Which two of the following statements are true about host-based anti-virus software? (Choose two.)
A . User identity detection is embedded in most antivirus software code.
B . Most antivirus software uses signature-based malware detection.
C . Antivirus software is wholly dependent on running scans to find malware that has already obtained a foothold on a system.
D . Antivirus software may use heuristics with other methods to detect malware.
Answer: BD