Zusammenfassung der Ressource
Malware
- Virus'
- A virus will often be designed to delete or corrupt data.
- This is a piece of code that is designed to
replicate itself throughout the computer or
network. For example it will add itself to a file
on your computer and, every time the file is
opened, the virus runs and once more seeks
out other files to infect.
- Worm
- This behaves just like a virus, but does
not necessarily harm files. Instead, it
tries to copy itself so many times that
the whole system runs out of resources
and crashes.
- One of the most famous worms is the
ILOVEYOU email worm. In 2000, it
managed to infect nearly 10% of all
internet connected computers, causing an
estimated $8 billion in damages.
- Trojan
- Named after the famous
Greek story of the Trojan
Horse.
- A trojan appears to be a harmless
application - a downloaded game
for example. You play the game,
but meanwhile it is running in the
background carrying out its real
intent - maybe letting someone
else access to your computer.
- Spyware
- Spyware is often used for identity
theft or to gather passwords for
bank accounts.
- Spyware stays hidden out of
view and is designed to spy
on your computer, looking for
personal information,
passwords and so on.
- Ransomware
- Ransomware encrypts critical files and data,
making them unusable. Eventually it presents
the user with a ransom, demanding money be
sent to the attackers to unlock the system.
- Scareware
- Scareware will cause a pop-up
to appear on your screen
which will say something like
'Your computer has a virus.
- In reality, you do not actually have a
virus. The scareware it trying to frighten
you into purchasing and downloading
the software which itself may actually
contain malware.
- Rootkits
- Rootkits give other people
permissions and access to your
computer, allowing them to take it
over remotely and do whatever they
like.
- It is designed to run even before
the operating system itself is
booted up and it continues to
stay active in the background
while you are using the
computer.