Which regex matches only on all lowercase letters?

What does cyber attribution identity in an investigation?

An analyst received an alert on their desktop computer showing that an attack was successful on the host.
After investigating, the analyst discovered that no mitigation action occurred during the attack. What is the reason for this discrepancy?

What are two differences in how tampered and untampered disk images affect a security incident? (Choose two.)

What is a difference between signature-based and behavior-based detection?