Tag Archives: Study

Computer Virus Examples

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New computer viruses are being created, exposed and fought every day. These computer viruses are created often just to annoy us and to wreak mayhem in our computer systems. Below, I have described ten viruses currently cited as being the most widespread and being potentially able to cause the most damage. However, new viruses are being created daily, so this list is by no means complete. The only thing you can do is stay alert, keep your anti-virus software updated, and stay aware of the current computer virus threats.

Virus: Trojan.Lodear: A Trojan (from Trojan Horse) that tries to download files from a remote source. It will introduce a .dll file into the EXPLORER.EXE process causing system instability.

Virus: W32.Beagle.CO@mm: A mass-mailing worm that lowers security settings. It can delete security-related registry sub keys and may prevent admittance to security-related websites.

Virus: Backdoor.Zagaban: A Trojan that allows the infected computer to be operated as a covert proxy and which may degrade network performance.

Virus: W32/Netsky-P: A mass-mailing worm which propagates by emailing itself to addresses produced from files on the local drives.

Virus: W32/Mytob-GH: A mass-mailing worm and IRC backdoor Trojan for the Windows platform. Messages sent by this worm will have the subject chosen randomly from a list including titles such as: Notice of account limitation, Email Account Suspension, Security measures, Members Support, Important Notification.

Virus: W32/Mytob-EX: A mass-mailing worm and IRC backdoor Trojan similar in nature to W32-Mytob-GH. W32/Mytob- EX runs continuously in the background, providing a backdoor server which allows a remote hacker to gain admittance and control over your computer via IRC channels. This virus spreads by sending itself to email attachments gleaned from your email address book.

Virus: W32/Mytob-AS, Mytob-BE, Mytob-C, and Mytob-ER: This family of worm variations possesses similar characteristics in terms of what they can do. They are mass-mailing worms with backdoor functionality that can be controlled through the Internet Relay Chat (IRC) network. Furthermore, they can spread themselves by email and by various operating system weaknesses such as the LSASS (MS04-011).

Virus: Zafi-D: A mass-mailing worm and a peer-to-peer worm which copies itself to the Windows system folder with the filename Norton Update.exe. It can then create a number of files in the Windows system folder with filenames consisting of 8 random characters and a DLL extension. W32/Zafi-D replicates itself to folders with names containing words like ‘share’, ‘upload’, or ‘music’ as ‘ICQ 2005a new!.exe’ or ‘winamp 5.7 new!.exe’. W32/Zafi-D will also display a fake error message box with the caption “CRC: 04F6Bh” and the text “Error in packed file!”.

Virus: W32/Netsky-D: A mass-mailing worm with IRC backdoor functionality which can also contaminate computers vulnerable to the LSASS (MS04-011) exploit.

Virus: W32/Zafi-B: A peer-to-peer (P2P) and email worm that will reproduce itself to the Windows system folder as a randomly named EXE file. This worm will check for the presence of an Internet connection by attempting to connect to google.com or microsoft.com. A bilingual, worm with an attached Hungarian political text message box which translates to ?We demand that the government accommodates the homeless, tightens up the penal code and VOTES FOR THE DEATH PENALTY to cut down the increasing crime. Jun. 2004, P?cs (SNAF Team)?

Owen Jones, the author of this article, writes on many subjects, but is currently involved with the network antivirus software. If you have an interest in such software, please go over to our website now at Computer Antivirus Software

Spyware, Adware And Antivirus

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Adware, spyware and anti-virus software share some similarities, one of which is that all three are major problems for computer users. Let’s differentiate between the three.

Spyware is software that does not necessarily damage your computer. What it does is build links whereby someone else apart from the computer owner can communicate from that computer. Usually spyware records the different kinds of web sites you visit and sends that information to web advertisers, who then later send you unwanted emails and pop-ups.

Which is why spyware is disliked and shunned. It is more invasive than adware. Spyware has its own separate executable programs, which allow it to record your keystrokes, scan files on your hard disks and look at other applications that you use, including but not limited to chat programs, cookies and Web browser settings.

Spyware then sends the information that it had gathered to the spyware author. The author will then use this data for advertising and marketing purposes. They also sell the information to advertisers and other parties.

