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DEV Community · Technology

When a Safety Reviewer Rejected Everything and Still Passed Its Test

This is a submission for DEV's Summer Bug Smash: Smash Stories powered by Sentry. ARGUS is a data-catalog governance swarm. Specialist agents find missing descriptions, untagged sensitive columns, broken lineage assumptions, and other metadata defects. An Arbiter reviews each proposed repair before...

Joshua Hernandez 4 days ago

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# Stopping S3 Data Exfiltration in Real Time: A Step-by-Step Incident Response

The Scenario An EC2 instance with an attached IAM role has s3:GetObject on a bucket containing sensitive data. An attacker compromises the instance, extracts temporary credentials from the metadata service, and begins bulk-downloading objects. GuardDuty fires Exfiltration:S3/AnomalousBeha...

Danh Hoang Hieu Nghi 4 days ago

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DEV Community · Technology

How to Add a Human Review Gate to an n8n Lead Intake Workflow

Most lead intake automations work on the happy path. A form arrives, the workflow sends an email, and the lead appears in a CRM. The expensive failures happen at the edges: the same webhook is delivered twice a required field is missing a high-risk message is routed automatically an API accepts t...

Joshua Hernandez 4 days ago

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My First week in data Engineering:Setting Up My tools

This marked the beginning on an exiting journy .I started exploring Data Engineering. My firt focus was tool getting familiar with the required tools.I started setting up and exploring Dev.t,DBEaver,Aiven,git hub and git bash,Visual sudio. One of the most exiting part is that i even successfully u...

calvince okoth 4 days ago

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DEV Community · Technology

How to Use a LinkedIn CV generator and What transfers to a Resume

How to Convert Your LinkedIn Profile into an ATS-Friendly Resume A LinkedIn CV generator can give you a draft, but a LinkedIn profile does not transfer cleanly into a resume. LinkedIn's PDF export can truncate sections, cannot be edited or tailored, and is not built for ATS parsing. The...

Illeana Vowies 4 days ago

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Same Zone, Same Projection, 427 Metres Apart

I was writing a blog post about the architecture of a system I built when I found a bug in it. This is that bug, and the much more interesting thing standing behind it. The system ingests mobile mapping surveys — LiDAR trajectories with spherical photos along them, driven along roads. The files arr...

Srdjan Popovic 4 days ago

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DEV Community · Technology

# My First Week Learning Git

This week, I was introduced to Git and GitHub as part of my Data Science learning journey. At first, I found Git a little confusing. There were several commands to learn, and I wasn't sure how they all fitted together. After practising, I started to understand that Git is mainly about keeping trac...

Zena Muhoro 4 days ago

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What 166K Clicks Taught Me About Using AI for SEO

Over three months, my static website generated 166K Google clicks from 1.39M impressions, with an 11.9% CTR and 7.5 average position. The graph also shows traffic declining after its peak. That is important: AI did not create automatic, permanent growth. What helped was using AI inside a measurable...

Mofidul Islam 4 days ago

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DEV Community · Technology

From MKDIR to GIT PUSH: What Actually Happens to a Project?

The first time you see a Git workflow, it can look like a list of commands you are supposed to memorize: git add. git commit -m "Initial commit" git push Three commands, and somehow the project ends up on GitHub. But what actually happens between creating a folder on your computer and seei...

Esther Njihia 4 days ago

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MCP Security: Threat Model & Hardening Guide (2026)

Educational & Ethical Use Only — This article is provided for educational and ethical cybersecurity research purposes only. The techniques described should only be used on systems you own or have explicit permission to test. The Model Context Protocol has become the default way AI applications...

Prabhu Kalyan Samal 4 days ago

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Seedance 2.5 Prompting: A Practical Guide to Better AI Videos

Writing a good Seedance 2.5 prompt is less about adding more adjectives and more about giving the model a clear sequence of instructions. For example: A woman drinking coffee in Paris, cinematic. It sounds fine, but a video model still has to decide what happens next. Does she pick up the...

jeanine huang 4 days ago

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DEV Community · Technology

One version bump, 40 files to edit. Import maps fix that.

grep -rl "esm.sh/lodash-es@4.17.21" src/ came back with forty-one files. Forty-one places where the same CDN URL, pinned to the same version, was typed out by hand at the top of a module. The security advisory said bump to 4.17.22. A sed one-liner across the repo felt fine until it silently skipped...

