Articles written by Mizaki Tanaka I hope you all enjoy the fun read these are released weekly so visit us often.
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Is time travel possible?
If humans were to invent a time machine in the future, why have they never traveled back in time to visit us?. As far as we know, there are no records...
Physicist Albert Einstein was a great thinker about space and time. His famous "theory of relativity" shows that time is not fixed. for example, if you were to travel into space at a speed close to the speed of light, and then return to Earth, people on Earth would have aged more than you have. Einstein demostrated this with some very clever math, but his math also showed it was impossible to travel faster than the speed of light. Einstein believed that you needed to travel faster than light to travelthrough time. so a no-go.
Even though Einstein thought time travel was impossible, other scientist have used his ideas to theorize how it might be done. Amazingly, they have discovered that there is nothing in the laws of physics to forbid it. Here are two of the time travel options.
1) Time travel could be achieved using black holes- areas in space where gravity is so powerful that they suck in everything, including light. Black holes could provide the entrance to wormholes-shortcuts through space and time. There are a lot of holes in this theory.
2) US astronomer Frank Tipler belives it is possible to build a time machine with pieces of incledible dense material- say 10 times as dense as the Sun. simply roll it in a cylinder shape a few billion miles long, then set it spinning. Once it's spinning fast enough, space and time will bend around it.
A spaceship sent on a precisely plotted spiral course around it should emerge almost instantly in a different galaxy and time. So, make sure you are up to date with your travel vacciinations.
Of course there are no materials available today that could withstand the massive forces encountered on these trips. but scientist are working on that so dont worry :P
hope you enjoy my article :P
Regards,
Mizaki Tanaka.
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Lets talk about Hackers now :P
Hackers : computers connected via the internet are vulnerable to hackerswho can use cunning tricks to gain access to them... or even take them over.
1992: argentinian studentJulio Ardita hacked into the computer systems of Havard university and the US naval command. He was finally caught by police in 1997.
1994: Young British Hackers Bevan (Nicknamed Datastream Cowboy and Kuji) Broke into US military computers.
2002 Gary Mackinnon (known as SOLO) hacked into NASA and US Military computers from a room in London, UK He claimed to have been looking for evidence of UFO's
*Password cracking people help hackers by using obvious passwords, like their names and birthdates. Serious Hackers use password-cracker software that runs through all the possible combinations of numbers and letters until it find the right one.
**Getting a number "WAR DIALERS" programs identify the phone numbers organizations use to connect to the internet. by finding these, hackers can bypass security system.
Tricks and tatics
using data from phone books or company files to access someones'scomputer is called "Social Engineering" . "Preaking" involves hacking into telephone systemsto get free calls. another tactic is "PHISHING" - sending emails pretending to be from a recognized organizationso th victim emails back their details.
Hidden identity
hackers can use "IP spoofing" software to conceal their true identity online. Information is sent over the internet in packets of data. Each packet contains information about the computer it has come from, but IP spoofers change this information so that it seems as if the packet has come from somewhere else. Hackers use this software to get through security systems, or when they want to attack a network by flooding it with data.
Serious hackers don't just want to eavedrop on your computer's links to the outside world, they want to get inside your computer and take it over by:
TROJAN HORSE: a file that looks hamless until opened, but once open it installs a rogue program that takes control of the computer usually found on pirated hentai games or other warez :P
Keylogging is a method of linking up to someone computer and monitoring every key that is pressed useful for gaining passwords and other Security information.
Backdoor programs allow hackers to access your computer without a password.
Programs designed to scan for weaknesses in a computer's firewall system are called vulnerable scanners.
Sniffers monitor information traveling to and from a computer system, in order to capture all the passwords and user ID's of anyone using it.
Computer worms infect networks by sending copies of themselves to all the machines in the system. Unlike viruses, they dont have to attach themselvesto a program-this makes them harder to stop.
A virus is a program taht infectcs a host program and alters the way it works.
Regards,
Mizaki Tanaka
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