My findings after implementing the DNS query without any library. This domain name system is nicely tucked away in the network drawers, so you don’t even notice it. Nonetheless, it is used by everyone on the internet multiple times a day.

I decided to document my journey into this new field. Here is part one, talking about why and how I started.

I’m continuing the practice of reflecting on the year that passed.

After deploying my VPS and taking steps to secure it, I had the original SSH port (22) inactive. But it kept me curious about the default SSH activity going on there. How much brute forcing is happening on a publicly exposed server? I started experimenting with honeypots to find out more.

Ruby offers an easy way to benchmark the code. Here is some syntax for basic benchmarking.

The N+1 query problem is a common performance issue encountered in Rails applications.

There are two main threat actors for your VPS: bots and real people (manually testing access).

SQL injection opens the way to data manipulation and theft, but I recently discovered that it can be an attack vector enabling remote code execution (RCE). This highly critical vulnerability gives the attacker access to the target machine.

As a casual owner of a human brain, I tend to overlook my accomplishments and instead focus on the negatives. I am writing this annual review as an opportunity to reflect on my journey.

A remedy for trust issues with cloud providers.

Polyglot files captivated me while learning cybersecurity. Their clever ability to trick a server and the potential for high-severity attacks made me want to know more about them. Even though one might use various tools for creating them, I was curious how it is done at the byte level.