Parsa Jiravand 4 days ago

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Beyond the Badge: What Happens When We Redefine Leadership?

We see it on our professional feeds every single day : an election result announced, a campus lead appointed, or a post thanking mentors for a new title. There is real value in celebrating these milestones. Stepping into public roles takes courage, and ensuring projects execute smoothly requires ge...

Vasundhara 4 days ago

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DEV Community · Technology

PostgreSQL psql: Schema Navigation Quick Reference

A short refresher for navigating PostgreSQL databases, schemas, and objects from the psql command line. Schemas List all schemas: \dn List schemas with additional information: \dn+ Check the current schema search path: SHOW search_path; Set the schema search pa...

Amelye Chatila 4 days ago

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My First GitHub Project: From a Local Folder to GitHub Using Git & SSH

Introduction It is important to note that Git and GitHub are not the same thing and have different purposes. Git is a version control system that runs on my PC and helps track changes to files. GitHub on the other hand is an online platform where Git repositories can be stored, shared, an...

Elijah Karimi 4 days ago

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My First GitHub Project: From a Local Folder to GitHub Using Git and SSH.

Introduction The following is a step-by-step process of how i was able create my first GitHub project from a local folder and upload it to Github using Git and SSH. Creating a local folder using git. Using Gitbash, I wanted to see the list of files and directories on my pc. I...

Gabriel Wainaina 4 days ago

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Deploying My First Web Server with Nginx

Today I worked on a simple but important DevOps task: deploying a web server using Nginx on Ubuntu. Instead of only learning the theory, I wanted to understand the practical flow of how a web server receives a request and serves a webpage. What I Did Installed and verified Nginx Starte...

Beny 4 days ago

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DEV Community · Technology

Completion Is an Ownership Boundary

An async method can finish its useful work and still be holding lifecycle state that tells the rest of the system it is active. That sounds like a tiny implementation detail. Under concurrency, it becomes a contract bug. I recently inspected a committed C# fix where an attempt could settle while t...

Ivan Rossouw 4 days ago

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DEV Community · Technology

Product Engineering Alignment

A feature takes three days to code and three weeks to deliver. The difference is not always engineering capacity. A developer starts implementation and discovers that an eligibility rule is undefined. Product needs an answer from operations. A missing UX state appears next. Then engineering finds t...

mjodeh 4 days ago

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DEV Community · Technology

This was an increadible package!! It was appearing on pub.dev for just a single word like "SOS" search!! Go check this out!

I was tired of SOS apps failing in dead zones, so I built a pure Dart, 100% offline TFLite crash detection engine. Bhagya Prasad Dannina...

BHAGYA PRASAD 4 days ago

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My Experience Running a Homelab on Oracle Cloud’s Free VPS

It’s been a while since I wrote a blog post. Recently, I decided to get back into writing and document something I’ve been playing around with: setting up a small homelab environment on an Oracle Cloud Free Tier VPS. As a software engineer, I’ve always been interested in what happens behind the scen...

Kriss Sachintha 4 days ago

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Building a Private Agentic OS with Local LLMs: Lessons from Eliza, Hister, and the Planning Problem

Originally published on tamiz.pro. Introduction We are witnessing a fundamental shift in software architecture: the transition from passive APIs to active agents. While the industry has been obsessed with the race for Artificial General Intelligence (AGI) through massive cloud models, a...

Tamiz Uddin 4 days ago

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A Developer's Checklist for Every RAG Lifecycle (Beyond Chunk-Embed-Search)

If your mental model of RAG is "chunk → embed → search → LLM," you're missing about 80% of what actually makes a RAG system production-ready. Here's a practical checklist across all 10 lifecycles I ran into while building one. Full technical breakdown with diagrams is on Hashnode (linked above) — t...

Tanmay 4 days ago

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DEV Community · Technology

Understanding the Git Workflow: Working Directory, Staging, Commit, and Push

The first time we were introduced to Git, we really didn't know where our code was going to be saved until I learned that Git is part of a control system. It keeps track of changes made to files in a project so you can: track what changed, see previous versions of what you were working on to undo mi...

sam manox 4 days ago

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