v-masker: High-Performance Local Log Data Masking Tool

Before sharing production logs with third-party vendors or uploading them to code repositories, data masking is a critical step for compliance. v-masker is a high-performance local utility built for one purpose: redacting PII (Personally Identifiable Information) from your logs without the need for complex regex or internet connectivity.

Why choose v-masker?

#

• Local-First Security: Operates 100% offline. Unlike online tools, your raw logs (containing sensitive passwords, phone numbers, or tokens) never leave your machine.
• Massive File Support: Powered by a Go-based stream processing engine, v-masker can process a 2GB Nginx log file in seconds.
• Smart Detection: Built-in intelligent recognition for common PII patterns like mobile numbers, government IDs, emails, and structured JSON fields.
• Zero Configuration: No runtime environment required, no config files to write. It’s a single binary that works right out of the box.

Supported Masking Rules

#

• Communication: Mobile numbers (hiding middle digits) and Email addresses (obfuscating the prefix).
• Identity: 18-digit ID cards and SSN patterns (retaining only the head and tail).
• Networking: IPv4 addresses (masking the last two octets to protect network topology).
• Dev-Centric: Automatically scans JSON structures for keys like password, token, secret, and apiKey to hide their values.

How to Use

#

1. Method A (Easiest): Simply drag and drop your .log or .txt file onto the v-masker.exe icon.
2. Method B (CLI): Run v-masker access.log in your terminal. The tool will automatically generate access.log.masked.log.

Technical Specifications

#

• Core Engine: Golang (Optimized for High-Performance String Processing)
• Throughput: ~50MB - 100MB / second (depending on regex complexity)
• Memory Footprint: Consistently stays below 20MB, regardless of the input file size.

⬇️ Download v-masker.zip

#

Version: 1.0.0 | System: Windows/Linux/macOS (x64)