Substantial Risk
IP 3.131.220.121 is a high-risk address operated within Amazon's AWS infrastructure (AS16509, AMAZON-02) that has accumulated 1,561 abuse reports between February and July 2026, with activity frequency rated 8/10, indicating persistent and repeated malicious behaviour against exposed services.
The volume of reports associated with this IP is substantial, with all 21 recent categorised incidents sourced from automated honeypot sensors detecting intrusions and exploitation attempts. Of these recent reports, 20 classified the activity as general hacking attempts and one as an exploited host, suggesting this address may simultaneously serve as an active attack platform while potentially also operating under the control of a threat actor without the legitimate operator's awareness. The geographic location in the United States and the AWS hosting context are notable because cloud infrastructure is frequently abused as a staging ground for attacks due to its reputation for legitimate traffic and broad IP reach. The detection window spanning approximately six months demonstrates sustained, deliberate targeting rather than isolated scanning.
The dominant hacking classification encompasses a range of intrusion methodologies, including vulnerability exploitation, credential attacks, and unauthorized access attempts against exposed services. When combined with the "malware/exploit activity" attack pattern, this IP presents a concrete risk of delivering malicious payloads or facilitating initial access to vulnerable systems. An exploited host classification further compounds this risk, indicating that the address itself may be compromised and weaponised without the knowledge of its owner, meaning blocking only at the network perimeter may be insufficient if the underlying compromise remains unaddressed.
Site operators should block IP 3.131.220.121 at the firewall or network perimeter as an immediate containment measure. Implement rate-limiting on exposed services to disrupt brute-force and scanning patterns, and enforce strong authentication mechanisms such as key-based authentication and multi-factor authentication to reduce the effectiveness of intrusion attempts. Keep all systems and services fully patched to mitigate the vulnerabilities this address targets. Consider reporting the IP to AWS abuse handling via their standard channels, as the "exploited host" classification suggests the legitimate operator may need notification about potential compromise of their infrastructure.
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