RAAF Radschool Association Magazine

RAAF Radschool Association Magazine - Vol 19 November 2007 Page 10
Junk mail If you’re fed up with receiving a mailbox full of junk mail or of getting those annoying telemarketing calls at dinner-time then you can do something about it. To stop (most) junk mail in the letter box register here www.adma.com.au/asp/index.asp?pgid=1999. To stop telemarketing phone calls, put your details on the "Do not call" register here https://www.donotcall.gov.au/ Delete: When you delete a file or an email, it may go into the recycle bin or deleted folder. If you really want rid of it, you can empty your recycle bin or delete your email folder, right? Well, Maybe not!! When you delete a file, even from the recycle bin, it's still on the hard drive. It's only marked as deleted. The hard drive space occupied by that file is available, so it may be overwritten when you write another file to the hard drive. But nefarious snooping organizations and adolescents are well appraised of the fact that erased files can, in many cases, be unerased. You can download restoration.exe from www.snapfiles.com/get/restoration.html and check out your own hard drive to see what files are lying around that can be unerased: It's also handy if you accidentally erase a file that you'd like to keep. Even if your file has been overwritten, it is possible to un-overwrite it and get back at the original data. Everything on your hard drive is written as zeros and ones, just like the RAM in your computer. However, the hard drive saves a zero or one as a tiny magnetic spot on a metal platter. While the circuit in RAM is definitely a zero or one with no middle ground, a magnetic spot may have a little slop to its magnetic charge. A zero might be 0, or 0.001, or even 0.01. A one might be 1 or 0.999, or even 0.99. As it happens, when you overwrite a one with a zero, its value is just a hair higher than zero. And when you overwrite a zero with a one, the result is slightly less than a fully charged one. So with a very accurate hard drive reader it is sometimes possible to read a file that has been overwritten. This requires special hardware/software and is pretty expensive, and as such this technique is used primarily by government organizations and divorce lawyers. What if you want to make sure you file is deleted so that nobody can read it? You could ram a screwdriver through your hard drive or belt the hell out of it with a ball pein. Or you could get a file wiper program that overwrites your files with random or subsequent zeros and ones a bunch of times. Here's one that can wipe all your erased files: www.download.com/Mutilate-File-Wiper/3000-2092_4-10449033.html In practice, you're more likely to mess up and erase the wrong thing if you try to keep all your personal stuff on your computer properly wiped. It's a lot easier if you trust people not to snoop. Telstra: If you are a TPI or hold a Pensioner Concession Card and are with Telstra, the following could be of interest to you........ Are you getting the three monthly $19.80 telephone allowance??. If so, did you know that you can also get a discount on your line rental?? If you have local and national calls with Telstra, you're also eligible for up to $12.25 per MONTH discount on your line rental fee". So, for the normal three month bill a saving of $36.75 is available - if you ask. I am sure a lot of you are not aware of this, so if you're with Telstra and not getting this additional concession, grab your TPI card or PCC and phone 1800 192 929 and speak with them. Penang school: If you were lucky enough to have had a stint at Butterworth from the late fifties onwards and you had kids that went to the local school, you (and your grown up kids) might like to check out THIS SITE . OOPS: A Predator unmanned aerial vehicle crashed last April while snooping along the U.S. - Mexican border. The reason for the crash?? One bloke was flying (controlling) the Predator, when his system locked up. He transferred control to another bloke. The other bloke happened to have his controls set in the fuel cut-off position when he received control and the engine died. But this bloke didn't realize it. When the Predator refused to obey and maintain altitude, the new controller put it into the autonomous lost-link mode. But the engine was still dead, so the Predator just circled down until it glided into the ground. It was a $6.8 million error.
There were 39 combat related killings in the whole of Iraq during the month of January 2006..... In the fair city of Detroit there were 35 murders in the same month.	If someone told you they were a pathological liar—would you believe them??
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