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Computer Science IGCSEPDF 59
142 pagesrevision 46930
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Brute Force Attack
The hacker repeatedly tries different password combinations until the correct one
is found.
Effects: Access to confidential data such as emails or credit card details.
Prevention: Use long, complex passwords with numbers, symbols, and mixed
case letters.
Data Interception
Occurs when attackers intercept data being transmitted over a network.
Two common methods:
o Wardriving: Illegally locating and using unsecured wireless networks.
o Packet Sniffing: Capturing data packets sent over the network to extract
information.
Effects:
Datatheft, corruption, or system crashes.
Prevention:
o
Use
encryption
and
antivirus software
o
Avoiduntrusted software
o
Do notopen suspicious emails or links
Distributed Denial of Service (DDoS) Attack
Attackers overload a network or server by sending excessive traffic from multiple
computers.
Effects:
o
Makes websites or online services temporarily unavailable.
o
Prevents users from accessing their accounts or resources.
Prevention:
o
Use firewalls, proxy servers, and intrusion detection systems.
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