0P3N Blog

Cybrary’s Open Blog is a user contributed cybersecurity knowledge base that brings together content highlighting the latest tools, exploits, technologies and insights in the industry.

A Brief History of Mobile Malware and How to Protect Your Apps
By: Dr. Michael J. Garbade
July 25, 2018

The digital space has, in recent times, experienced an increase in the number of threats that have led to fraudulent activities. Scammers and hackers usually prey on gullible individuals, swindling them of their hard-earned money as they make vendor payments or online investments. Sunil Kumar , who is an experienced cybersecurity analyst and currently teaches ...

What are Linux Runlevels?
By: Sean Mancini
July 24, 2018

Linux and Unix utilize runlevels to enable certain functionalities from single user mode to GUI mode.These runlevels cater to different needs for system administrators and for troubleshooting.You can set a default runlevel to, say, boot the CLI instead of the GUI. On servers, you generally would use Runlevel 3, which is the multi-user mode that only gives you access ...

Cryptocurrency Lesson 1: Introduction to Cryptocurrency, Bitcoin, and Blockchain
By: bjacharya
July 23, 2018

Hello and Namaste, Cybrarians. I am back with a new, exciting course series: Cryptocurrency . This is the first lesson of our course, and here, we are covering the following: Cryptocurrency Introduction Bitcoin Introduction  Blockchain Basics Cryptocurrency ...

Web Designer, Web Developer, UX Designer, and UI Designer: What’s the Difference?
By: Jessica
July 22, 2018

The Web has done a lot to transform the way we live over the years. It has changed the way that we work and communicate. Although many businesses still work with data in a hard-copy form, much of it is stored in online databases, with employees at various locations accessing it through centralized web portals. Instead of relying solely ...

What is Bluetooth?
By: Jessica
July 22, 2018

Have you ever been on your smartphone, gone to Settings, and seen a setting option that allows you to turn Bluetooth on or off, but you don’t exactly know what Bluetooth is? Maybe you’ve also wondered if it’s similar to Wi-Fi, and if it is, then why would you need it if you’re already using Wi-Fi? If you’ve had ...

Breaking Into Security Careers 2018
By: RonW123
July 22, 2018

Cybersecurity continues to be a hot career field with many job opportunities. This means more and more folks want to break into it. A common question I’m asked is, “How do I get a job in information security/cybersecurity?”  We continue seeing people who are interested, but they don’t know the steps it takes to start or ...

What Is Cloud Security Management? A Challenge For IT Growth
By: Ugra Narayan Pandey
July 21, 2018

Organizations are shifting their work on the cloud horizon to expand their businesses. While implementing and handling cloud-based projects, cloud security management comes to mind. It demands that firms determine and understand the challenges involved in the public network. Cloud information protection is quite similar to an on-premise data center’s security. The only difference between the ...

How to Prepare for the AWS-Certified Solutions Associate Certification
By: Vikrant Saran
July 19, 2018

Amazon Web Services dominates the cloud computing world today. Being a subsidiary of Amazon.com, it delivers cloud computing platforms for individuals, government, and companies on-demand for a paid subscription. Today, AWS technology is implemented at server farms across the globe. In order to master AWS technology, it's necessary to ...

RouterSploit Framework
By: Kevin Mark
July 18, 2018

About RouterSploit and How to Set It Up Hello, and welcome to another one of my tutorials here at Cybrary. Before you continue reading this, I must let you know that it is illegal to perform exploit attacks if you don't have permission or if you aren't the owner of the network upon which the attack is being ...

Interview Guide: Network Engineer
By: Thomas Callahan
July 18, 2018

Architecting Success: The Network Engineer Interview Network engineers are in high demand as companies push for faster, more comprehensive digital transformation across all aspects of IT. From the integration of mobile devices to managing the interaction between new, cloud-based services and legacy controls, network engineers play a critical role in developing the scope and scalability of enterprise networks. ...