Truth does not do so much good in the world,
as the appearance of it does evil.
François de la Rochefoucauld (1613-1680); French writer.

- (V) Classifying malicious code -
Oxygen3 24h-365d, by Panda Software (http://www.pandasoftware.com)

Madrid, August 13, 2003 - Today's Oxygen3 24h-365d, the fifth and final
issue dedicated to different types of malicious code, refers to Trojans,
which usually carry out their actions without the user noticing.

Trojans are named after the mythical Horse of Troy, a large, wooden horse
that Greek soldiers left at the doors of the city of Troy, after a long
battle. Thinking that the Greek army had withdrawn, the Trojans took the
horse into the city. However, at nightfall, the Greeks got out of the horse
and attacked the city, thus destroying the city of Troy.

In computing, Trojans are, apparently harmless programs that after reaching
a computer, carry out several actions without the user noticing. Unlike
other malicious code, Trojans do not replicate by infecting other computers
and so their capacity to spread is limited.

Depending on the actions they carry out on the affected computers, Trojans
can be classified into the following types:

- Destructive Trojans are designed to delete certain files, format the hard
disk, or carry out similar destructive action.

- Backdoor Trojans are designed open a backdoor in the computer to let
hackers enter and take remote control of it. For this reason they consist of
two components: the server, installed on the machine under attack and the
client, used by the hacker to control the computer.

- Keylogger Trojans are programmed to capture the user's keystrokes. This
information is stored in a special log that can be accessed by the attacker.

- Fake Trojans, which after being run, display false error messages
prompting users to enter user names and passwords which are then sent on to
the creator of malicious code.

For further information on Trojans or other type of malicious code, visit
the Virus info section of Panda Software's website at:
http://www.pandasoftware.com/virus_info/

NOTE: The address above may not show up on your screen as a single line.
This would prevent you from using the link to access the web page. If this
happens, just use the 'cut' and 'paste' options to join the pieces of the
URL.

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5 more viruses detected by Panda ActiveScan, Panda Software's free, online
scanner: 1)Blaster; 2)Bugbear.B; 3)Klez.I; 4)Parite.B; 5)Enerkaz.


To contact with Panda Software, please visit:
Panda
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