How to Update Anti-Virus Gratis?

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Viruses are becoming increasingly sophisticated and numerous. As web technology improves, so do viruses, meaning it is imperative to regularly update anti-virus protection. If, however, you do not wish to spend money on anti-virus software, then it is possible to achieve many of the same benefits for free. Most anti-virus companies offer trial software for free, and then you can replace it with that of another company. When a company introduces new anti-virus software, you can sample much of it free.

# Step 1: Choose the software that you want. Some of the most famous brands of software are also the best. Less-known software can come with greater risks. Well known companies such as Norton and McAfee regularly offer free software trials. Other companies which offer free anti-virus software are STOPzilla, AVG, Kaspersky, Panda Security and Avast (see Resources).

# Step 2: Find the trial download on the official web page of the company, or download the free software. Beware downloading material found in forums of other pages, since this can be used to spread viruses. Most trials are between 30 and 60 days. Download the trial software.

# Step 3: Repeat the process if the software expires. In order to speed the efficiency of the computer, be sure to fully uninstall the trial software, which usually loads on startup and can slow down a computer. Most websites will remember your details to prevent repeated trialling, although some will allow you to trial new products without problem.

Why is it difficult to remove trojan virus?

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Why is it difficult to remove trojan virus

Because trojans are a very common type of malware that is known to practically all web surfers, it is clear how hard it is to answer the question "how do i remove a trojan virus from my computer?"

A trojan virus makes a PC user think that it is a beneficial Windows application. Thus, trojans often masquerade as screensavers, packages of video codecs, tray clocks, weather forecast software, messengers, etc. Another major source of trojans is all kinds of illegal programs, cracks and keygens. It is a common practice to include trojans into free antivirus software distributed via peer-to-peer networks (e.g. torrents). This is especially dangerous for end-users because antivirus program cannot detect a trojan before the installation finishes and all updates are downloaded, thus the use of free antivirus software downloaded from suspicious websites or sources imposes a great risk on personal computers.

Moreover, one of the most difficult things in PC maintenance is to remove trojan virus from a PC where software of a suspicious origin has been installed.

What is a Trojan Virus

BitDefender, a world renowned antivirus software maker, conducted a research based on its statistics. Its purpose was to show which types of threats dominate the Web. The results are shown on the screenshot to the right. -->

It's clearly seen that nine out of ten most encountered threats are trojan viruses.

The first trojan in the list, Trojan.Clicker.CM, displays commercial ads, which "eat" the bandwidth and, as a consequence, slow down the PC.

It should be pretty evident that methods to remove trojan viruses should quickly adapt to the reality, since trojans lead the malware army.

So before learning how to remove trojan virus, it is important to know what this type of malware is in essence.

In short, as the term suggests, a trojan pretends to look and act like it's a legit Windows application. However, its malicious code is programmed to execute operations that no PC owner would want on his computer.

* Trojans are capable of stealing important information (passwords, credit card numbers, etc.) Then the sensitive data is transmitted over the Web to virus creators, who then are able to take control over infected computers.
* A considerable slow-down in system performance is one of the consequences of trojan virus infection.
* A user may be distracted by unexpected pop-ups with ads (mostly with casino, poker, adult content).
* Trojan viruses attempt to become parts of the infected system by interacting with Windows processes and injecting malicious code into legitimate files executed by the operating system (Winlogon is an example of such injection when a trojan virus is fully loaded after the user enters login details).

Trojans may get involved into distribution of unsolicited emails. Sometimes this type of malware is responsible for attacks on other computers connected to the Internet. While it's a bit scary, in fact any PC infected by a trojan virus may be engaged in decentralized attacks on servers of government institutions, universities, etc.

How to Upgrade Trend Micro Antivirus?

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How to Upgrade a Previous Version of Trend Micro PC-cillin Internet Security to Windows Vista.

Trend Micro PC-cillin Internet Security is a computer program that acts as a type of advanced firewall for computers running the Windows XP, Windows Vista or Windows 7 operating systems. Trend Micro PC-cillin Internet Security will monitor your Internet connection, allowing only the incoming connections that are deemed safe to access your computer. If you want to upgrade a previous version of Trend Micro PC-cillin Internet Security to the newest version for your Windows Vista computer, you'll need to use the Trend Micro upgrade site.