Adware, on the other hand, is a more legitimate form of software.. It is similar to spyware but adware is advertising spyware which is bundled into free software or a free program and is installed automatically once that particular program or software is loaded into your computer system.

Some types of adware, on the other hand, download advertising content when a particular application is being run. Some adware acts like spyware in that it tracks and reports user information to the program’s authors.

The signs of spyware infection include pop-up ads that seem to be unconnected to the site you are looking at. Sometimes spyware pop-ups are advertisements about adult contents. Furthermore, if you become aware of your computer slowing down, there is a big chance that spyware and its components have found their way into your operating system. If Windows desktop takes a long time to load, it is best to scan your computer for spyware infections.

Viruses, on the other hand, are a destructive kind of software. They were designed and created for one reason alone and that is to cause chaos on your computer. They may destroy whatever data they come in contact with, can initiate self replication and then infect as many components of the computer’s operating system or network as possible.

These days, a lot of anti-virus software also offers spyware and adware scanning and removal utilities. They then remove it as well as its components located in the system registry and other places on your computer. It is therefore, good practice to regularly update your anti-virus and anti-spyware scanner to ensure that your computer is protected from the thousands of spyware and viruses in the Internet. Beware of free add-ons or free anything really.

Adware could be spyware in disguise and could be just waiting to be deployed for its writers to gather your information. Learn how to set up a firewall and pop-up blocker in order to minimize the risk of computer infection and ensure the security of all your computer files.

Owen Jones, the author of this article, writes on many subjects, but is currently involved with researching the best virus protection software. If you have an interest in such software, please go over to our website now at Computer Antivirus Software

The Ancient Roots Of Barry, South Wales: Part 2.

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In the 18th. Century evidence of Neolithic man was discovered in the form of dishes, saws, knives, flints, a scraper, a prehistoric horn celt with obscure markings, a spokeshave and some arrowheads, amongst other things. Unfortunately, although these things reside safely in the Museum of Cardiff, no one thought it worth excavating at the time and now residences stand on the sites.

An ancient Roman kitchen, complete with remains and utensils underwent a similar fate. In 1533, Leland was made the Kings Antiquary and was directed to make a tour of all places where records were held. This took him nine years and his description of the island was:

“It is about a mile in circumference and has good corn, grass and some wood, and there is no dwelling on the Island, but in the midst of it is a fair little Chapel of St. Baruch which is visited by many pilgrims. It took the name Barri from this holy man who was buried there and whose remains are yet on the Island”. (The Welsh name for Barry is Y Barri).

Vikings ravaged the coast of South Wales in the tenth century. They often took hostages from the monasteries, but they did not seem to want to live in the area. For a long tim, the island was known as the “Saints’ Retreat” or the “Island of Saints”. Afterwards, in the sixteenth century, it was inhabited by smugglers and pirates and was called the “Smugglers’ Fortress”. This became serious as it grew simultaneously with the rise of Bristol, Britain’s second largest port.

Barry Island soon became the centre of piracy and smuggling in the Bristol Channel. In 1784, the island became known as the “Fortress of Knight”. Knight was the most prolific pirate and smuggler in the channel and people were to terrified to speak out in court against him., although he was also considered a bit of a local hero. His armed ship was called ‘John O’ Combe’. He was eventually forced out to Lundy, which he also fortified. He and his successor, Arthur, returned to Barry so frequently that H.M. Customs asked the government to station a cutter in Penarth and 60 troops to Barry.

The small seaside village of Rhoose, five miles from Barry, was so well-known for its wreckers that George II sent troops to break up them up. They landed at Aberthaw, just up the coast a bit further, “the Rhoose men’s favourite landing zone, from where they could easily transport the contraband along Port Road to Cardiff, the main market for such things”. While digging out for the docks at Barry in the late nineteenth century, several large caves were filled in. They had probably been used by the pirates who were moved on in about 1850.

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Calendars And How To Appreciate Them

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The calendar is such a commonplace, everyday item, but how much do you really know about the operation of it. Why is it like that?

A DAY: The Earth rotates at a reasonably fixed pace about the imaginary line running between the North and South Poles named the Earth’s Axis. The time it takes to spin once is called a ‘rotation’ and this takes just under twenty-four hours. Nevertheless, because the Earth is constantly traveling around the Sun, the exact time from noon one day to noon the next is 3 minutes 56 seconds longer and this makes a day almost exactly twenty-four hours in length.

