4 Things you should know about Bitcoin



In the past few years, you may have heard about Bitcoin, the digital currency. Bitcoin is a type of cryptocurrency, where the security and encryption implication is essential. Since its discovery in 2008, the price of Bitcoin has gone up sparking a lot of conversation. Even the great investors have debated on the legitimacy and relevance of this new form of currency. The discussions have left us with more thoughts to review. However, those are opinions, and while useful, it is critical to know the facts. Here are four things you should know about Bitcoin.

1. What is Bitcoin?

As discussed earlier, Bitcoin is an encrypted digital currency, which is also known as a cryptocurrency. This currency is a global payment system and is built on the idea of a technology called blockchain. The technology is a virtue ledger that that keeps track of every transaction. No one controls Bitcoin, and the accounting is publicly distributed. In theory, anybody can track the operation and verify its legitimacy. Therefore, Bitcoin is neither a fraud nor a golden nugget. In the analogue world, physical money such as goods and paper money is limited by distance. In the digital world, we eliminate the constraint of distance and speed. However, banks control the rate. The crypto world eliminates both human and institutional constraints.

2. How is Bitcoin Created? 

Bitcoin is created through a mining process. Blockchain depends on a network of exchange that ensures the integrity of the transaction history by achieving consensus. The mining process starts with validating a transaction. Once certified, the exchangers need to race, using trial and error, to solve a mathematical puzzle that requires massive computing resources. The first computer to solve the math issue is rewarded with Bitcoins. Bitcoin mining serves two purposes: the process creates new coins and facilitates the processing of transactions in the network. The protocol of creating the currency is known as Proof of Work (PoW).

3. The value of Bitcoin. 

Only 21 million Bitcoins will ever be built, meaning that the currency is deflationary compared to paper money, which is inflationary. Bitcoin derives its value and security from the fact that you can prove the substantial computing power and electric energy used to solve a mathematical problem. In this process, you are protected against fraud and fake information. While PoW creates Bitcoin, a verifiable network backs and authenticates the currency. Anyone can create their own money, but you need a community to accept it for it to have value. Bitcoin has existed for eight years, and the global community has been transacting with the currency.

4. Where to use Bitcoin. 

You can use Bitcoin for both local and global payments. For example, Bitcoin Prediction market and Exchange is a global betting site that allows users to place bets using the currency.  Bitcoin provides a faster, more efficient and hassle-free way to exchange money. The cryptocurrency allows money transfers, peer-to-peer, without an intermediary like a bank. You can transfer Bitcoin at a faster rate at a lower fee compared to digital money.

Bitcoin was the first successful cryptocurrency on the blockchain that gave the world universal, virtual, and borderless money. Bitcoin defined the future of money since it is shaping the future of economies and transactions.  

How to recover deleted data in Windows, Android and mac



Our devices be it our PC or our smartphone, it stores a lot of important data . The only reason why our smartphone storage is going on increasing is that the amount of data that an user likes to store or number of apps that an user likes to use have increased. According to few online leaks iphone 8 is going to have 512 GB of storage. Yes you heard it right.

Now coming back to the topic, most of the time we accidentally delete our file and later realize how important that file was for us. Or sometime due to disk failure in PC or some software updates in andriod device we end up loosing our files. Even though Windows may not be able to see a file you accidentally deleted , it’s usually possible that the data could still be there and able to be retrieved.

In this post we will see how we can recover permanently deleted files from Windows, Amc and android.

Recover permanently deleted files in Windows 

Recuva Software

It can recover files that have been deleted accidentally. It supports image, audio, documents files and even emails. It scans the hard drive, find the file and copy it to flash media.


  • Download the free version of Recuva Software.
  • After finishing the installation of Recuva software, a quick launch file displays on the desktop. Click on that icon to Run and start the file.
  • You will get different file types like Music files, Documents, Video files, Images, all files, etc.
  • You can choose a specific file or Select ‘All Files’ so that you can recover any type of deleted file.


