The predefined External Dynamic Lists available are :- Palo Alto Networks Bulletproof IP Addresses —Contains IP addresses provided by bulletproof hosting providers. Because bulletproof hosting providers place few, if any, restrictions on content, attackers frequently use these services to host and distribute malicious, illegal, and unethical material. Known malicious IP addresses: This list includes malicious IP addresses that are currently used almost exclusively by malicious actors for malware distribution, command-and-control, or for launching various attacks. This list has been verified by our threat research team to be malicious. Palo Alto Networks - High-risk IP addresses: This list includes IP addresses that have recently been featured in threat activity advisories distributed by high-trust organizations; however, Palo Alto Networks does not have direct evidence of maliciousness. These External Dynamic Lists are available as a part of the Antivirus Dynamic Update s on the