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All 5 Flashcards — Network vulnerabilities
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Question
Vulnerability, attack or threat?
Answer
A **vulnerability** is the weakness. An **attack** is someone using it. A **threat** is the person or group who might.
Question
Virus or worm?
Answer
A **virus** needs a user to run the infected file. A **worm** spreads **by itself** across a network, which is why it moves so fast.
Question
What does packet sniffing require?
Answer
**Unencrypted** traffic passing the attacker's machine. Encryption makes what is captured unreadable.
Question
Why does blocking one address not stop a DDoS?
Answer
It is **distributed** — traffic arrives from many machines at once, usually ordinary computers that were themselves compromised.
Question
Why are people the weakest link?
Answer
**Urgency defeats caution** and authority is rarely questioned. One person in a thousand clicking is enough, and emailing thousands costs nothing.
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Full study notes for Network vulnerabilities
Topic 2.4 hub
Network security
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