According to haveIbeenpwned.com, close to 8 billion accounts have been compromised. The site provides a tool to see if any of your passwords have been compromised and are available on the dark-net. Once passwords are compromised, they are easily exposed to bad actors who can use them for brute force attacks and credential stuffing.
Credential Compromise has been a leading attack vector for the last five years. There are a variety of ways that attackers can do this. It could be by guessing passwords, phishing emails, spyware, or even pulling credentials out of memory. To detect and more proactively defend against credential compromise, organizations need to have visibility into identity, behavior and risk as well as the ability to automatically respond or take action when signs of compromise have been detected.