Substantial Risk
IP 3.131.220.121 is a high-risk address operated within the AMAZON-02 autonomous system (AS16509) that has generated 1,596 abuse reports across automated honeypot sensors with a threat level of 8 out of 10, indicating sustained and aggressive malicious activity originating from a US-based cloud infrastructure provider.
The IP was first reported in February 2026 and most recently in July 2026, representing a six-month window of continuous hostile probing activity with an activity frequency score of 8 out of 10. Detection data from 20 separate honeypot sensors documents a diverse attack profile dominated by general hacking intrusion attempts (18 recent reports), supplemented by IoT-targeted probes (2 reports) and web application reconnaissance (1 report). The high volume of total reports combined with an 85% confidence score suggests this is not an isolated incident or misconfiguration but rather systematic, automated exploitation activity being conducted from Amazon Web Services infrastructure.
The dominant hacking category encompasses broad unauthorized access attempts, vulnerability scanning, and exploitation probing against exposed services. This pattern poses concrete risk to any publicly accessible systems, as the volume of reports indicates persistent automated scanning rather than a single targeted attack. The secondary IoT-targeted activity suggests the address is also being used to scout for poorly secured connected devices, while the web application probe indicates interest in application-layer vulnerabilities. The geographic origin within US cloud infrastructure is notable because many defensive systems apply geographic exception rules that may inadvertently whitelist traffic from major US cloud providers, potentially allowing this malicious traffic to bypass basic geographic filtering.
Site operators should implement immediate defensive measures including blocking or rate-limiting this address at the firewall level, deploying fail2ban or similar dynamic blocking tools to automatically respond to repeated connection attempts, and reviewing public-facing services for unnecessary exposure. Network segmentation of IoT devices and deployment of a web application firewall would specifically address the secondary threat categories observed. Regular security audits and prompt patching of vulnerabilities remain essential given the ongoing scanning activity documented across the six-month reporting window.
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