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How Credit Cards Make Money

https://www.bitsaboutmoney.com/archive/how-credit-cards-make-money/
2•jimsojim•1h ago

Comments

DivingForGold•10m ago
There is no incentive from the banks and industry to offer consumers a very limited credit card so consumers can protect themselves. Like a $100 credit limit, (which I would pay an annual fee for - as a sort of insurance).

There are just too many sketchy online merchants out there who might just attempt to charge your card way more than the agreed upon sales price, then there are those who I disfavor who "pre-authorize" your card for $500 or more, like rental car companies. Every 6 months or less I call in one of my credit cards to the issuer, one at a time, so I have one still active, and tell them it was stolen. This "flushes out" your old credit card no. from hackers and sketchy merchants, gives you a brand new number. I also almost always only deal with brick and mortar merchants who off "touch to pay" (the chip), never swipe, since I have had my cards hacked at least 3x from swipe, it's old tech and being scammed at gas pumps nationwide.

Johnson Thermoelectric Energy Converter

https://en.wikipedia.org/wiki/Johnson_thermoelectric_energy_converter
1•simonebrunozzi•21s ago•0 comments

Prompt Injection Is Not a Chatbot Problem: How the Attack Surface Changes

https://agentsafelabs.com/blog/prompt-injection-is-not-a-chatbot-problem-how-the-attack-surface-c...
1•waqarjaved•21s ago•0 comments

Rust Service Isn't Leaking – It Could Be the Allocator

https://pranitha.dev/posts/rust-and-memory-allocators/
1•abhirag•33s ago•0 comments

Claude Desktop is now available on Linux (in beta)

https://twitter.com/ClaudeDevs/status/2071988881717871065
1•Recursing•34s ago•1 comments

Connect any self-hosted WordPress site to your AI

https://wpvibe.ai/start/
1•luispa•2m ago•0 comments

Comparing GLM 5.2 and Opus 4.8 implementing the same methods for the same repos

https://gist.github.com/smellslikeml/36bf4939d76f0f84d113e2ddde5e6d3c
1•mynameisfunk•4m ago•0 comments

Show HN: Deconstructing Anthropic's Coding Agent Control Model

https://www.highflame.com/blog/how-anthropic-contains-its-own-coding-agents-and-get-that-coverage...
1•sharathr•4m ago•0 comments

Apple to Adopt Next-Generation Display Color Standard

https://www.trendforce.com/presscenter/news/20260629-13124.html
1•ledoge•6m ago•0 comments

Useful LLM Prompts for Editing Your Own Technical Writing

https://techstackups.com/articles/useful-llm-prompts-for-editing-your-own-technical-writing/
1•ritzaco•7m ago•0 comments

Ford rehires 'greybeards' after AI tech fails to deliver

https://www.msn.com/en-us/news/technology/ford-rehires-human-engineers-after-ai-fails-to-match-qu...
2•ilamont•9m ago•0 comments

Shipping post-quantum cryptography to Python

https://blog.trailofbits.com/2026/06/30/shipping-post-quantum-cryptography-to-python/
1•logickkk1•11m ago•0 comments

Forget Work. Passive Income Is the New American Dream

https://www.wsj.com/lifestyle/careers/passive-income-dreams-2e67ee5c
1•apparent•13m ago•0 comments

California Is Chasing Wealth That Has Feet

https://progressandpoverty.substack.com/p/california-is-chasing-wealth-that
3•slackpad•14m ago•2 comments

Millions take omega-3 fish oil for brain health but a new study found no benefit

https://www.sciencedaily.com/releases/2026/06/260622014300.htm
2•eustoria•16m ago•0 comments

Investigating Linux Graphics (2025)

https://roscidus.com/blog/blog/2025/06/24/graphics/
1•birdculture•17m ago•0 comments

Apple Just Fixed Mac Gaming and Said Nothing [video]

https://www.youtube.com/watch?v=3ZlPEsiaGiQ
2•lordleft•17m ago•0 comments

Show HN: 143.dev – we open-sourced our internal coding-agent infrastructure

3•johnjwang•17m ago•0 comments

Om

https://netwert.com/ideapad/2026/06/30/om/
2•eustoria•20m ago•0 comments

Impressions from Visiting OpenAI, Anthropic, & Cursor

https://newsletter.pragmaticengineer.com/p/impressions-from-visiting-openai
1•monkeydust•20m ago•0 comments

New Claude app strings, Fable 5 coming back only with verification

https://twitter.com/kimmonismus/status/2071868011804266828
4•garo-pro•20m ago•0 comments

Show HN: Build better UI with Hermes agents

https://www.typeui.sh/docs/guides/hermes
1•elwingo1•20m ago•0 comments

We Are All Weird

https://seths.blog/2026/06/we-are-all-weird-2/
2•eustoria•21m ago•0 comments

The first early human eggs from stem cells

https://www.conception.bio/science-and-updates/the-first-early-human-eggs-from-stem-cells
1•mattkrisiloff•23m ago•0 comments

I built a mmWave material classification radar

https://gauthier-lechevalier.com/radar
12•GL26•25m ago•0 comments

The Brain of a 319M-Year-Old Fossil Fish

https://nautil.us/inside-the-brain-of-a-319-million-year-old-fossil-fish-1282311
1•Brajeshwar•25m ago•0 comments

Claude Sonnet 5 Could Be Released Later Today, May Not Be Better Than Opus 4.8

https://old.reddit.com/r/singularity/comments/1ujt3ui/claude_sonnet_5_could_be_released_later_tod...
1•garo-pro•27m ago•1 comments

Show HN: I built an AI agent to yell at me about my ADHD

https://0xff.nu/hex/
1•hxii•30m ago•0 comments

Ask HN: How are you using AI agents for testings features?

1•pranshuchittora•30m ago•1 comments

Claude Tag

https://claude.com/docs/claude-tag/overview
1•akarshhegde18•31m ago•0 comments

Frontier Inference Clusters

https://www.etched.com
1•Marius77•32m ago•0 comments