This blog contains all my articles of various categories which I will separate in the future once a category becomes big. This blog along with other online contents are licensed under creative commons attribution customized sharealike (cc-by-sa) where I Fajar Purnama as the creator customized the ShareAlike (sa) license here where you are also allowed to sell my contents but with a condition that you must mention that the free and open version is available here.

Creating Strong Passwords

5 Apr 2020 1 minute read 0 comments 0fajarpurnama0

Why a strong password is needed? Simple answer: to prevent being hack (easy password can be hack using bruteforce method). For example

Simple Password Bruteforce Demonstration Using Hydra

4 Apr 2020 3 minute read 0 comments 0fajarpurnama0

Background Have you ever forgotten your pin for your baggage then search on Youtube? Generally they advice "set everything to 000, try to click the lock, turn to 001, try to click the lock again, keep doing this until 009, then try 010, try to click...

Having a Taste of Being a Hacker

31 Mar 2020 12 minute read 5 comments 0fajarpurnama0

0. Outline The world of a true hacker is a very complex but at the same time very exciting. The materials on hacking is very big, to us first hand knowledge of networking and programming is quite necessary. It's an unheard that you have to know about...

Simple Introduction to Computer Network and the Internet

23 Mar 2020 12 minute read 0 comments 0fajarpurnama0

0. Outline This topic would like to show you from afar what a computer network looks like. We won't show you deep inside because that's where things tends to get difficult, for example subnets, network traffic, protocols, etc. Simply we want to Intro...

Question Checklist Before You Buy Bitcoin

13 Mar 2020 2 minute read 0 comments 0fajarpurnama0

You May / Actually Highly Recommended Download a bitcoin wallet and note your public and private keys. Mine bitcoin. Participate in airdrops, faucets, giveaways, and other free stuffs. Become a merchant that accepts bitcoin. Have channels for excha...

Hacking Sethc and Office Trend USB Windows 7 When You Have Physical Access

11 Mar 2020 5 minute read 0 comments 0fajarpurnama0

1. Hack Administrative Access Windows 7 The PC was designed for the user to only have standard user account privilege (near guest account) where the user only have the right to read and execute certain data and application. Unlike administrator accou...

T-Phi Network (Star-Delta) Using Relays and Timer

10 Mar 2020 4 minute read 0 comments 0fajarpurnama0

1. Introduction In electric circuit star and delta circuit consist of 3 loads which in star circuit they are connected in form of a star while in delta circuit are connected in delta form as in Figure 1. Figure 1. Star and Delta Connection Diagram Th...

Chamber Room Using Thermocouple and Relay

9 Mar 2020 4 minute read 0 comments 0fajarpurnama0

1. Introduction A chamber room in this experiment is known as an automation circuit. It’s designed to keep the room temperature at a certain degree. This chamber room is chosen as one of the training for automation. Here we learned how to design our...

BTCBOX Crypto Exchange Japan

6 Mar 2020 1 minute read 0 comments 0fajarpurnama0

Invitation Campaign Use my code HNRCWSLFLF when registering at and we both get ¥500. Don't miss the chance especially if you are in Japan. How...

Learn and Earn on Coinbase: ~$50/hour

29 Feb 2020 1 minute read 0 comments 0fajarpurnama0

  LIMITED OFFER Coinbase is giving away coins for taking their free course. Join coinbase: Pass know your customer (KYC) / verify your identity by providing photo of your ID card such as passport and sign on...