The real time from noon to noon varies depending where the Earth is on its celestial course around the Sun, but if you average the days in a year out, it comes to exactly twenty-four hours.

A YEAR: All nine planets in our solar system travel around the Sun in almost perfectly circular routes called orbits. Each trip around the Sun is called a revolution and all the planets revolve around the Sun in the same direction. The direction the Earth takes can be verified by noting its location against the background stars.

Since you cannot see the Sun and the stars at the same time, it is obligatory to note the location of the Sun in the morning and the see which stars appear there in the night. You will see that the Sun appears to pass through the twelve constellations of the zodiac during a year.

Earth’s trip around the Sun, which seems like the Sun travelling through the zodiac takes about 365.25 days. This varies from year to year, so astronomers add or delete a second in some years to make their time accurate with the Earth’s motion.

THE SEASONS: The seasons indicate the variation in the pattern of daylight over the span of a year. Because the Earth is tilted off centre, different parts of it receive different quantities of sunlight on different stages of its path around the Sun, a path that we call a year. So, between about the 21st September and late March, the Earth’s Northern Hemisphere is tilted away from the Sun, which produces Autumn and Winter, giving less than twelve hours of daylight per day.

From April to the 20th September, the Northern Hemisphere enjoys more than twelve hours of daylight a day, creating Spring and Summer. The exact opposite occurs in the Southern Hemisphere.

The Equinoxes occur at the points in the year when there is exactly twelve hours of sunlight and darkness in the day. So, the vernal or Spring equinox is on or around the 21st March and the autumnal equinox is on or around the 21st September. Summer officially begins on the day with the greatest amount of daylight, the 21st June or summer solstice.

The winter solstice occurs on the shortest day, the 21st December. ‘Solstice’ is a combination of two words meaning ‘sun standing still’ and the days are so called because they are the days when the apparent movement of the Sun reaches its limits and reverses course again.

Owen Jones, the writer of this piece, writes on many subjects, but is currently involved with researching Franklin planner pages. If you have an interest in calendars, organizers or promotional calendars, please go over to our website now at Promotional Desk Calendars

The Ancient History Of Barry, South Wales: Part One

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The majority of what we have come to know about Barry and the Vale of Glamorgan in which it is to be found, has been gathered from the observation of old properties in the area. However, many of these are in a very bad state and have been for a very long time. There are also legendary tales like the one about Joseph of Arimathea, who traded tin across the channel in Glastonbury and was one of the first missionaries to the country.

Tradition maintains that the father of Caractacus took his son to Rome and was converted to Christianity. They returned to the Vale of Glamorgan with the missionary Bran the Blessed. We do know that Christianity had become fairly popular by the early 4th. Century and that south Wales sent some bishops to the Council of Rome.

Saint Baruch’s Church on Barry Island is one of the oldest places of historic religious interest in the region, but unfortunately, it too has been allowed to become dilapidated. Barry Island was one of the most important places of monastic interest in south Wales and around. The ancient Viking strongholds of Steep and Flat Holms also housed monks and Saint Illtyd’s Seminary in nearby Llantwit Major, which taught 2,200 disciples, was closely linked to it too.

Porthkerry Point jutted out into the sea almost certainly further out than it is today and a castle was constructed there on the site of an ancient Roman fortress and naval dockyard. Many deer and wolf bones have been found between Barry and Sully, indicating the presence of these animals in great numbers. Arrowheads, flints, bone needles and coins have also been found.

Barry Island was first known as Baruchs Island after St. Baruch, who was found drowned, washed up on the beach in 700 AD. He had drowned on his return from Flat Holm, where it was customary for Saints and religious students of the seminaries to spend Lent.

He and Gwelches were both students of St. Cadoc and when they had got back from Flat Holm, they realized that they had left their enchiridion (religious manual) behind. St. Cadoc made them go back for it. Neither monk returned from the trip alive.St. Illtyd, St. Baruch’s most famous disciple was educated there too.

Barry Island has had several names, including Island of the Saints and Insular of Peiros. St. Peiro was the leader of the seminary after St. Illtyd and the mentor of St. Samson. St. Doeninas was also a leader of another abbey near Friars Point on the island.

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