ABUSE.MOM
THREAT REPORT

IP Threat Report
84.115.239.51

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-09-14 01:33:12
First seen: 2026-08-21 17:45:17
Last seen: 2026-08-23 02:00:35
78

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 78/100. Total malicious requests observed: 61.

DANGER_PATHMETHODRATIO_404UA_CHANGED
01

Geolocation & Classification

IP Address
84.115.239.51
Type
Residential
Country
🇦🇹 Austria
City
Vienna
ISP
Liberty Global Operations B.V
Organization
Unknown
Autonomous System
AS8412 T-Mobile Austria GmbH
Hit Count
61
02

Detection Signatures

SignatureDescriptionPointsSeverity
404 ratio >= 60%Majority of requests returned 404 — enumeration+25
Danger medium hits: 2Medium-risk: admin panels, config files+20
POST seenBehavioral anomaly detected by automated analysis+8
UA changedMultiple User-Agents — bot rotation technique+25
Σ = 78
03

Observed Activity

Reconstructed HTTP requests from server access logs. Target domains redacted for security.

[redacted]
GET
/
200
Requests shown: 1 · HTTP 404: 0 · Dangerous patterns: 0

* Typical request patterns for detected signatures. Actual target domains are redacted.

04

Timeline

2026-08-21 17:45:17
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
404 ratio >= 60% (+25), Danger medium hits: 2 (+20), POST seen (+8)
2026-08-23 02:00:35
Last malicious request observed
Total score reached: 78/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

Liberty Global Operations B.V
AS8412 · 🇦🇹 Austria
06

Recommendations

Actions taken & recommended

  • IP 84.115.239.51 is blocked at application level (HTTP 403)
  • Consider blocking at firewall level (iptables/CSF) to reduce server load
  • Report abuse to the network provider via their abuse contact
  • Ensure sensitive files (.env, .git, backups) are not accessible from the web

🔎 Path Enumeration Protection

Block scanning from 84.115.239.51: rate-limit 404 responses per IP, deploy a honeypot 404 page, ensure no backup files are web-accessible.

🤖 User-Agent Anomaly Defense

IP 84.115.239.51 shows suspicious UA behavior. Block empty User-Agent requests. Implement JavaScript-based bot detection for sensitive endpoints.

09

Blacklist Status (DNSBL)

This IP was checked against major DNS-based blacklists used by mail servers and firewalls worldwide.

✓ Clean
zen.spamhaus.org
✓ Clean
bl.blocklist.de
✓ Clean
spam.dnsbl.sorbs.net
✓ Clean
cbl.abuseat.org
✓ Clean
dnsbl.dronebl.org
✓ Clean
b.barracudacentral.org
✓ Clean
psbl.surriel.com

Checked: Spamhaus, SpamCop, Barracuda, SORBS, CBL, UCEProtect. Results may change over time.

10

Threat Analysis

84.115.239.51 has been assigned a threat score of 78/100 (High). At this threat level, the IP is considered high risk. Firewall rules should be updated to deny traffic from this source.

The following attack categories were identified:

Path EnumerationUser-Agent Anomaly

📊 Threat Analysis

Our monitoring infrastructure has identified 84.115.239.51, geolocated to Vienna, Austria, operating on the network of Liberty Global Operations B.V, as a source of suspicious network activity. The address has been active for 1 days in our monitoring system, producing 61 flagged requests at a rate of ~61/day. The address is classified as residential, meaning it likely belongs to an end-user ISP connection. Malicious activity from residential IPs typically indicates device compromise or botnet membership. The dual attack vectors of Path Enumeration combined with User-Agent Anomaly indicate a coordinated assault rather than opportunistic scanning. Austria currently accounts for 88 blocked IPs in our database, making it a notable source of malicious traffic. A threat score of 78/100 places this IP in the high-risk category. Blocking at the firewall level is recommended.

This IP is classified as residential, suggesting it may belong to a compromised home device, IoT botnet member, or an infected personal computer. Residential IPs involved in attacks often indicate malware infection without the owner's knowledge.

11

Related Threats

🇦🇹 Top threats from Austria

45.95.243.132 (280)45.95.243.145 (280)89.187.168.57 (255)45.95.243.39 (255)45.95.243.12 (255)View all →

🏢 Same network: AS8412

84.115.238.251 (68)84.115.238.228 (68)View all →
12

Security Intelligence

💡 API Abuse and Enumeration

Modern attacks increasingly target APIs rather than traditional web interfaces. Attackers enumerate endpoints, test for broken authentication, and exploit excessive data exposure. API attacks are harder to detect as they mimic legitimate programmatic access patterns.

💡 HTTP/2 and HTTP/3 Security Implications

Modern HTTP protocols introduce new attack surfaces including stream multiplexing abuse, header compression attacks (HPACK bombing), and rapid reset attacks. Security tools must evolve to handle these protocol-specific threats effectively.

🔍 Check Any IP Address

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