Question 1

What is IP reputation and risk scoring?

Accepted Answer

IP reputation scoring evaluates whether an IP address is associated with malicious activity like spam, botnets, malware distribution, or phishing. Risk scores help security teams decide whether to block, challenge, or allow traffic from specific IP addresses.

Question 2

How are IP addresses flagged as risky?

Accepted Answer

IP addresses are flagged based on observed behavior including spam sending, port scanning, brute force attempts, malware hosting, botnet participation, and appearance on threat intelligence feeds. Multiple security vendors maintain reputation databases updated in real-time.

Question 3

What should I do if my IP is flagged?

Accepted Answer

If your IP is incorrectly flagged, contact the reputation services to request delisting. For legitimate flags, investigate for compromised systems, clean any malware, change passwords, and implement better security controls before requesting removal.

Question 4

Can VPNs or proxies affect IP risk scores?

Accepted Answer

Yes. VPN and proxy IP addresses often have higher risk scores because they're shared by many users and attackers frequently use them. Some services specifically flag datacenter, hosting, and VPN IPs as higher risk regardless of actual malicious activity.

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