Types Of Passive And Active Security Attacks Essay

4) Decoding. The receiver must be able to translate the message so they understand its contents or instruction.

It is operating on best effort delivery model, i.e. it does not guarantee delivery, nor does it assure proper sequencing or avoidance of duplicate delivery. These aspects, including data integrity, are addressed by an upper layer transport protocol, such as the Transmission

d) The information is acquired on the data bus and send it to TDO. (Alghafli, Jones, and Martin. 2012).

In this section, important functions used to send and get requests to and from the traffic

Encryption is the conversion of electronic data into another form, called cipher text, which cannot be easily understood by anyone except authorized parties. The primary purpose of encryption is to protect the confidentiality of digital data stored on computer systems or transmitted via the Internet or other computer networks. Modern encryption algorithms play

First of all, phishing attack is a kind of social engineering, where the attacker try to find out your login name and password simply by requesting. They usually pretends to be an authority figure, such as banking system, with a sense of urgency (for example if you don’t send your password, your account could potentially be froze). It is like an impersonation and deceit.

This type of attack is any event that diminishes or eliminates a network’s capacity to perform its expected function. These attacks are launched against server resources

Denial of service – Denial of service or DOS is an attempt to make a machine or network unavailable to its users. The services that were available to the user wouldn’t be available anymore. Although the result of a DOS attack does not lead to data theft. However a great deal of time and money can cost the company. An example of a service being stopped is email, or can be a loss of network connectivity. There could be no access to shared storage and no one would be able to access the internet while the DOS attack.

Briefly explain the deencapsulation steps in the communication from host B receiving a message from Host A destined for an active application.

If a device does not know how to get to a destination, it sends data to this device.

flow between sender and receiver, and perform the overall error control to recover any lost data to protect

Most nations today fear terror attacks that include bombing use of reinforcements like machines guns and other firearms. This is because terror attacks most of the times leave many people dead and others disabled while others are left without families. However, there is another attack today in many nations that can be destructive like a terror attack and this is the cyber-attack and threats. Cyber-attacks can be responsible for large mass destructions by making all systems connected to cyber networks fail to work (Rhodes 20). An example is the Morris worm that affected the world cyber infrastructures and caused them to slow down to a position of being impractical. Therefore, as a result of these cyber-attacks resources are being established and designed to help counter the attacks.

The first concept covered is the transactional nature of communications. Transactional nature of communications essentially

Denial-of-service is an attack aimed to refuse access for legitimate users and disrupt service availability according to www.msdn.microsoft.com. This type of security threat according to www.tech.co.uk is rapidly increasing on the Internet due to open doors on Websites. By using the Internet, companies increase the risk of denial of service attack. Denial of service can also be caused by too many connected to a server at the same making run slow or unavailable to others. People who deliberately abuse a network server are often difficult to track down.

Distributed denial of service is hard to block. Due to much traffic, system could not tolerate the unacceptable requests from different machines. A single user is attacked from the number of attackers. The millions of requests force the computer to shut down. The main purpose of denial of service is to disturb business of specific organization. The normal work is effected such as make server unavailable to its regular users. A single blockage of an IP address could not stop the attack.