HackerNoon Tech Stories: 2026/03/21

March 2026

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On This Day In History

33

Stories Published

Archive: March 21st, 2026

Discovering the tech stories that shaped the day.

IBM

IBM@ibm

https://cdn.hackernoon.com/images/this-noisy-quantum-computer-produces-reliable-results-impossible-to-simulate-classically-dib8hk805bmu3fmbgmyt3o8y.png

This Noisy Quantum Computer Produces Reliable Results Impossible to Simulate Classically

Min Read21 minutes Ago

Noonification

Noonification@noonification

https://cdn.hackernoon.com/images/hackernoon_newsletter_428_f54snywffqyzsmsh3s1h245t.png

The HackerNoon Newsletter: What Is Threshold Encryption? (3/21/2026)

Min Read21 minutes Ago

NVIDIA CORPORATION

NVIDIA CORPORATION@nvidiacorporation

https://cdn.hackernoon.com/images/forget-blender-skills-this-ai-generates-complete-3-d-objects-for-you-xgns55krgmo3xsf3uysdgh76.png

Forget Blender Skills: This AI Generates Complete 3D Objects for You

Min Read25 minutes Ago

IBM

IBM@ibm

https://cdn.hackernoon.com/images/high-efficiency-quantum-error-correction-promises-smaller-stronger-quantum-computers-ygipdty3xe88121gtgfvgp64.png

High-Efficiency Quantum Error Correction Promises Smaller, Stronger Quantum Computers

Min Read26 minutes Ago

Alibaba

Alibaba@alibaba

https://cdn.hackernoon.com/images/ai-revives-old-ev-batteries-fast-cheap-and-green-va22dp95j10tne08wso9tu6w.png

Generative AI Powers Sustainable Reuse of Retired Lithium-Ion Batteries

Min Read28 minutes Ago

Drmike

Drmike@drmike

https://cdn.hackernoon.com/images/La10M2PXCsPrhqN7rQq2OFZEVwT2-0z82097.jpeg

What Is Threshold Encryption?

Min Read29 minutes Ago

Samsung

Samsung@samsung

https://cdn.hackernoon.com/images/scientists-20-built-20-a-20-tiny-20-graphene-20-ball-20-that-20-boosts-20-battery-20-life-20-by-2027-tvruota1728thlx2hauj9kva.png

Faster Charging, Longer Life: The Graphene Trick Upgrading Lithium Batteries

Min Read37 minutes Ago

Alibaba

Alibaba@alibaba

https://cdn.hackernoon.com/images/this-privacy-safe-ai-could-turn-battery-waste-into-big-profit-e1lpx2544a6tb9ghnswcyhgs.png

This Privacy-Safe AI Could Turn Battery Waste Into Big Profit

Min Read41 minutes Ago

Alibaba

Alibaba@alibaba

https://cdn.hackernoon.com/images/how-food-delivery-apps-saved-small-businesses-during-covid-lockdowns-bi0jy920o0i3dhbvcrr4ucto.png

What COVID Taught Us About Digital Platforms and Small Business Survival

Min Readan hour Ago

Samsung

Samsung@samsung

https://cdn.hackernoon.com/images/how-a-sandwich-like-design-supercharged-next-gen-flexible-displays-zfe3pbiw956qrht9njj7ietz.png

Scientists Unlock Ultra-Efficient Flexible Screen Displays Using Graphene and Titanium Dioxide

Min Readan hour Ago

IBM

IBM@ibm

https://cdn.hackernoon.com/images/how-scientists-connected-two-quantum-processors-as-one-giant-qpu-lkoxmce8jxzbls0stebjkakd.png

IBM Quantum Breakthrough: Linking Chips in Real-Time to Expand Qubit Power

Min Readan hour Ago

Samsung

Samsung@samsung

https://cdn.hackernoon.com/images/graphene-coated-20-silicon-20-could-20-supercharge-20-lithium-20-batteries-20-by-2080-zy0plb2nlcdifepzq0evdpfe.png

A Graphene Breakthrough Could Make EV Batteries Last Longer and Store More Energy

Min Readan hour Ago

Tencent

Tencent@tencent

https://cdn.hackernoon.com/images/this-breakthrough-helps-ai-understand-social-networks-without-human-input-u4q0trre9ux8we0mdxxxk5t7.png

A New Way to Train AI on Graph Data Without Supervision

Min Readan hour Ago

IBM

IBM@ibm

https://cdn.hackernoon.com/images/quantum-computing-breakthrough-correcting-errors-in-real-time-mmipynrqs4qqvs12dgqam18u.png

Quantum Computing Breakthrough: Correcting Errors in Real-Time

Min Readan hour Ago

Alibaba

Alibaba@alibaba

https://cdn.hackernoon.com/images/how-ai-used-satellite-images-to-reveal-hidden-settlements-in-the-himalayas-tylzkf3zq3r7ldayqy9kz7lq.png

AI Maps 13 Million Buildings in One of the World’s Most Remote Regions

Min Readan hour Ago

ByteDance

ByteDance@bytedance

https://cdn.hackernoon.com/images/inside-tiktoks-monolith-powering-smarter-faster-content-feeds-o6vu31qtnlhlkcnn4zp1hilq.png

