John the Ripper Pt. 2


Authentication hashes are stored and kept by operating systems. Really, they are just hashed values of passwords. It might be possible to brute force these, but oftentimes you would need some sort of privileged permissions in order to obtain them, so it is somewhat of a more difficult task.

John the Ripper Pt.1


John The Ripper, or John for short, is one of the most well known password and hash cracking tools out there. John is extremely versatile, most importantly, it is extremely fast, with a really big range of compatible types of hashes, not just the most common ones like SHA1, SHA256, MD5, etc. It is also worth mentioning that John will work on all of the three most common operating systems – Windows, MacOS, and Linux-based distros. For Windows, there’s also the Hash Suite, developed by a John the Ripper Contributor. 


Hashing, most simply put, is the act of taking a piece of data (of any length) and representing it in another shape, that is of fixed length. We do so by passing our original data through an algorithm – hashing algorithm. Some more popular examples are: NTLM, MD4, SHA512.

As an example, take my name  – acephale as an input string and pass it through a SHA256 algorithm, and we get the following string of characters:

Vicarius Unlocks Nmap for Vulnerability Remediation

Vicarius Unlocks Nmap for Vulnerability Remediation

Nmap Advanced Uses Pt.4: NSE


Now that we have covered some of the more important features of Nmap, we would like to talk about one of the most, if not the most, important features: NSE, short for Nmap Scripting Engine. Firstly, let’s mention the fact that the set of NSE scripts is quite diverse and constantly growing. NSE was designed to be flexible, specifically for network discovery, more sophisticated version detection, backdoor detection, vulnerability detection and exploitation.

In: #scanning

Nmap Advanced Uses Pt.3: Firewall Evasion


Today, firewalls are an essential part of almost every IT infrastructure and are being deployed in a myriad of shapes and forms. They usually focus on layers 3 and 4 of the OSI Model (occasionally layer 2). Next-generation Firewalls (NGFW) can also cover layers 5, 6, and 7. With more layers covered, we gain more control, but also spend more computing power.

Cybersecurity takes a Community: 10 Popular Cybersecurity Communities to Join

As the saying goes, "no man is an island." This statement holds in today's cybersecurity landscape.

Mac Patching Best Practices

As vulnerabilities and threats become more sophisticated, having a reliable and automated Mac patch management solution for your organization's devices is essential. This is important if you are using a lot of custom applications that may be hard to update. 

In: #patching

Nmap Advanced Uses Pt.2


In this article we will look further into some of the options that Nmap offers. Since we have looked into the Null, Xmas, and FIN scans, we will continue down this path of port scanning techniques, and for this article we will focus on ACK Scan (-sA),  Window Scan (-sW), and Maimon Scan (-sM). 

In: #security

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