Recover permanently deleted files in Mac 

Recoverying deleted files in MAc is as easy as recovering in windows. For mac use this mac data recovery EaseUS Data Recovery Wizard for Mac

EaseUS free data recovery software recovers deleted, formatted and even inaccessible files for Mac


  • Restore lost or deleted document, photo, video, audio, email and other types of files
  • Save files from Mac notebook, Mac desktop, hard drive, SSD, USB drive, memory card, SD card, CF card, digital camera, iPod, MP3/MP4 player, etc.




Recover permanently deleted files in Android

These days we store most of our important files such as photos, documents etc in our phone so if by mistake we loose these data we might have to face a lot of problems.


If you delete the data accidentally, the first thing you need to do is to stop using your device and try to recover lost files from Android as soon as possible, or it may have a higher risk to be overwritten and you are not able to get the lost data back anymore.

There are various tools available for data recovery in android you can use any one of them.

The Android Photo Recovery program could assist you to recover not only photos and videos, but also SMS text messages, contacts, call history and more from Android phone or tablet.



  • Install the program on your computer and run it, you will be asked to connect your Android device to PC via USB.
  • After connecting your Android to the computer, now you should enable USB debugging
  • Start Scanning Your Android for Deleted Files
  • Then click on the green button "Start" to analyze your Android data.


When you see the window below, it is time for you moving to your Android device again, tap on the "Allow" icon, then turn back to the computer and click on the "Start" button to continue.

And then you can recover your deleted files.


Even though you won't be able to recover all your files but you can recover most of the files. I hope it helps you. Do let me know if you have any doubt



Programming languages that you should learn to be a Hacker



I often get this question. Many people ask me what are the programming languages that are needed to be a hacker. Well, to be a hacker you should know many programming languages and skills since the various applications and websites which you’ll exploit are programmed in different programming languages.

A hacker is a person who finds the vulnerabilities in a computer program or a computer network and then exploits them by using one of these programming languages to write an exploit that addresses a particular vulnerability

Here follow three hacking domains and the languages you must learn to master them.

1. Web Hacking :


Web hacking is one of the most popular domains in the hacking world. To do web hacking you need to understand the languages that are used to code a website like; JavaScript, HTML, PHP & MySQL.

The majority of websites are built by using these languages. 

So for this domain you’ll need to learn:

    HTML.
    JavaScript
    PHP
    SQL

2. Operating Systems Hacking & Exploits Writing :


An exploit is a piece of software code written to take advantage of bugs (exploiting a vulnerability); it’s an application or software.

Exploits consist of a payload and a piece of code to inject the payload into a vulnerable application. The main purpose is to get access to the system in order to control it.

So for this domain you’ll need to learn:

    C.
    C++.
    Python.
    Perl.
    Ruby.

3. Reverse Engineering :-


Reverse engineering is taking apart an object to see how it works in order to duplicate or enhance the object. The practice, taken from older industries, is now frequently used on computer hardware and software.

Software reverse engineering (as black-hat hackers and crackers do) involves reversing a program’s machine code back into the source code that it was written in using programming language statements.

For this domain you need to learn:
    C.
    C++.
    C#.
    VB.
    Python.
    Perl.
    Ruby.
    JavaScript.
    PHP.
    Java.
    Delphi.
    ObjectiveC.
    ErLang.
    Go Lang.
    SQL

 So these are the programming languages that are used by hackers for various purposes. If you are beginners then you should first start with Web Hacking as it is easy to start with and you get a good platform to try out your skills.

Saving Google Hangout Calls on a PC with Movavi Screen Capture



Ever since Google consolidated their various messaging services and into a single platform, it has definitely proven to be a hit. Today Google Hangout boasts the ability to communicate via instant messaging, SMS, or even VoIP and video calls. Because it is so versatile, you will have the choice of being able to place calls or send messages in exactly the way that you prefer.