Inside ByteDance’s Monolith: The Engine Powering Smarter, Faster Content Feeds

Min Readan hour Ago

Cisco Systems

Cisco Systems@ciscosystems

https://cdn.hackernoon.com/images/why-your-ai-doesnt-need-the-cloud-to-run-faster-anymore-aj1exz45cfbk1vym3aljdfb4.png

Why Your AI Doesn’t Need the Cloud to Run Faster Anymore

Min Readan hour Ago

IBM

IBM@ibm

https://cdn.hackernoon.com/images/the-all-in-one-coding-built-for-real-world-software-teams-n9fcnrkhlos7lt4ni8o0g1or.png

This New AI Model Could Replace Half Your Coding Workflow

Min Readan hour Ago

MattLeads

MattLeads@mattleads

https://cdn.hackernoon.com/images/pL08BO3ouKNkhrqPjjNqbI6Myh73-r283eoc.jpeg

How to Build a Hybrid Passkey Strategy in Symfony 7.4: Navigating Beyond the Passwordless Fortress

Min Read2 hours Ago

Ademola Balogun

Ademola Balogun@ademolabalogun

https://cdn.hackernoon.com/images/SpyyNn0DiuTGW5f8Hz85qIlQtBq1-1f83i3t.png

Why RAG Is Failing at Complex Questions (And How Knowledge Graphs Fix It)

Min Read5 hours Ago

Naresh Waghela

Naresh Waghela@nareshwaghela

https://cdn.hackernoon.com/images/WRKXsk2LTlf1y3hllka3QO7Bfvy2-a823ebw.jpeg

Optimizing Local LLM Inference for 8GB VRAM GPUs

Min Read5 hours Ago

Arun Kumar Gattu Sambaiah

Arun Kumar Gattu Sambaiah@agattus

https://cdn.hackernoon.com/images/NEQp8eJsRQOzV9aQcMmHBa2QPP92_ft6vtcto.jpeg

Preventing LLM Hallucinations in High-Stakes Banking Operations

Min Read5 hours Ago

Michael Chukwube

Michael Chukwube@codelynx

https://cdn.hackernoon.com/images/ogLjQOI8STUK2kIzi4UX9fhl1za2-t903bz1.jpeg

Crypto Is No Longer About Coins, It’s About Financial Infrastructure

Min Read5 hours Ago

Astounding Stories

Astounding Stories@astoundingstories

https://cdn.hackernoon.com/images/inspector-n-a-hat-in-a-small-town-resolving-murder-iwan442cj6j0scwmx47ltazm.png

Blackmail and the Dagger Clues

Min Read5 hours Ago

Ramya

Ramya@ramyav

https://cdn.hackernoon.com/images/P33KyhVWZ1QiAIO4GvOAnc7YAvB3-9oe3fdv.png

The WAF Said Nothing. The IDS Said Nothing. The ML Model Said "Block This." Here's How We Built That

Min Read5 hours Ago

@samshtech

https://cdn.hackernoon.com/images/sinW25rWovdN38P2ArzdPSCP3hi1-qd039z8.jpeg

The Importance of Scalable IT Infrastructure for Growing Businesses

Min Read6 hours Ago

Hutch

Hutch@hutchpd

https://cdn.hackernoon.com/images/B5zxAr16jiPV7pP9UETc1atP9k93-rq03c0i.jpeg

Positronic Variables in C#: Teaching State to Argue with the Future

Min Read6 hours Ago

Astounding Stories

Astounding Stories@astoundingstories

https://cdn.hackernoon.com/images/the-unfolding-mystery-of-fernly-park-gjcsc54bjnpl64x9m4hsoahc.png

The Unfolding Mystery of Fernly Park

Min Read7 hours Ago

Techbeat

Techbeat@techbeat

https://cdn.hackernoon.com/images/hackernoon_newsletter_145_kis6c6vql84h7vaa7uryygn4.png

The TechBeat: How to Master Any Skill: Explaining the Biological Shortcut (3/21/2026)

Min Read10 hours Ago

Jose

Jose@joseh

https://cdn.hackernoon.com/images/eQHzh6rz7ETBHLjs0KzCl1Dooqp2-6m83ei3.jpeg

Peter Parker's 5 Best Suits In Marvel's Spider-Man 2

Min Read14 hours Ago

Hacktivist

Hacktivist@hacktivist

https://cdn.hackernoon.com/images/cyber-defenses-abstract-jogq7bbaqzhu1yjdlrbe1mbp.png

Phineas Fisher: MITRE ATT&CK Analysis & ICS Defenses

Min Read14 hours Ago

Astounding Stories

Astounding Stories@astoundingstories

https://cdn.hackernoon.com/images/the-night-roger-was-murdered-ddtdovauxhg2kj05kzf1w7m1.png

The Night Roger Ackroyd Was Murdered

Min Read15 hours Ago

TreeMap

TreeMap@treemap

https://cdn.hackernoon.com/images/autumn-trees-u0kvud26io7otngcvf0xksml.png

LZ-Trees: Context-Free Grammar Enumeration via Subtree Reuse

Min Read15 hours Ago