The TechBeat: Why 100 Percent Test Coverage is Not Possible — Lessons from Testing Banking and Healthcare Systems (1/1/2026)

How are you, hacker? 🪐Want to know what's trending right now?: The Techbeat by HackerNoon has got you covered with fresh content from our trending stories of the day! Set email preference here. ## The Hidden Cost of AI: Why It’s Making Workers Smarter, but Organisations Dumber By @yuliiaharkusha [ 8 Min read ] AI boosts individual performance but weakens organisational thinking. Why smarter workers and faster tools can leave companies less intelligent than before. Read More.

Should You Trust Your VPN Location?

By @ipinfo [ 9 Min read ] IPinfo reveals how most VPNs misrepresent locations and why real IP geolocation requires active measurement, not claims. Read More.

How to Build an n8n Automation to Read Kibana Logs and Analyze Them With an LLM

By @indrivetech [ 6 Min read ] How we built an n8n automation that reads Kibana logs, analyzes them with an LLM, and returns human-readable incident summaries in Slack Read More.

Best Amazon Scraper APIs for 2025: Top Picks Compared

By @oxylabs [ 9 Min read ] Compare the best Amazon Scraper APIs for 2025, analyzing speed, pricing, reliability, and features for scalable eCommerce data extraction. Read More.

Secury Wallet Unveils Next-Generation Multichain Crypto Wallet With Chat to Pay, Opens $SEC Presale

By @btcwire [ 2 Min read ] The project has opened the $SEC token presale, including early staking opportunities offering up to 100% APY during the presale phase. Chat to Pay is an instant Read More.

Why Verifiability Matters for Security: 12 Key Cloud Application Use Cases

By @michaellewellen [ 3 Min read ] Verifiability is becoming essential for crypto, AI, and cloud apps. Learn why proving how systems run will shape the next gen of secure infrastructure. Read More.

Coding Rust With Claude Code and Codex

By @tigranbs [ 10 Min read ] How Rust's strict compiler transforms AI coding tools into reliable pair programmers and why the language is uniquely positioned for the age of agentic coding Read More.

2 Billion Requests, 100ms Deadlines, $10k a Month: Engineering a Lean Global RTB System

By @shashanksingla [ 8 Min read ] Inside a lean RTB system processing 350M daily requests with sub-100ms latency, built by a 3-person team on a $10k cloud budget. Read More.

Tech's Attempt To Conquer Hollywood

By @3techpolls [ 5 Min read ] AI has been a major force in seemingly every career field. Now, it seems to have set its eyes somewhere else: Hollywood. Read More.

AI - Should we Be Afraid? 3 Years Later

By @djcampbell [ 6 Min read ] Is AI good or bad? We must decide. Read More.

Java’s Growing Graveyard: The Old APIs Being Buried—and What Replaced Them

By @akiradoko [ 9 Min read ] The Java “tomb” is filling up. Here’s what’s being buried—and what you should use instead. Read More.

Meet ScyllaDB: HackerNoon Company of the Week

By @companyoftheweek [ 4 Min read ] Meet ScyllaDB, the high-performance NoSQL database delivering predictable millisecond latencies for Discord and hundreds more. Read More.

The Architecture of Collaboration: A Practical Framework for Human-AI Interaction

By @theakashjindal [ 7 Min read ] AI focus shifts from automation to augmentation ("Collaborative Intelligence"), pairing AI speed with human judgment to boost productivity. Read More.

Hiring Didn’t Fail - Evidence Did.

By [@Dandilion Civilization](https://hackernoon.com/u/Dandilion Civilization) [ 5 Min read ] I didn’t break hiring. It broke the evidence. Why CVs and training signals no longer predict capability, and what HR should use instead in 2026 Read More.

Adapting to AI: Insights from a Project Manager in Game Development

By @tolstykhzhe [ 9 Min read ] I became a project manager in a game company in 2021 and witnessed how production processes evolved in parallel with the rapid emergence of new AI tools. Read More.

Small Language Models Beat GPT-4 for Our Use Case: 94% Cost Reduction

By @dineshelumalai [ 5 Min read ] Small language models outperformed GPT-4 for our use case. Learn how we achieved 94% cost reduction, faster response times, and higher customer satisfaction wit Read More.

The Infinite Loop of "Fixing the Build": How to Escape CI/CD Purgatory

By @huizhudev [ 5 Min read ] A guide to transforming CI/CD pipeline creation from a manual chore into an automated, architectural process using a specialized AI system prompt. Read More.

How Anonymous Instagram Stories Viewing Changed My Social Media Strategy

By @sanya_kapoor [ 6 Min read ] Anonymous Instagram Story viewing enables private research, reduces social pressure, and reshapes how we engage with public content. Read More.

Why 100 Percent Test Coverage is Not Possible — Lessons from Testing Banking and Healthcare Systems

By @dapssy [ 5 Min read ] Quality is not about testing everything; quality is about testing what is most important. Read More.

Slop Isn’t the Problem. It’s the Symptom.

By @normbond [ 3 Min read ] When teams move fast without shared meaning, quality dissolves quietly. Why slop is a symptom of interpretation lag, not a technology failure. Read More. 🧑‍💻 What happened in your world this week? It's been said that writing can help consolidate technical knowledge, establish credibility, and contribute to emerging community standards. Feeling stuck? We got you covered ⬇️⬇️⬇️ ANSWER THESE GREATEST INTERVIEW QUESTIONS OF ALL TIME We hope you enjoy this worth of free reading material. Feel free to forward this email to a nerdy friend who'll love you for it. See you on Planet Internet! With love, The HackerNoon Team ✌️