Security on CTRL-Find

The dangers of using a random KMS license server

Fri, 07 Nov 2025 00:00:00 +0000

What are KMS licenses?

KMS stands for key management services, this is a service which you can run your own client activation tools for windows licenses. The license on the specified machine asks to validate against the KMS service to check “am i a valid license?”. Which the service reports “yep, your valid until x date”, the machine your using this on gets all the benifits of having a license. This a standard which is created by Microsoft for their licensing setup.

Always check and verify!

Mon, 24 Mar 2025 00:00:00 +0000

What is a checksum

A Checksum is a digital fingerprint of a file or code. Software creators and/or companies are creating these digital fingerprints for safety reasons. One of the most common usecases is checking if a downloaded file is changed by a third party. if the checksum is different from the one that the creators provided, it most likely has been corrupted or tampered with.

We dont need external programs or a website (where we need to upload a file) to give us a checksum of a file. It is fairly easy and shown down below in two categories: Windows and Linux(MacOS).

Create and check certificates

Wed, 01 Jan 2025 00:00:00 +0000

Linux/MacOS OpenSSL

MD5 modules

You can use MD5 module to check if key and cert are a keypair toghter.

1
2

openssl rsa -modulus -noout -in <name>.key| openssl md5
openssl x509 -modulus -noout -in <name>.crt| openssl md5

Check cert

`1`	`openssl x509 -in <name>.crt -text -noout`

Check CSR

`1`	`openssl req -in <name>.csr -noout -text`

Short monitoring

`1`	`openssl x509 -in <path>/<name>.crt -noout -checkend 3888000`