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What Do You Know About Anti-spam Firewall?

By: Marco Maseko

Much like human viruses, computer viruses run the gamut from the benign to the fatally destructive to the computers they infect. And just as with human viruses, prevention is better than cure. Prevention begins by stopping them in their tracks at the portals of contact. This is where a firewall can come in handy.

An ideal firewall will hide the ports that a hacker might use to gain access to your PC and protect your home PC from attacks, as well as track those attempted entries and prohibit unauthorized access or output from your computer. Two-way firewalls are the best as they block the threats that are incoming OR outgoing, to prevent things such s virus, Trojans or malware from being installed without you knowing it.

You will need good anti-virus programs to go after any viruses that may inevitably bypass your firewall. It should be programmed to either quarantine or, preferably, destroy them. Last but certainly not least, it is essential to always keep your anti-viral and firewall programs up to date with the newest patches and security updates. Most viruses target your C: drive, so scan it daily. And never, ever open any unsolicited emails or the attachments that come with them.

The AVF

An insidious tactic that the spammers employ is called "Phishing." It involves the spammer sending out junk email that is specifically designed to look like it is from a reputable, legitimate source such as a reputable company like ebay or paypal. This spam utilizes the company's logo and official graphics.

To understand just how big a problem spam has become, it will help to realize the sheer volume of unsolicited junk mail is sent out every day. More than 50% of all the trillions of email that is mailed out is spam. This spam clogs up and wastes bandwidth, especially with the recent advent of image-based spam. It places a huge strain on servers and wastes a huge amount of time and money to deliver millions upon millions of unsolicited emails to the inboxes of recipients.

How do these spammers get your email address?

Typically, spammers will "harvest" email addresses from legitimate web sites, such as USENET groups, chat rooms, message boards, AOL profile pages and special interest group postings. These are sites you have visited and requested more information from, or corporate sites where you may have placed an order.

Some websites require you to register before you can place an order or access certain parts of the site. Not all these websites will be as protective of your email address as you may wish. Newsgroups are particularly notorious for exposing their users' email addresses to the spam gatherers. Most newsgroups do not take a great deal of care to hide the email of their users, and each and every email member email address is exposed and up for grabs by spammers. Some of the wbsites that aask you to register may also sell to spammers.

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