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An example of JavaScript

There maybe some still do not deem it necessary to Firefox to purchase it with the appropriate here linked add - ons to provide, I would like to incorporate a small example.

16.04.2009 smuggled a 17-year-young man, a worm in the networks of the free Blogger service mini " Twitter " field. This worm spread through Javascript from profile to profile. When you look at the profile of an infected person, they put themselves on the worm.

Fortunately, the worm was not intended to be used, for example, dangerous and steal passwords. However, this would have been easily possible. About the XSS vulnerability, which was used by hackers, it would have been possible without notice read users' passwords. However, wanted to make the 17 year old apparently aware only of the vulnerability.

are now closed loopholes used, and disinfected the profiles.

A defense of this worm would have been, for example, simply using NoScript . This would have blocked the malicious code, unless of course you could be the JScript on this very page. I would therefore like to reiterate that even the best plugin is useless if you make an exception for everything and everyone. Self, as Twitter has impressively demonstrated at trusted sites. Sometimes, however, is not different, and in an emergency you can ever make a temporary exception.

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The Internet browser

be Today we deal with another useful and important topic, the Internet browser. If you wonder why I do everything through a vein would explain, said that I certainly do extra. I want you to be the most important things done first before we go into details.

So many of you are probably still surfing with Microsoft's own browser, which in any Windows version is in, through the Internet. This course fully meets its Internet Explorer uses. Firefox is the however inferior in many things. Not least because of the Security. Many Password Stealer for example, have only the possibility of passwords of Internet Explorer to read. The same applies to Trojans with Stealer function.

Accordingly, I would like first to rate that it invites you to Firefox 3 down. Later, I will assume that you use this browser.

Another advantage deses browser, the add - ons. Every human being of the programming language XUL and JavaScript controls, allows for the Firefox add one - write on. This led to some very useful extensions have been developed.

I would like you put two very special to my heart:

first No - Script

No - script prevents unintended execution of scripts on certain websites. Many of you may already have come to Internet sites, which could no longer close or similar. However, this is just a harmless example. That no - blocked script elements you can also infect with malware or the like.

second Adblock Plus

Adblock Plus can block their annoying graphics. Banners and obscene images can so easily be forever hidden.

This combination of add - ons are you well prepared before attacking of websites, pop - ups and banners. Furthermore, you have better protection against password stealer.

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whitelist

As promised there is now a white list.
What is a White List? This list will serve you to verify the data received. If you send someone that is something, or it invites you down a bit, you can use this list and know-how from the last post whether it is secure and really is the promised file type.

films can have the following data types:

- avi
- wmv
- mpg
- flv
- xvid
- 3gp
- m4v
- can mp4

images following file extensions are:

- jpg
- bmp
-
gif - png

music can have the following file extensions:

- mp3
- have wav

executable files, the following entries - wma
:

- exe
- scr
- com
-

asked, however, there are certainly tricks that you yourselves Despite this knowledge can also infect. There are in fact often used combinations of these extensions, so it might happen that you get a file that looks like this:

TitelDesLiedes.wav.scr

If you look at this file name looks superficially we see that they contain a wav and. wohmöglich executes it. But as we know is this. Scr for an executable file. It is not a piece of music.
can be greatly increased this risk, if both the. Wav and. Are many spaces scr. Then the final file extension that is not directly displayed. If in doubt, always one click Rename to display the full file name.