IP Reputation
IP reputation is a score or classification indicating whether an IP address has been associated with malicious activity. Factors include appearance on blocklists, volume of spam sent, history of port scanning, C2 hosting, and abuse reports.
Frequently Asked Questions
What is IP Reputation?
IP reputation is a score or classification indicating whether an IP address has been associated with malicious activity. Factors include appearance on blocklists, volume of spam sent, history of port scanning, C2 hosting, and abuse reports.
How is IP Reputation related to Blocklist (Denylist)?
IP Reputation and Blocklist (Denylist) are both key concepts in threat intelligence. A blocklist is a list of IPs, domains, URLs, or file hashes known to be malicious. Firewalls, DNS resolvers, and email gateways use blocklists to automatically block traffic from known bad actors. Blocklists must be kept current to remain effective.
Related Terms
Blocklist (Denylist)
A blocklist is a list of IPs, domains, URLs, or file hashes known to be malicious. Firewalls, DNS resolvers, and email gateways use blocklists to automatically block traffic from known bad actors. Blocklists must be kept current to remain effective.
ASN (Autonomous System Number)
An Autonomous System Number identifies a collection of IP address ranges under the control of a single organization (an Internet Service Provider, cloud provider, or enterprise). ASNs are used in threat intelligence to identify hosting providers commonly used by attackers.
IOC (Indicator of Compromise)
An indicator of compromise is an indicator supported by evidence of compromise or malicious activity. Security teams use IOCs to detect, contain, and investigate threats; an arbitrary IP address, domain, URL, file hash, or email address is only an observable until evidence supports that promotion.
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