The only problem with Google Hangout is that any calls that you place won’t be saved. For casual conversations that may not be an issue, but if you’re conducting business calls, interviews, or important discussions then it often helps to have some record of them.

If you want to record Google Hangout sessions all you need is a screen recorder such as Movavi Screen Capture. It will enable you to record your screen, so you can capture the interview and save it on your PC as a video. To pull that off, all you need to do are follow these steps:

  1. Launch Movavi Screen Capture.
  2. Click and drag the mouse cursor to draw a frame encompassing the Google Hangout call that you want to record.
  3. Make sure both the ‘System Audio’ and ‘Microphone’ icons are highlighted and click on them once if not, so that both incoming and outgoing audio will be recorded.
  4. Click ‘REC’ as the call is about to begin to start recording after a 5 second delay.
  5. Click ‘Stop’ when the call is done, then ‘Save as’ to save it.


Make no mistake, Movavi Screen Capture will give you full control over all the recording parameters and let you set the frame rate, choose to capture keyboard and mouse actions, or even schedule the recording itself to automatically start and stop at a particular time or after a certain duration. As you save your video you will even notice a number of built-in presets that will let you optimize your video for various devices and platform.

Before saving your video, Movavi Screen Capture will let you trim out any segments that aren’t necessary, which may be helpful to get rid of footage that was inadvertently recorded at the start or end of the call. All you need to do is position the marker at the appropriate point then use the ‘scissors’ icon to split the video, then select the segment you want to remove and click the ‘trash can’ icon.

All said and done Movavi Screen Capture should let you easily record calls from Google Hangout. By doing so, you can ensure that you can keep track of your calls and save important ones for future reference.

NoobSecToolkit V3 – A Security Students Playground



It is important to learn how to do things manually but tools saves our time. NoobSecToolkit is a Python Based Tool kit that brings together powerful security and anonymity tools and scripts with predefined security configurations and modifications. Making it very simple for students to get started with offensive security!


This third release of the Toolkit comes included with the following options:

Toolkit Options:


  • (sqli)SQL Injector
  • (vulscan) Vulnerability Scanner
  • (dinfo) Gather Basic Domain Info
  • (apf) Admin Page Finder
  • (discover) Information Harvester
  • (hashtype) Identify Hash Type
  • (hexconv) Hex encoder and decoder!
  • (converters) Web Converters
  • (dping) DOS/Ping Target For 1,000 Seconds
  • (stegattack) Steghide Dictionary Attacker
  • (steghide) Install, Learn and Use Steghide
  • (uihanalysis) Intrusion Analysis (URL,IP,HASH)
  • *Options For Deploying an SSH Backdoor (COMING SOON)
  • (osint) aids in the process of information gathering
  • (toolbox) Extra Set of Tools
This tool kit also have various Security options.

Security Options:


  • (macspoof) Spoof Mac Address
  • (itor) install Tor
  • (stor) Start Tor
  • (tors) Check Tor Status
  • (vpn) VPN Launcher (COMING SOON)
  • (encdns) Encrypt DNS
  • (quit) – (home) – (clear)-(update)






The Kit  Features scripts for all sorts of tasks including:
  • Vulnerability Scanner
  • Sql Injector
  • Domain Info
  • DNS Encryption
  • Admin Page Finder
  • VPN Downloader (Provider is DOWN) Tor Installer
  •  Mac Address Spoofing

 Install Instructions

The installation process is very easy and straight forward. You need to do the following to install it.

