In order to confirm the identity of the person entering an account, a verification code is given to a different device. It's used for two-factor authentication.
Bitcoin Halving
A blockchain event known as a "halvening" (or "Bitcoin halving") causes block subsidies or rewards for validating transactions to be reduced by half.
Ransomware
Ransomware is a type of malware (malicious software) that has the final goal of convincing victims to pay for a decryption ransom in order to recover their compromised files or system. The payments are normally asked in digital currencies that are difficult to be traced, such as Bitcoin, Monero, or any other cryptocurrency.
Accountability
Accountability is the need or willingness to take ownership of one's actions. When someone takes ownership, they are committing to producing successful outcomes.