IGCSE Computer Science Paper 1 Crossword: 5.2 Digital Currency and 5.3 Cyber Security (Modules 520–546)
Name:
Date:
Class:
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Crossword
Read each clue and write the matching term in the grid. Numbers in brackets show the letters in each word.
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2
3
4
5
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7
8
9
10
Across
- 3. Spending the same digital currency twice. Blockchain stops it: each spent payment is already in the shared ledger, so a second payment of the same money is refused. Word 1 of: ______ spending (6)
- 5. A domain name ______ translates a domain name typed in a browser, such as example.com, into the IP address of the web ______ that holds the website. Word 2 of: ___ ______ (6)
- 8. An attack that redirects a user to a fake website, even when they type the right address, using malicious code or DNS poisoning, so the site can steal their login and payment details. (8)
- 9. The amount of digital currency a person owns, found by adding up all the money they received and taking away all the money they sent in the blockchain records, in time order. (7)
Down
- 1. Malware disguised as useful or harmless software. The user installs it willingly, then it secretly does harm, such as opening a back door or stealing data. It does not replicate itself. Word 2 of: Trojan _____ (5)
- 2. A full-mark answer uses digital currency, ledger, time-stamp and blockchain correctly, and links each point to a reason, using linking words such as because or so that. Word 1 of: ___ _____ and _______ (3)
- 4. Word 2 of the term in 2 Down: ___ _____ and _______ (5)
- 6. Word 4 of the term in 2 Down: ___ _____ and _______ (7)
- 7. Word 1 of the term in 5 Across: ___ ______ (3)
- 10. Match a threat by finding its process (how it works) and its ______ (why the attacker does it), e.g. phishing: fake emails trick users to steal login details. Word 3 of: process and ___ (3)
Answer Key
IGCSE Computer Science Paper 1 · Modules 520–546
1H
2K
3D
O
U
B
L
E
R
Y
S
4T
5S
E
6R
V
E
R
E
R
7D
8P
H
A
R
M
I
N
G
S
S
S
O
9B
10A
L
A
N
C
E
I
S
M
Across
3DOUBLE — Spending the same digital currency twice. Blockchain stops it: each spent payment is already in the shared ledger, so a second payment of the same money is refused. Word 1 of: ______ spending
5SERVER — A domain name ______ translates a domain name typed in a browser, such as example.com, into the IP address of the web ______ that holds the website. Word 2 of: ___ ______
8PHARMING — An attack that redirects a user to a fake website, even when they type the right address, using malicious code or DNS poisoning, so the site can steal their login and payment details.
9BALANCE — The amount of digital currency a person owns, found by adding up all the money they received and taking away all the money they sent in the blockchain records, in time order.
Down
1HORSE — Malware disguised as useful or harmless software. The user installs it willingly, then it secretly does harm, such as opening a back door or stealing data. It does not replicate itself. Word 2 of: Trojan _____
2KEY — A full-mark answer uses digital currency, ledger, time-stamp and blockchain correctly, and links each point to a reason, using linking words such as because or so that. Word 1 of: ___ _____ and _______
4TERMS — Word 2 of the term in 2 Down: ___ _____ and _______
6REASONS — Word 4 of the term in 2 Down: ___ _____ and _______
7DNS — Word 1 of the term in 5 Across: ___ ______
10AIM — Match a threat by finding its process (how it works) and its ______ (why the attacker does it), e.g. phishing: fake emails trick users to steal login details. Word 3 of: process and ___