#9 KEYLOGGING

Keylogger is a software program that is installed by Trojan horse or virus on a computer. This will record and capture user keystrokes. The captured data is then transmitted to a remote system. Though keyloggers can not damage the computer system, it should be treated as a serious threat.

Prevention: 1) Use anti-keylogging software such as ‘signature’ to detect and remove keyloggers; 2) Users should be aware of the programs that are installed on their system; 3) Use network monitors so that the users get alerted whenever an application tries to make a network connection.

#10 DENIAL-OF-SERVICE ATTACK

Denial-of-Service or DoS attack can make website or web services unavailable to the users. Most common method of attack is saturating the victim computer with external communication requests. Then the computer cannot be able to respond to any legitimate traffic or runs slowly and finally the service becomes unavailable. Attacks are mainly launched by zombie computers or botnets and they are commonly known as Distributed Denial-of-Service or DoS attacks.

Prevention: 1) Assign a separate emergency block of IP addresses for the servers; 2) Routers and Switches can be configured to cut off traffic and avoid the DoS attack; 3) Intrusion-prevention systems are efficient when the attacks have signatures linked with them.

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