(1) CTRL + ALT + T (Open Terminal)
(2) git clone https://github.com/krintoxi/NoobSec-Toolkit.git
(3) cd NoobSecToolkit/NoobSec-Toolkit/
(4) python NSToolkit.py

9 Coolest Hidden Firefox Settings You Should Know




Firefox is highly attractive and easily customizable browser. It provides you excellent security and privacy. It also offers plenty of settings that provide you most beautiful customized experience. You must be aware of all the general settings that you can simply access in the settings menu. But, there are also many advanced settings which you can locate on specific web pages which use the “about” protocol. Here is a list of 9 advanced hidden Firefox settings that will be very useful to you

1.    Perform DNS Lookup

In-house DNS lookup – finding the IP address of a domain – can easily be performed in Firefox. You have to simply type “about: networking” in the URL bar and then press enter. The next page will appear on your screen. On this page, there will be a sidebar menu. The last option of the sidebar menu will be “DNS lookup”; click this option. There would appear a search bar and you need to enter Domain name and then press resolve; all the IP addresses will appear on the screen.



2.    Block Auto-Refresh

There are many addresses that come with Refresh HTTP headers that keep on refreshing the pages at regular intervals. If you want to stop pages being refreshed automatically, you can go to “about: prefrences#advanced”. Here you will see the main tab “General” and in its subcategory, that is “Accessibility”, check the box “warn me when websites try to redirect or reload the page”.



3.    Search as You Type

Sometimes people have some vague idea of what they are searching so in that case they certainly need some suggestions and threads. In Firefox you can press “Ctrl+F” which will open an in-page search box, and it will help you search a thread.

If you are tired of pressing key combos all the time and want your search engine to start searching as you start typing, all you have to do is go to address “about: prefrences#advanced” and access the subcategory “Accessibility” in the “General” menu. Here, check the box “search for text when I start typing”. From now onwards, whenever you will type, the Firefox will keep on searching automatically.

4.    Assigning a Different Function to Backspace Key

If you are afraid that your friend or anybody else who is likely to use your computer will access all your history by pressing Backspace key. You can change the functions of Backspace key, like when assigned, the Backspace key will scroll up the page and by pressing Shift + Backspace, it will scroll down the page. It is also possible that you give Backspace no function at all.

Simply go the address “about: config” and type “browser.backspace_action” in the search menu. The following page will show the default value of the browser setting which is 0. Double-click on it and change it to 1 for scrolling action and 2 for removing all the actions.

5.    Move Around With Cursor Keys

If you want to read a long article or a story online and you want to use the cursor for in-text navigation, you can do it in Firefox. Just go to page “about: preferences#advanced” and go to “Accessibility” option and check “always use the cursor keys to navigate within pages. Apart from default arrow cursor, a blinking text cursor will also appear on the wall which you can control with the help of arrow keys.

6.    Paste on Middle Click

If you remain busy all day long doing work on your computer which involves some copy-pasting on web pages, and you are tired of just clicking again and again to paste, you can get maximum benefit from this feature. If your mouse has a middle button, you can assign it to paste text from your clipboard to the web pages.

Go to page “about: config” and search “middlemouse.paste”. The default value will appear as false; to change it simply double-click on it and change the option from false to true.

7.    Change Default Colors

You can change the background, text, and color of different links in your Firefox browser. Simply go to the address “about:prefrences#content” and then select the “color” option in the main category of “Fonts and Colors”. Here you can choose the color of your own choice.

8.    Filter Awesome Bar Links

Whenever you start typing in the URL bar, Firefox gives you suggestions. These suggestions are based on your current history of webpages. You can filter these suggestions by typing some special characters into the location bar before you start typing the address. Here is a list of these special characters

# – Match page title
@ – Match URL
* – Match only to links in bookmarks
^ – Match only to links in history
+ – Match only to links that are tagged
% – Match only to links that are open currently
9.    Auto-Export Bookmarks in HTML

If you want Firefox to save automatically all the bookmarks in HTML format, making a list of links, then go to address “about: config”, and type “browser.bookmark.autoExportHTML” and then by double clicking change the false value to true.

After resetting your browser, you will find a file named “bookmarks.html” in your profile folder with all the links in it. From now on whenever you exit the browser, your bookmark list will be updated automatically. It is also possible that instead of restarting Firefox, you will have to restart your whole system for the changed effects.

This guest post is written by Lisa Myers, who works at Rebateszone. She is a software engineer by profession.