Fundamentals of Blockchain Security Flashcards
7 cards from real Blockchain Technology practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Fundamentals of Blockchain Security flashcards as text
What is a phishing attack targeting crypto users typically designed to steal?
Answer: Private keys, seed phrases, or wallet credentials
Crypto phishing tricks users into revealing keys or seed phrases through fake sites or messages.
Why does irreversibility of blockchain transactions create a security challenge?
Answer: Stolen or mistaken transfers usually cannot be undone
Because confirmed transactions are final, theft or errors generally cannot be reversed or refunded.
What is the security purpose of multi-signature (multisig) wallets?
Answer: To require multiple keys to authorize a transaction, reducing single-key risk
Multisig requires several keys to approve spending, so compromising one key alone is not enough.
What is a 'rug pull' in the context of DeFi or token projects?
Answer: Developers abandoning a project and stealing investor funds
A rug pull is a scam where creators drain liquidity or funds and disappear, leaving investors with worthless tokens.
How can users verify they are interacting with a legitimate smart contract?
Answer: By confirming the verified contract address from official sources
Confirming the official, verified contract address prevents interaction with malicious clones or fakes.
What potential future threat could undermine current blockchain cryptography?
Answer: Quantum computers breaking existing public-key algorithms
Sufficiently powerful quantum computers could break today's elliptic-curve cryptography, motivating post-quantum research.
Why is verifying a recipient address before sending crypto a critical security habit?
Answer: Malware can swap the clipboard address and funds sent to the wrong address are unrecoverable
Clipboard-hijacking malware can replace a pasted address, and because transactions are irreversible, misdirected funds are lost.