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Thursday, August 9, 2007
  How Does A File Download?
When you download a file, it is broken into many packets of data before it is sent over the internet to your computer, where it is then reassembled. Each packet of data that your computer receives needs to be accepted in a certain order and a certain size before the file you are downloading can be "put back together". Although these packets of data are sent out in the correct order, sometimes the packets can take different paths and arrive out of order or get lost altogether.

Here are the main components of this process:
MTU stands for Maximum Transfer Unit, which is simply a set value whereby file download packets are sent to your PC and reassembled.

RWIN - stands for Receive WINdow. This is a holding area, that your computer uses to sort the packets of data received.

TTL - stands for Time To Live. Packets of data are set with an "expiration date" and will be discarded after a certain amount of time. After a packet is discarded, your computer will have to request the missing packet again from the originator.

When setting your MTU too high, other PC’s might not be able to handle file transfers as efficiently, slowing down the data transfer process. If you set the MTU too low, your Internet and file downloads in general may suffer as a result of unbalanced value percentages. In other words, the files needed to open up that picture your grandma sent you may not have priority over a large file header or other unimportant information slowing down the download process.

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Wednesday, August 1, 2007
  Microsoft Gearing Up to Okay Malware Center


Just when you thought you’ve seen it all, Microsoft has surprised us once again with its brand new patent-a Malware Protection Center. What’s malware, you ask? Malware is a combined word based on “malicious” and “software.” Frequently, malware is used by businesses and Internet companies to track your spending habits, so they can better advertise to you and varying demographics.

Microsoft’s new “advertising framework” program is designed to use context data and display triggers on your PC, which are then processed and sent out to an external, advertising third party. While it is unclear whether this program will run through the hard drive on your OS or attach itself through files and applications, there is one clear indication: your personal information can be tracked.

While you may not mind receiving advertisements that are akin to your taste and shopping habits, it’s vital to remember that anything processed on your computer is essentially up for grabs. Ever open your email inbox and see targeted keywords and ads that mimic what you said three emails back? This is exactly what this kind of program revolves around.

While this targeted advertising framework can benefit companies and increase their sales, consumers may not appreciate a sense of being stalked. Sure, you will receive more personalized ads that you might actually be interested in, but one has to wonder how far this can all go.

 
All about Internet Security for the average PC User from PCSecurityShield. Somewhat useful resources (and somewhat funny) that will help you protect yourself.

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