Blogs

When you have many EC2 instances, you may forget to stop instances that you are not using. If you keep running the instances that aren't...

What is goacl The goacl is a CLI tool written in Golang. You can view a list of AWS security groups and add rules for specific groups....

In this article, I’m going to introduce you to the differences between Wasabi (Hot cloud storage) and Amazon S3 (AWS’s object storage)....

What is Wireshark？ It is one of the most famous necessary tools for network engineers. It supports Windows and macOS, and basically...

What is tfenv? The tfenv is a tool that’s for managing Terraform versions with CLI. You may have noticed the similarity in the name. The...

Many of you may use “ll” instead of the “ls” command. In this article, I’m going to explain what “ll” is and what you should know about...

What are constructors? A constructor is a method that is always executed when a class is instantiated (made into an object). An usual...

Have you experienced the MySQL slow.log file that has been accumulating for some time? Don’t you worry, you can use log rotation in this...

[WordPress WooCommerce Checkout Field Manager Plugin](versions 18.0 and older) Vulnerability to Arbitrary File Upload Importance...

[WordPress Webmention Plugin](versions 4.0.8 and older) Vulnerability to Cross-Site Scripting (XSS) Importance (CVSS3.0) ★★★★★★★☆☆☆ 7.1/...

When you want to install an old version of MySQL, but there’s no repository on the official site, you can do these steps to install it....

Hello! The “uptime” command is one of the most common commands I use. This command is used to check the system uptime of Linux-based OS....

[WordPress ProfileGrid Plugin](versions 5.3.1 and older) Vulnerability to Broken Access Control Importance (CVSS3.0) ★★★★★★★☆☆☆ 7.1/ 10　...

[WordPress Dokan Plugin](versions 3.7.12 and older) Vulnerability to SQL Injection Importance (CVSS3.0) ★★★★★★★☆☆☆ 7.1 / 10 - High...

[WordPress Instant Images Plugin](versions 5.1.0.1 and older) Vulnerability to Server-Side Request Forgery (SSRF) Importance (CVSS3.0)...

[WordPress Easy Testimonial Slider and Form Plugin](versions 1.0.15 and older) Vulnerability to Cross-Site Scripting (XSS) Importance...

[WordPress Auto Featured Image (Auto Post Thumbnail) Plugin](versions 3.9.16 and older) Vulnerable to Arbitrary File Upload Importance...

[WordPress Auto Featured Image (Auto Post Thumbnail) Plugin](versions 3.9.16 and older) Vulnerability to Arbitrary File Upload Importance...

[WordPress Leyka Plugin](versions 3.29.2 and older) Vulnerability to Cross-Site Scripting (XSS) Importance (CVSS3.0) ★★★★★★★☆☆☆ 7.1/ 10　...

[WordPress Manage Upload Limit Plugin](versions 1.0.4 and older) Vulnerability to Cross-Site Scripting (XSS) Importance (CVSS3.0)...