What actually stays private on Midnight! (A builder's mental model)
Intro Coming from the XRPL, the challenge for me has been grasping what actually stays hidden on a privacy chain and how they acomplish that. On a tra…
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Why I stopped copy-pasting JSON into online converters and built TypeMorph
Why I stopped copy-pasting JSON into online converters and built TypeMorph Every developer has done it. You grab a JSON response from an API, paste it…
Why I Built ToolNudge: A Privacy-First Collection of Browser-Based Utilities
Over the years, I've found myself repeatedly searching for small utility tools. JSON formatters. JWT decoders. Regex testers. QR code generators. Text…
rclone crypt: encrypt files client-side before they touch any cloud
If you want files encrypted before they ever reach a cloud provider — so the provider only ever sees ciphertext — rclone crypt is the simplest tool th…
Launched a free DSGVO compliance scanner — scanned 200+ sites, 73% had violations
Originally written for r/SideProject on Reddit — sharing here for the dev.to community. TL;DR: Built a free tool that scans websites for GDPR/DSGVO co…
Bulk Password Breach Check: Safe & Local Vault Auditing
Audit thousands of passwords against data breaches — completely in your browser with zero-knowledge privacy. Published: June 9, 2026 TL;DR Most bulk p…
Building for Indonesia? What UU PDP Actually Requires From Developers (a Practical Checklist)
If your product touches users in Indonesia, the country's Personal Data Protection Law — UU PDP, Law 27/2022 — is now fully in force. The two-year tra…
I Built a Free File Conversion Platform That Runs Entirely in Your Browser — No Uploads, No Tracking, No Login
I Built Free Browser-Based File Tools That Run Without Uploading Your Files Why I Built File Convert Factory Most online file converters require you t…
Architecting isolated workspaces with Kasm: hardened, egress-controlled, disposable
TL;DR: A hardened Kasm Workspace deployment where every research session runs in an isolated, egress-controlled, throwaway container. Four layers (ser…
ChatGPT's New Memory Doesn't Ask Permission First
On June 4, OpenAI rolled out Dreaming V3 to ChatGPT Plus and Pro users in the US. The pitch is simple: ChatGPT now remembers you properly. Not because…
WhatsApp says it caught new spyware attacks linked to NSO Group in violation of court order
The messaging giant announced that it disrupted a phishing campaign targeting its users with NSO’s spyware.
Top 5 Vulnerability Scanners in 2026: Beyond CVE Matching and False Positives
The vulnerability management landscape has changed dramatically in recent years. For a long time, vulnerability scanners focused on discovering servic…
Three Questions Every Zero-Knowledge Builder Gets Asked (And How I Answer Them)
Last week, a fellow builder working on a zero-knowledge financial tracker left a thoughtful comment on the Metamorphic Product Hunt page. He hit his f…
SaaS Calculator: a SaaS Calculator tool that never sees your data
Most online SaaS Calculator tools quietly send what you paste to a server. That's fine until it isn't — config blobs, tokens, and API responses are ex…
YAML Formatter: a YAML Formatter tool that never sees your data
Most online YAML Formatter tools quietly send what you paste to a server. That's fine until it isn't — config blobs, tokens, and API responses are exa…
JSON ↔ CSV: a JSON ↔ CSV tool that never sees your data
Most online JSON ↔ CSV tools quietly send what you paste to a server. That's fine until it isn't — config blobs, tokens, and API responses are exactly…
Why Windows Still Can't Open HEIC Files in 2026 (And What Actually Works)
The scenario is familiar: someone takes a photo on an iPhone, sends it to you over email or WhatsApp. You try to open it on Windows — a warning appear…
I built a fully anonymous, E2E-encrypted P2P messenger that runs entirely in the browser #webdev #privacy #javascript #cryptography
That's the whole relay. The operator genuinely cannot read messages — not because of policy, but because the math doesn't let them. The honest tradeof…
Удаляем фон и замазываем лица прямо в браузере: ONNX Runtime, MediaPipe и грабли Service Worker
TL;DR. Две нейросетевые задачи — удаление фона (ONNX Runtime Web + модель silueta) и замазывание лиц (MediaPipe Tasks Vision + BlazeFace) — запущены п…
Notes on Federated Learning and Differential Privacy
Notes on Federated Learning and Differential Privacy 2026-05-31 · privacy-preserving ML Working notes on building federated learning (FL) from scratch…
Test a DNS Leak in 2 Minutes: Complete Methodology + Per-OS Fixes (2026)
TL;DR Testing for a DNS leak takes 2 minutes: connect your VPN, open dnsleaktest.com and run the Extended Test, then check whether the DNS servers det…
How to not Lose $500M via API Bills: Run Private AI for 100 Engineers Under $1 Million
Last week a company nobody can name spent $500 million in a single month on Anthropic's Claude API. Not $500K. Not $5M. Half a billion dollars. In one…
Through the Looking Glass of Logs: Karachi Police, DuckDuckGo, and IPv6 Magic
Remember when I said reality turned out to be harsher? When you open the logs of a custom-built analytics package after a couple of days, you expect t…
How I Protected My Inbox from Spam Bots While Building Landing Pages
As developers, indie hackers, and solo founders, we launch numerous static sites, minimal landing pages, and open-source project documentation blocks.…
How Free Online Tools Survive Without Collecting Your Email
The question comes up every time someone recommends a free, no-account tool: "How does this even stay online? How are they paying for servers?" It's a…
HTML meta referrer: canonical reference
framework-html-meta-referrer.md Comprehensive reference for HTML <meta name="referrer"> , the page level referrer policy declaration. Covers the…
Training Data Provenance: The Manifest Diff That Explains the Hash
AI x Crypto Systems disclosure: this article was prepared with AI assistance as an editorial helper. The ideas, facts, code, sources, and conclusions …
The Kimwolf Bust Just Outed Android Webcams as Botnet Fodder — Here's the Question Every Repurposed-Phone Camera Setup Has to Answer
On May 22, 2026, the U.S. Department of Justice announced the arrest of a 23-year-old in Ottawa for allegedly running Kimwolf , a DDoS-for-hire botnet…
Building an E2EE Chat App in Flask - Part 1: Why Encryption Matters
Hey everyone! I'm building an encrypted chat application in Flask and documenting the journey. Here's Part 1. Why E2EE Matters Most messaging apps cla…
The Age of Accountable Agents: Building Trust in Your AI Automation
The Age of Accountable Agents: Building Trust in Your AI Automation\n\nThe air around AI feels different this "Long Hot A.I. Summer." Big tech is pour…