Databases are like religion. Everyone believe to withhold the ultimate best solutions… These ordered collection of data that are in the core almost all (if not all) complex systems. Even Simple website like this, have thousands of entries in a sql like database, and they never creates problems, until … one rainy day they do became slow, unresponsive, resource hungry… and that is where the pain start. Today I will give some hint on how to try to optimize a MongoDB database, by looking at its stats(). Continue reading “MongoDB optimization”
Bit Coin Wallet Collider
Ahh BitCoins! Welcome to the world of crypto currencies, where everything is decentralized and where making money is as easy as find a solution to a crypto-problem… Continue reading “Bit Coin Wallet Collider”
PC boot process – Extra: TPM with Luks / Bitlocker
In this quick article I want to extend the previous article on booting process and discuss few missing technologies that can play some role in the startup process. Those are not strictly required to your PC to work, but you may are already using them for example if you enabled encryption. Continue reading “PC boot process – Extra: TPM with Luks / Bitlocker”
PC boot process – Compatibility mode and secure boot
This is the last article of the “PC booting process” series and i want to quickly present few missing concepts that you may incur related to this topic. Again, my task is not to make you an expert, but just to give you a good understanding on what is happening when you push your “on button” on your pc. So let’s start from where we left… Continue reading “PC boot process – Compatibility mode and secure boot”
PC boot process – UEFI with GPT
In the previous article, I presented the boot process of BIOS based system with MBR disk. Today we will move forward and we will see the changes introduced with UEFI and GPT disks. I also have another article in plan where I will discuss mixed versions, secure boot and TPM. Anyway.. Let’s continue from where we left. Continue reading “PC boot process – UEFI with GPT”
PC boot process – BIOS with MBR
Aahhh the PC boot process! This magic sequence that transform your pc from a useless piece of metal and plastic in a fastastic machine capable (in the right hands) of opening any door around the world! Have you have wondered how this happen? well in this article (and in the next one) I want to explain in details how the PC boot process works. In particular we will start from MBR (still used in some older system).. and in the next we will move to UEFI. Continue reading “PC boot process – BIOS with MBR”
Hardware hacks and SuperMicro motherboards
If you follow up the security news, have definitely heard about the latest hack where SuperMicro was involved. So lets see what it happened there… Continue reading “Hardware hacks and SuperMicro motherboards”
Base64 and “echo” command
As we saw in the previous post, secrets in Kubernetes are passed and stored in base64 form. However when i was trying to do so, I run in a lot of problems, such as not escaped characters, wrong username, wrong password ,etc. At the end I found out the reason and I think is nice to report it in this quick post. So, lets see… Continue reading “Base64 and “echo” command”
Secrets in Kubernetes
Kubernetes is a great orchestration tool. It allows to deploy and easily manage dockerized applications and be able to scale them properly. There are many tutorials on how to set up your own cluster or use one of the managed ones in any cloud provider. But in this post i want to focus on the secrets objects.
Continue reading “Secrets in Kubernetes”
Miniaturized Automatic WiFi attacking device with 2 operative modes…
I want to continue the discussion about the ESP12 that i started last time… Short resume: I found a ESP8266 wifi module and I accidentally discovered that can be used to send free wifi packages. This was enough to fully catch my attention and try to do some cool stuffs with it… Continue reading “Miniaturized Automatic WiFi attacking device with 2 operative modes…”