A 51% attack is an attack on a blockchain launched by an entity possessing 51% or more of the network’s mining potential.
A verification code is a code sent to verify a user's identity.
A "trustless" network is a network where transactions can occur without the need for users to trust one another.
Security audits are regular checkups on the safety of a company’s information technology system.
Ransomware is a malware that attackers use to steal and encrypt victims’ files which would then be taken “hostage” by them, “liberated” only if a ransom is paid.