Catalogs" for Unified Metadata

https://github.com/apache/gravitino
1•apachegravitino•7m ago•0 comments

Microsoft Windows 95 Launch with Bill Gates and Jay Leno (1995) [video]

https://www.youtube.com/watch?v=_JzfROUDsK0
2•unleaded•10m ago•0 comments

Remembering the Hysteria over Windows 95 Launch, 1995

https://rarehistoricalphotos.com/windows-95-launch-day-1995/
2•js2•11m ago•0 comments

A visual introduction to big O notation

https://samwho.dev/big-o/
1•samwho•12m ago•0 comments

Elon Musk's X Agrees to Settlements with Former Employees

https://www.nytimes.com/2025/08/22/technology/elon-musk-x-settlements.html
2•01-_-•12m ago•0 comments

The biggest chipmaker needs to move beyond Taiwan

https://www.economist.com/briefing/2025/08/21/the-worlds-biggest-chipmaker-needs-to-move-beyond-t...
3•01-_-•13m ago•0 comments

Google AI Gemini

1•drcrapper•16m ago•1 comments

Airborne Aircraft Carriers for Observers, Sensors, Antennas – and Other Aircraft

https://www.combatreform.org/airborneaircraftcarriers.htm
1•Michelangelo11•22m ago•1 comments

DeepWiki: Understand Any Codebase

https://www.aitidbits.ai/p/deepwiki
1•childishnemo•28m ago•0 comments

Arnold J. Toynbee

https://en.wikipedia.org/wiki/Arnold_J._Toynbee
1•handfuloflight•37m ago•0 comments

How to Fix Your Context

https://www.dbreunig.com/2025/06/26/how-to-fix-your-context.html
1•itzlambda•41m ago•0 comments

Grok 2.5 is now open source. Grok 3 will be open source in about 6 months

https://twitter.com/elonmusk/status/1959379349322313920
2•tosh•43m ago•0 comments

Small Talk

https://talk.bradwoods.io/blog/small-talk/
1•bradwoodsio•50m ago•0 comments

Seed: Interactive software environment based on Common Lisp

https://github.com/phantomics/seed
2•todsacerdoti•54m ago•0 comments

Rapid loss of Antarctic ice may be climate tipping point

https://www.reuters.com/sustainability/cop/rapid-loss-antarctic-ice-may-be-climate-tipping-point-...
7•yusufaytas•1h ago•0 comments

Show HN: Strapped – A gut wrenching short story about anxiety and inner demons

1•theputdown•1h ago•0 comments

Neural Nets vs. Cellular Automata

https://www.nets-vs-automata.net/
3•todsacerdoti•1h ago•0 comments

SurrealDB is sacrificing data durability to make benchmarks look better

https://blog.cf8.gg/surrealdbs-ch/
1•vulnerabiliT•1h ago•0 comments

Half my work is adding a cache

https://blog.waleedkhan.name/half-my-work-is-adding-a-cache/
2•LostMyLogin•1h ago•0 comments

The Swiss Federal Council: A Unique Model of Shared Leadership

https://patriciabt.com/blog/the-swiss-federal-council-a-unique-model-of-shared-leadership/
1•luu•1h ago•0 comments

In-Memory Filesystems in Rust

https://andre.arko.net/2025/08/18/in-memory-filesystems-in-rust/
2•ingve•1h ago•0 comments

Sci-Hub Now Blocked in India

https://spicyip.com/2025/08/sci-hub-now-completely-blocked-in-india.html
5•thunderbong•1h ago•0 comments

Consumer Rights Wiki Mission Statement

https://consumerrights.wiki/Mission_statement
3•soraminazuki•1h ago•0 comments

Did the Camera Ever Tell the Truth? [video]

https://www.youtube.com/watch?v=Sf3wEg9tsCY
3•handfuloflight•1h ago•0 comments

Turning a Decommissioned iPhone into a UniFi Protect Camera

https://www.caseyliss.com/2025/8/15/a-rube-goldberg-camera
1•ingve•1h ago•0 comments

Buy a Faster CPU

https://blog.howardjohn.info/posts/buy-a-cpu/
3•ingve•1h ago•0 comments

Equal Earth – Political Wall Map (2018)

https://equal-earth.com/index.html
18•bjelkeman-again•1h ago•10 comments

Wildthing – A model trained on role-reversed ChatGPT conversations

https://youaretheassistantnow.com/
25•iamwil•2h ago•9 comments
Open in hackernews

Agentic Browser Security: Indirect Prompt Injection in Perplexity Comet

https://brave.com/blog/comet-prompt-injection/
22•drak0n1c•4h ago

Comments

paool•3h ago
Interesting to see the evolution of "Ignore previous instructions. Do ______".
veganmosfet•3h ago
As possible mitigation, they mention "The browser should distinguish between user instructions and website content". I don't see how this can be achieved in a reliable way with LLMs tbh. You can add fancy instructions (e.g., "You MUST NOT...") and delimiters (e.g., "<non_trusted>") and fine-tune the LLM but this is not reliable, since instructions and data are processed in the same context and in the same way. There are 100s of examples out there. The only reliable countermeasures are outside the LLMs but they restrain agent autonomy.
JoshTriplett•3h ago
The reliable countermeasure is "stop using LLMs, and build reliable software instead".
danielbln•1h ago
https://simonwillison.net/2025/Apr/11/camel/
veganmosfet•51m ago
Is the CaMel paper's idea implemented in some available agents?
wat10000•2h ago
It’s not possible as things currently stand. It’s worrying how often people don’t understand this. AI proponents hate the “they just predict the next token” approach, but it sure helps a lot to understand what these things will actually do for a particular input.
_drewpayment•2h ago
I think the only way I could see it happening is if you were to build an entire reversal layer with like LangExtract, tried to determine the user's intent from the question and then used that as middleware for how you let the LLM proceed based on its intent... I don't know, it seems really hard.
isodev•2h ago
I just can’t help but wonder why was it we decided bundling random text generators with browsers was a good idea? I mean it’s a cool toy idea but shipping it to users in a critical application… someone should’ve said no.
thrown-0825•1h ago
our societies reward function is fundamentally flawed
thekevan•48m ago
To be fair, that was a reddit post that blatantly started with "IMPORTANT INSTRUCTIONS FOR Perplexity Comet". I get the direction they are going but the example shown was so obviously ham-handed. It clearly instructed the browser--in clear language--to get login info and post it in the the thread.

Show me something that is obfuscated and works.

mcintyre1994•43m ago
I’m curious if it would work if it was further down the comments or buried in a tree of replies. If all you need to do is be somewhere in the Reddit comments then you don’t need to obfuscate it in many cases, a human isn’t going to see everything there.