Digital Signatures and Certificates
The construction of the Digital Signature entails applying a hash function to the message by concatenation of the message with a known secret key and then applying a mathematical function which will produce a fixed length output known as the digest. More ...
NMAP (Network Mapper) Port Scanner
When hackers attempt to gain unauthorized access to a computer on the Internet the first things they do is look for open ports. NMAP is a free and open source port scanner that hackers can use to automate the process of finding open ports to attack. More ...
Avoid Hacks by Rogue Wireless Devices
Watch out for hacking from unauthorized routers and wireless clients that are attached to your network. By using NetStumbler or your client manager software, you can test for access points (APs) and ad-hoc devices that don't belong on your network. More ...
Multi-Layered Approach to Cyber Security
A multi-layered approach can be tailored to different levels of security. Not every asset needs to be completely secure; instead, only the most business critical assets, such as proprietary and confidential information, need be protected by the most restricted settings. More ...
Types of DoS (Denial of Service) Attacks
The methods used to launch a DoS (Denial of Service) attack can be divided into three essential categories: Flood attacks, Logic attacks, and Distributed Denial-of-Service (DDoS) attacks. Attackers may use each method to compromise or completely shut down an Internet server. More ...
Firewall Internet Security - The Basics of a Firewall
Enterprise companies today employ firewalls that inspect sessions between external and internal hosts and devices. The firewall filters traffic by examining the source and destination IP addresses, application port and protocol port before making a decision whether to permit or deny a session or specific traffic. More ...
Why Become a CISSP?
As a Certified Information Systems Security Professional (CISSP), you will be seen as a security professional of proven ability who has successfully met a predefined standard of knowledge and experience that is well understood and respected throughout the industry. More ...
Remote Access Authentication Protocols
A remote access authentication protocol is the method by which remote users will be authenticated when they log on the network. Some options are EAP, CHAP, and PAP, explined here. More ...
What is a Password Hash and Salt?
Never store a user's password as plain-text. A Hashing algorithm is similar to encryption. To increase the security of a hashed password, a random value called salt is added to the hash. More ...
Understanding the Dangers Your Systems Face
It's one thing to know generally that your systems are under fire from hackers around the world and malicious users around the office; it's another to understand specific attacks against your systems. This section discusses some well-known attacks but is by no means a comprehensive listing. More ...
What's the Difference Between Sniffing, Snooping, and Spoofing?
Network sniffing and snooping involve tapping into network traffic for the purpose extracting usernames, passwords, account numbers, and other information. Spoofing is when a hacker creates an email or a website that appears to genuine but is designed for the purpose extracting usernames, passwords, account numbers. More ...
Man in the Middle Attack
In a Man in the Middle (MIM) attack the hacker places eavesdropping equipment between the sending device and the receiving device. He intercepts the data, records it and possibly modifies it, then sends it on to the intended receiving device. More ...
Wireless Network Security
Before the IEEE completed the 802.11i standard the Wi-Fi Alliance released WPA. After the release of the IEEE 802.11i standard, the Wi-Fi Alliance released WPA2 which is compatible with both the 802.11i standard and WPA. More ...
