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.

New Entrophy Tool
By: Sean Mancini
January 24, 2018

I have posted before about the importance of a truly random number generator. I created a very simple tool that I am still building. It takes physical sources of entropy and other software sources of randomness and produces hashes and random numbers that can be used for many different applications.My goal is to make this as simple as possible - no ...

Bitcoin and Cyber Security: Digital Frenemies
By: Olivia
January 23, 2018

It’s no secret that cryptocurrency has been taking the world by storm, with fast food chains leveraging Bitcoin as part of marketing campaigns to attract customers. Just this week, KFC unveiled the ‘Bitcoin Bucket’ in Canada, which sold out almost instantly. This ploy, while a clever tactic, points at the pervasiveness of the growing cryptocurrency trend, which ...

DHCP (Dynamic Host Configuration Protocol)
By: D3f3nd3r
January 23, 2018

DHCP (Dynamic Host Configuration Protocol) in Windows Server Environment It is a protocol used to provide IP addresses automatically to clients. DHCP server uses port no. 67and DHCP client uses port no.68. It is used in workgroup and domain as well. ...

Partitions of Active Directory
By: D3f3nd3r
January 22, 2018

There are four partitions in an active directory: SCHEMA PARTITIONIt is the place where domain controller stores the information’s of objects and their attributes by the help of schema master role. DOMAIN PARTITIONIt is the place of active directory database where the information’s of domains will be stored with the help of domain ...

Why Do You Need a VPN?
By: David Balaban
January 21, 2018

Virtual private networks, or VPN are in high demand now. More and more people access their confidential data using public networks. Therefore, the threat of theft of this data has substantially increased. Here's what you need to know about it. What does the VPN do? Virtual private networks provide ...

How to Evade AV with OWASP-ZSC - Part 1
By: mkrishna
January 20, 2018

Among the tools available to create shell-code capable of going undetected by  Anti-Virus (AV) software, OWASP-ZSC ( Z ero-day S hell C ode) may be the most versatile. Shellcode is basically instructions  that executed when the code is injected into a running application such SMB and other vulnerable services and applications. Buffer overflows are  most often ...

Tracking IP info with its Metadata
By: Shaquib Izhar
January 19, 2018

  What is Metadata Metadata provide information about other data. It is simply a description of data. Metadata contain some elements described below : Who created it and when Who last modified it and when Tags and its categories ...

Error Based Injection
By: D3f3nd3r
January 18, 2018

Error Based Injection Error based injection mainly concentrated on Hacking Microsoft powered technologies like asp and aspx. Error based injection works on MS-SQL database and is bit different from the previous attack that is Union Based injection deployed on My-SQL database.• Here Database will be Ms-Sql Database:MY-SQL : PHPMS-SQL :  .asp or .aspx Difference between Union and Error ...

Audit in Action: Your Blueprint to a Unified Security Approach
By: Olivia
January 17, 2018

We’re pleased to be partnering with Cisco for this post. Scroll down to see a chance to win! Only Fortune 100s need to worry about cybersecurity, right? Unfortunately, this is a mindset that many individuals, small business owners, and even corporations believed. We now know that it simply isn’t the case. All ...

Top IT Certifications: Must Do in 2018
By: dhananjaykumar61
January 17, 2018

What makes you valuable in this highly competitive IT industry? An Experience, experience with knowledge and what else?   With these two you need to be tech-trained and have one of the top IT certifications. Acquiring a globally recognized professional certification is ...