Notes on generating QR codes for print: error correction, logo holes and quiet zones
I work on sellphotos.online , where this was originally published. Every event on sellphotos.online gets a QR code. Photographers print it on posters, notice bo…
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I work on sellphotos.online , where this was originally published. Every event on sellphotos.online gets a QR code. Photographers print it on posters, notice bo…
NRF expects $1.013 trillion in 2026 holiday sales , while its latest research says fraud continues shifting across digital channels. The controversial takeaway:…
I work on sellphotos.online , where this was originally published. A watermark tool that uploads your photos to a server asks photographers to hand over the ver…
Adding an artificial intelligence assistant to a business website sounds like a modern upgrade. With a few clicks or a short script, you can deploy a conversati…
WHOIS is on its way out. For generic domains like .com, .net and .org, ICANN now requires registries and registrars to answer over RDAP , the Registration Data …

Every favicon guide gives you the same list of files. I built the set from a real 716-byte logo to see the sizes, and found the one check most guides skip. TL;D…
Your app has its first few paying customers: one in Germany, one in the US, one in India. Then somebody asks for an invoice with their VAT number on it, and you…
When several websites share a WAF, an attack event needs context: which hostname received the request, which public port handled it, and which application was b…
An attack list becomes more useful when you can connect each event to the public application endpoint it concerns. A hostname alone may be insufficient when an …
You installed an SSL certificate, your site loads over HTTPS, and the padlock shows. That should be the end of the story — but it isn't. The first time a visito…
Testing a web application firewall requires more than sending a suspicious URL and seeing an error. You need to confirm that traffic reaches the firewall, estab…
A blocked request is useful evidence only when you know which component blocked it. When testing path traversal and XML External Entity (XXE) requests, placemen…

Every day, developers and knowledge workers take screenshots of error logs, dashboards, billing pages, or Slack threads and paste them directly into ChatGPT, Cl…
I used to think that security was something only big enterprises needed to worry about. "Who's going to hack my little side project?" I'd tell myself. "I'm just…
AI Layoffs 2026: Which Jobs Are Actually Being Cut — and Which Ones Are Hiring By Shakeel Ahmed — AI Growth Lab · November 9, 2026 Nearly 200,000 tech workers h…
A publishing request can succeed even when your application never receives the response. If a worker treats that timeout as a failure and immediately repeats th…
Discovery of Designated Resolvers needs validation before automation DNS clients often know only the IP address of a resolver. Discovery of Designated Resolvers…

🌐 Linux Free Masterclass (Episode 11): Users & Groups (useradd, groupadd, and permissions setup) How do enterprise servers handle multiple system operators secu…
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Parse success is a terrible health signal, and I keep relearning that lesson the expensive way. My extraction step reported a clean parse for every record in th…