# Step 1: Open your web browser.

# Step 2: Visit the Trend Micro PC-cillin Internet Security upgrade site (see References).

# Step 3: Scroll down and click on the red download link for the version of the upgrade file that is available for your operating system. If you're running a 32-bit version of Windows Vista, you'll need to download the 32-bit copy of the installation file. If you're running a 64-bit version of Windows Vista, you'll need to download the 64-bit copy of the installation file.

# Step 4: Open the Trend Micro PC-cillin Internet Security upgrade file after it's on your computer.

# Step 5: Click "Next." Click "I Agree" to signify that you agree to the terms of service for Trend Micro PC-cillin Internet Security and then click "Next." Enter your Trend Micro PC-cillin Internet Security serial number (which you received when you originally purchased your previous version) into the box on screen and click "Next." Continue to advance through the installation process by reading the directions on screen to finish upgrading your previous version of Trend Micro PC-cillin Internet Security to the newest version.

How to Update AVG Anti-Virus?

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AVG regularly has new virus definition and program updates on its servers. The program by default will only check for an update once per day. Users wanting to ensure they get updates more frequently can change the amount of times the program checks for an update, as well as manually check for an update anytime they wish.

Manually Check for an Update

Step 1: Right-click on the AVG icon in your Windows taskbar.
Step 2: Select “Update Now” from the menu.
Step 3: Wait until a dialog box comes up stating that the update has completed. Occasionally, you will receive a program GUI update. Follow the onscreen instructions and prompts for the update.

Modify the Schedule for AVG Update

Step 1: Double-click on the AVG icon in your Windows taskbar.
Step 2: Click on “Tools,” then on “Advanced Settings.”
Step 3: Double-click on “Schedules,” then on “Program update schedule.”
Step 4: Change the options under the “Schedule Running” section for when you would like AVG to automatically check for updates. The recommended setting is between every three to six hours.

How to Upgrade McAfee Antivirus Via Command Line?

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McAfee AntiVirus is a program that scans your computer and protects it from Internet-related viruses and malware. Every version of McAfee AntiVirus comes with detection of security threats and automated resolution. If you run Windows remotely or must send instructions via the Windows command line, you can force an engine upgrade using a single broadcast command on the machine that needs updated antivirus software.

# Step 1: Click "Start," then "McAfee AntiVirus."

# Step 2: Click "Settings," then click "Remote Invocation."

# Step 3: Click "Allow CLI udpates" and click "OK."

# Step 4: Click "Start," then type "Command Prompt."

# Step 5: Right-click "Command Prompt" and choose "Run as administrator."

# Step 6: Type "mcafee-upgrade" to launch the McAfee upgrade utility.

How to upgrade Norton Antivirus?

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Norton frequently updates its anti-virus software, as do most security software companies. This is because hackers are constantly coming up with new and inventive ways to do harm to your computer, steal your identity, take your money, and otherwise make your life difficult, and the folks at Norton need to stay ahead of the curve to protect you. Thus, if you are surfing the Internet with outdated security software, it is probably best to get an update as soon as.

Step 1 : Find out what version of Norton AntiVirus you are running. To do this, open your current AntiVirus program and go to the "Symantec: Norton Support" page that is referenced below. It will give you a list of examples of what the various versions look like.

Step 2: Go to the Symantec Store link referenced below. Under "Subscription Renewals," you will be given two drop-down menus where you can identify the specific AntiVirus software you are running. Click "Continue."

Step 3: Choose from the options you get there. You can simultaneously download the newest version of Norton and renew your subscription, or you can just renew your subscription with the old product. You should get one of the newer versions. Click "Add to Cart" and proceed to checkout. The software will download to your computer.

Step 4: Double-click on the downloaded file and follow the instructions in the installation wizard. It will walk you through the instillation process.

How to Update McAfee Antiviurs Software?

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McAfee is a popular virus detection program with a vast knowledge base containing lists of known threats (and how to neutralize them). These lists are updated by the McAfee tech team as often as new virus types are discovered. In order to keep your version of McAfee VirusScan up to date and prepared for the most recent viruses, you need to periodically (ideally once a day) update the program. Manually updating McAfee VirusScan is a simple operation.

Step 1: Open McAfee VirusScan. To do this, go to Start > All Programs > McAfee, then click on "VirusScan." If the program is already running, you can also open it by clicking on the McAfee icon in the system tray area of your taskbar.

Step 2: Click on the "Update Now" button in the navigation pane of the McAfee window. The updater will now initialize and begin searching for (and downloading/installing) any available updates.

Step 3: Click on the "Close" button in the update window once it has finished updating. Your copy of McAfee VirusScan has now be updated to the latest version available.