Understanding Blockchain Fraud and Risks

Which of the following best describes a "rug pull" scam in the context of blockchain and cryptocurrency?

• A scam where hackers steal private keys through phishing emails

• A fraudulent project where developers suddenly withdraw all funds and disappear

• A type of malware that mines cryptocurrency on your computer

• A scam involving fake ICOs that never launch

What is a common vulnerability found in smart contracts?

• Weak password protection

• Reentrancy attacks allowing repeated withdrawals

• Lack of two-factor authentication

• Use of outdated wallets

Which of the following is an example of phishing in cryptocurrency?

• Creating a fake website to steal users' login details

• Mining coins using a botnet

• Manipulating the price of a coin through fake news

• Withdrawing funds from a smart contract

How does a Ponzi scheme typically operate in the crypto world?

• By selling fake tokens that have no value

• By promising high returns to early investors using funds from new investors

• By hacking into wallets and stealing coins

• By creating a decentralised exchange with hidden fees

Which of the following is NOT a type of blockchain fraud?

• Double spending

• Phishing

• Proof of stake

• Rug pull

What is identity theft in the context of blockchain?

• Stealing someone's private keys to access their wallet

• Mining coins using someone else's computer

• Creating a new cryptocurrency without permission

• Manipulating smart contracts for personal gain

Which of the following best describes a "double spending" attack?

• Using the same cryptocurrency to make two separate transactions

• Sending coins to a fake exchange

• Mining two blocks at the same time

• Withdrawing more coins than deposited

What is a common sign of a Ponzi scheme in cryptocurrency?

• Promises of guaranteed high returns with little or no risk

• Open-source code and transparent development

• Regular security audits

• Decentralised governance

Which of the following is a method to reduce the risk of smart contract vulnerabilities?

• Ignoring code reviews

• Conducting thorough security audits before deployment

• Using only centralised exchanges

• Avoiding the use of wallets

What is the main goal of phishing attacks in the blockchain space?

• To increase the value of a cryptocurrency

• To trick users into revealing sensitive information like private keys

• To create new tokens

• To validate transactions on the blockchain