Self-Taught Developer Turns Three Beginner Python Scripts Into a Windows Desktop App

·1 views

A self-taught developer began learning cybersecurity by writing three simple Python scripts: a network connection monitor, a port scanner, and a system snapshot reporter. The original scripts contained bugs, such as a syntax error that stopped the monitor from running and a scanner that could not distinguish closed ports from open ones. The developer rewrote them and combined them into a single Tkinter-based app called QuantumCat SOC Toolkit, which adds an AI-assisted triage tab using a local Ollama model. The app ships as a Windows installer and a Linux package, with the goal of avoiding terminal setup for users. It is sold for $12 as a learning and triage tool, with its source code included.

Read the full story at DEV Community

This is an AI-generated summary. ShortSingh links to the original source for the complete article.

Discussion (0)

Adjusting Image Brightness, Contrast and Saturation in the Browser Without Libraries

CSS filters can handle basic visual effects, but pixel-level control requires the Canvas API and direct pixel manipulation. The article shows how to extract image data from a file using a canvas element. It explains per-channel brightness changes, the conversion of RGB values to HSL for saturation adjustments, and sharpness via a convolution kernel. It also notes that processing a large 4000×3000 image takes about 200ms, so previews can run at quarter resolution with full resolution reserved for download.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

Six Common Causes of GBase 8s oninit Startup Failures and How to Diagnose Them

A guide explains why the GBase Database (GBase 8s) instance may fail to start when oninit -ivy is run, and suggests checking the environment before reinstalling. The six common causes covered include unset or incorrect ONCONFIG settings, port conflicts, directory permission problems, shared memory and system resource limits, and full disks. It also flags a missing or misconfigured sqlhosts file, which mainly affects client connectivity. For each cause, the article offers Linux commands to investigate, along with cautions against blindly killing processes, applying arbitrary memory values, or deleting files.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

Directories Are Crowding Out Agency Pages in Search Results for Agency Queries

A live check of Google results for "content marketing agency" found seven of nine first-page results were listicles and directories rather than agency sites. Only two results were agencies' own pages, both regional service pages. The author argues buyers now find agencies through intermediaries, so agencies must compete to be listed. He recommends checking how many page-one results are directories, confirming that money pages are indexed in Search Console, and adding a GA4 segment for AI-referred traffic. The post comes from the author's own company, which builds a marketing-data tool, and he notes the same checks work with any analytics stack.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

Five Common Causes of GBase 8s Connection Failures After Installation

A GBase Database (GBase 8s) instance can be running yet still refuse dbaccess or remote client connections. The guide lists five frequent culprits to check before reinstalling: sqlhosts misconfiguration, firewall restrictions, port conflicts, server name mismatches, and client connection settings. A typical sign is that local connections succeed while remote ones fail, often because the sqlhosts entry uses localhost or 127.0.0.1 instead of a reachable address. Administrators are advised to verify host addresses, test port reachability, and identify any process already using the database port without disabling firewalls or stopping unrelated services. The article recommends confirming server names and client configuration files before making changes.

0 comments Read more at DEV Community