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Antivirus Software Information: Do it yourself Antivirus Tips

admin — Fri, 09 Jul 2010 07:54:28 +0000

How Antivirus Software Works

Most computer users know what antivirus software is, but have no idea how it works. Knowing how it works is key to choosing the right virus protection for your system.

Following is an overview of how antivirus software works.

Antivirus software is basically computer programs that protect your system from malicious or damaging software. The name “antivirus software” has its genesis in the fact that it was originally designed to fight computer viruses. Now, it has evolved into a more sophisticated, all-encompassing virus protection program. It targets phishing attacks, destructive worms, Trojan horses and a host of other malware that can destroy your system.

The 2 Methods Used by Antivirus Software to Protect Your System

Antivirus software uses two different approaches to protect your system: (i) scanning files; and (ii) targeting suspiciously behaving files from computer programs that may be infected.

Scanning: Scanning can be explained by the law enforcement analogy of police lineups. Basically you match a perp (a suspect) to a photo. To explain, when antivirus software scans a hard drive, for example, it is referred to as the virus dictionary approach.

It is so named because it is looking for a match between a file on your hard drive and comparing it to a “dictionary” of known viruses. If any piece of code in a file on your hard drive matches the known virus in the dictionary, then the antivirus software swings into action, taking one of the following three actions:

Repair the File: The antivirus software will try to repair the infected file by removing the virus; or

Isolate the File: The antivirus software will attempt to provide virus protection by making the file inaccessible programs. This keeps the virus from spreading; or

Delete the File: The antivirus software will delete the file, which is arguably the most drastic form of virus protection.

The dictionary approach requires computer users to constantly download updated versions of their virus protection software. This is because new entries (ie, viruses, malware, etc.) are constantly being added to the dictionary.

Dictionary-based antivirus software usually starts working when a computer’s operating ssytem either opens, closes, emails or creates them. However, a user can set up their system to be constantly monitored by scheduling the antivirus software to scan files on a consistent basis. This can be daily, weekly, monthly, etc. In short, however often they want.

The Suspicious Behavior Approach: The suspicious behavior appraoch to virus protection is different from the dictionary approach. It monitors all of the programs on a system instead of attempint to identify known viruses.

For example, if one program tries conduct a suspicious activity like writing data to an executable program, the antivirus software will alert the user to this and inquire about what steps it should take, if any.

One of the advantages often cited of using the suspicious behavior approach for virus protection is that it offers protection against new viruses. Remember, with the dictionary approache, the virus has to first be identified and listed.

To use another law enforcement analysis, this is like staking out a suspect because of his behavior. Even though he hasn’t done anything yet, the actions he’s taking alerts you to the fact that he might be up to something.

Freeware Antivirus Software

admin — Sun, 27 Jun 2010 07:06:06 +0000

Nowadays, the sheer number of malicious programs and software exploits has made it so that no computer is ever considered Internet worthy without an antivirus program. This is further complicated by the fact that antivirus softwares tend to be either expensive or not effective. Luckily, there is Avast 4 Home Edition, an antivirus that is as effective as the most expensive PC security suites, yet available for download free of charge.

There are lot of free antivirus programs on the net but only few does the job that is needed to prevent viris and clean it once it gets infected. Avast 4 Home Edition has a lot of features that a user hopes needs to have in his anti-virus software. There are a lot of things that has been included in this software and Avast is intelligent enough to know where it should check, such as the overlooked places where viruses and other malicious files can possibly enter. These places include the following:

- Web traffic;

- Mail;

- Peer-to-peer programs; and

- Instant Messengers.

Avast 4 Home Edition is very easy to configure which is especially beneficial for novice users or people who have no prior knowledge of how to set up antivirus programs. It also includes an Outlook Express archive unpacker which scans email attachments from Outlook Express, perfect for helping you weed out harmful attachments from real attachments that came from friends and family. This also gives you a much needed sense of security as you feel free to open any attachments without worrying if the person who sent the mail to you is infected.

The main features included in Avast 4 Home Edition are:

1. Real-time protection:

2. On-Demand Scanner:

3. Web Shield: this monitors the incoming traffic from the Internet.

4. Email real-time protection: It monitors the incoming and outgoing emails from any SMTP, IMAP4 and POP3 email client.

5. Peer-to-peer programs: Checks the files being downloaded from Kazaa and BitTorrent. Also files from IM messengers specifically ICQ and Miranda are checked together with NNTP newsgroups.

6. Automatic Updates: Like other free antivirus software, this application checks for necessary updates. The updates are needed to make the application more robust when it comes to dealing with viruses and other malicious files.

7. Log viewer: The user will be able to review the threats that were detected by the software and the action taken.

8. Virus Chest: This is where the viruses and other malicious files are placed or quarantined when it is not removed or cleaned. This prevents further infection and also allows avast to collect more information about the thread, making other PCs safer in the future against the threat in question.

9. Boot Time Scanner: The application scans the disks at the same time Windows does CHKDSK.

10. Antivirus Screensaver, which allows Avast to run and scan your system everytime you let your computer idle.

An overview of dental profession

admin — Sat, 29 May 2010 07:37:01 +0000

Taking care of your teeth is not only essential for your teeth whitening care but also a necessity for maintain your overall health. One should understand that there exist a number of serious and fatal diseases, sources of which are oral and dental problems. Heart strokes and various types of mouth cancers may also result from improper care of your teeth. Despite getting a good dental implants package, you need to take proper care of your teeth so that you can stay relaxed and happy with a breezing smile. You should learn about your teeth as much as possible. This will make you aware of bacteria, their serious and damaging effects, and proper methods of keeping your teeth cleaning.

In today’s world of modern education, dentistry and surgery are among the most common subjects. Millions of students from every corner of the world get enrolled in dentistry subjects. There are thousands of courses for dentists available in different universities in different geographical regions. Furthermore, there are thousands of subcategories of the field which make it more confined and filtered. As a result, you need to select your profession very carefully. Proper educational counseling should be conducted in order to get the best and most demanding profession. An ambitious dentist will always look for a dental practice for sale to start his own business

Excessive consumption of tea, chocolate, bear and related products are increasing the business of its manufacturers. So, where one part of the economy is getting flourished, there is also an increasing number in dental jobs. Furthermore, pays and bonuses made in the profession are really attracting and stunning. This make young and talented people get attracted towards the profession. But, you should first completely understand your future, your interest and your mind. Once you have a settled up plan, you should start with the profession firmly and confidently. Try to learn about your dental profession as much as possible, because the more you learn, the more better dentist you can be