How A Network Can Be Attacked

You sure have heard before terms such as virus, worm, Trojan or rootkit when people discuss internet security. These names describe types of programs used by internet criminals or hackers to hack and take over computers and mobile devices. All of these different terms can be simply called malware.

For example, Conklin (2010) explains a 2003 attack known as the Slammer Worm: “It exploited a buffer-overflow vulnerability in computers running Microsoft’s SQL server or Microsoft SQL Server Desktop Engine… Within the first 24 hours of release, the worm had infected at least 120,000 hosts and caused network outages and the disruption of airline flights, elections, and ATMs. At its peak, Slammer-infected hosts were generating a reported 1TB of worm-related traffic every second… The problems it caused were a result of the massively overloaded networks, which could not sustain the traffic being generated by thousands of infected hosts. The worm sent its single packet to a specific UDP port, 1434” (p.6). By performing a ping sweep to see which computers on a network are live followed by a port scan to see which ports are open and what services are running on those machines, it would be very possible for a hacker or group of hackers to pull off an attack similar to the Slammer Worm. In fact, once a hacker has a way into the system and knows which vulnerabilities to exploit, there’s really no limit to the damage potential caused by the

A Virus is a piece of malicious code that has the intent to damage your system.

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

Rootkit – Rootkit is a software that is downloaded onto a computer to ide the compromised operating system. This can allow other viruses or malware to come and make it look like it’s a necessary file for the computer. Even if you use an anti-virus, it will look at it but will think it’s a necessary file for the computer. The longer the rootkit is installed the harder it is to undo the damages

Generally, the horse of Trojans is coded programs coded for the purpose of harming the computer devices which appears to be harm free, but when the code is executed by users, the data & file systems are corrupted leading to damaging the computer devices.

a type of virus that spreads itself, not only from file to file, but also from computer to computer. the primary difference between a virus and a worm is that a virus must attach to something. such as an executable file, in order to spread. worms do not need to attach to anything to spread and can tunnel themselves into computers.

Lanes or routes used by an attacker to gain access to the target (attack vectors), is to exploit existing vulnerabilities in the Rocky Summit University’s are:

Attackers attack the network by identifying a weak point in the network and create a network threat. There are four primary classes of threat: Unstructured Threats, Structured Threats, External threats and internal

Viruses and worms are malicious programs that self-replicate on computers or through computer systems without the user being cognizant. Worms are a series programs that repeat themselves from system to system minus the use of a host fie. Worms use methods to infiltrate remote computers and launch replicas of themselves like email messages or coping files to an accessible disk. A computer virus is a

Computer viruses are minute program which is “embedded inside an application or within a data file which can copy itself into another program“(Adams et al, 2008 ) for the sole determination of meddling with normal computer operations. The consequences may range from corruption and deletion of data; propagation of virus on to network and deployment through attachments through emails in order to further creating havoc to all associated computing devices.

One of the ways in which cyber criminals like to operate is by causing an interruption of service which can cause significant damage to all those effected. When a network comes to a screeching halt, so do all of the services that corporation or organization provides.

A computer virus is Program or a portion of the codes that enter into the computer to target vandalism and characterized by their ability to copy itself to many copies and their ability to move from place to place and from computer to computer, disappearances and contents cover.

Computer virus is a harmful software program written intentionally to enter a computer without the user's permission or knowledge. It has the ability to replicate itself, thus continuing to spread. Some viruses do little but

A computer virus is a type of malware that during repetitions by inserting copies of itself (possibly modified) in other computer programs, files, or the boot sector of the hard disk; If the replication was successful, the affected areas are then "infected". Viruses lead to often a type of harmful activity infected hosts such as steal, disk space on the hard disk or CPU time, display uncontrollable message, steal user contacts, access to private information, corrupt user or system data or log keyboard. However, the main characteristic of viruses is self-replicating and self-installing. Only some of viruses would carry a payload or have a hidden behavior.