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.

Cryptography Part 1: A Quick Summary
By: bytezealot
February 1, 2017

Estimated reading time: 4 minutes Cryptography Part 1: A Quick Summary TOC: Cryptography in History Services Cryptography can Provide Confidentiality Symmetric Cryptography Asymmetric Cryptography ...

Super Fast Encryption (Linear Feedback Shift Register Sequences)
By: ProgrammerE
February 1, 2017

Estimated reading time: 2.5 minutes Use of cryptographic algorithms like Triple DES, AES, and Twofish is good for applications where you need high security and you can afford a slight delay. Credit card purchases, file transfers, and turn based games are good candidates for these kinds of algorithms. Real-time games, market data, and distributed computing needs ...

All The News Fit or Unfit to Print
By: rcubed
January 31, 2017

This is the fifth and final post in the series on “ How to be an Educated Consumer of Online Information .” I can hear you cheering now. I realize that this series may have seemed like I’ve veered off on a tangent. After all, what does any of this have to do with IT and cybersecurity? ...

TCP Reverse Shell Using Python
By: r00t_privilege
January 31, 2017

Estimated reading time: 1 minute This article is about creating a reverse shell session over TCP using Python Sockets. Let me explain what happens in a general sense.First, the server binds its IP address and a PORT to a socket [note that I implemented a fixed solution for other people whose routers change IPs whenever they ...

Beware of Internal Security Threats
By: Lawrence King
January 31, 2017

Estimated reading time: 4 minutes Are there any employees who work in their own little bubble in your organization where nobody else is aware of what they do, where they keep files or important documents? How much data do they have access to? Does anybody audit their access to the network, bank accounts or inventory? ...

Winter Phishing: Gmail Scams
By: Rachel Laura M
January 30, 2017

Scams! Some hackers are good at them. Hackers who create phishing schemes often create documents that are realistic and convincing enough to look legitimate; causing even some of the most technologically savvy users to fall for them. That is a "good" scam.Netflix was recently the target of such a scam. Unsuspecting users were sent a link via e-mail which ...

Video: Getting Information During Footprinting
By: ryan c
January 30, 2017

Background Information that we need during footprinting . In this post, I'll tell you how to get the background technology or services that a website is running. This will be helpful in gaining some information during the Information Gathering process and footprinting. How do you get the information you need ...

Let's "C" How This Goes Again - Part 2
By: jnox
January 30, 2017

Estimated reading time: 9 minutes Hello, fellow Cybrarians! Way back in December…umm…checks own page 12th - yeah I knew that - December 12th I wrote an article for C programming, an intro to C called ‘ Let’s “C” How this Goes: Programming Introduction to C ’. Recap from the previous article: Skip to new content ...

Error Based SQL Injection: Best practices and projects
By: Romansh Yadav
January 29, 2017

Estimated reading time: 3.5 minutes Hello Leaders,Today I'm going to talk about the second part of the SQL Injection article. First, I want to explain the purpose of Error-based SQL injection. Don't worry, it's very simple.RETRIEVING DATA FROM THE DATABASEToday, we mostly use SQL injection for bypassing the login form or gaining access into an ...

Getting Started with PS Tools
By: H5p
January 28, 2017

  Estimated reading time: 1 minute I found a really good toolset which may come in handy when it comes to doing things remotely. This may help admins and other IT staff that need to do things remotely.Download the PS tools, which can be found easily and downloaded from the internet. 1) PsExec The below command will give ...