ABUSE.MOM
THREAT REPORT

IP Threat Report
189.27.16.187

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-22 13:39:20
First seen: 2026-03-27 15:00:08
Last seen: 2026-03-27 15:00:08
68

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 68/100. Total malicious requests observed: 1.

DANGER_PATHRATIO_404METHOD
01

Geolocation & Classification

IP Address
189.27.16.187
Type
Residential
Country
🇧🇷 Brazil
City
Goiânia
ISP
Vivo
Organization
TELEF�NICA BRASIL S.A
Autonomous System
AS18881 TELEFÔNICA BRASIL S.A
Hit Count
1
02

Detection Signatures

SignatureDescriptionPointsSeverity
Danger strong hits: 1High-risk paths: shells, RCE vectors, exploits+25
Danger medium hits: 1Medium-risk: admin panels, config files+10
404 ratio >= 60%Majority of requests returned 404 — enumeration+25
POST requests presentBehavioral anomaly detected by automated analysis+8
Σ = 68
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

2026-03-27 15:00:08
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
Danger strong hits: 1 (+25), Danger medium hits: 1 (+10), 404 ratio >= 60% (+25)
2026-03-27 15:00:08
Last malicious request observed
Total score reached: 68/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

Vivo
AS18881 · 🇧🇷 Brazil
06

Recommendations

Actions taken & recommended

  • IP 189.27.16.187 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

🔎 Directory Scan Defense

IP 189.27.16.187 is enumerating directories. Configure fail2ban apache-404 jail after 10+ 404 errors. Disable directory listings. Normalize all 404 responses.

09

Blacklist Status (DNSBL)

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

⛔ LISTED
zen.spamhaus.org
⛔ LISTED
b.barracudacentral.org
✓ Clean
ix.dnsbl.manitu.net
✓ Clean
dnsbl.sorbs.net
✓ Clean
dnsbl-1.uceprotect.net
✓ Clean
bl.spamcop.net
✓ Clean
psbl.surriel.com
✓ Clean
truncate.gbudb.net

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

10

Threat Analysis

189.27.16.187 has been assigned a threat score of 68/100 (High). This score indicates high threat severity. The IP has shown clear patterns of malicious behavior that warrant immediate defensive measures.

The following attack categories were identified:

Path Enumeration

📊 Threat Analysis

Our monitoring infrastructure has identified 189.27.16.187, geolocated to Goiânia, Brazil, operating on the network of Vivo, as a source of suspicious network activity. Over a period of 1 days, this IP generated 1 malicious requests, averaging approximately 1 requests per day. This is a residential IP address, suggesting a compromised home device such as a router, smart appliance, or infected workstation participating in a botnet. The IP exhibits directory enumeration behavior, systematically requesting non-existent paths to discover hidden files and misconfigured resources. Our records show 132 malicious IPs originating from Brazil, positioning it as a significant contributor to global threat activity. The score of 68/100 warrants active monitoring and rate-limiting. Full blocking is advisable for sensitive systems.

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 Brazil

173.245.211.6 (293)20.206.78.203 (283)20.197.194.128 (280)20.197.233.108 (280)20.226.83.230 (280)View all →

🏢 Same network: AS18881

179.181.245.129 (188)189.27.166.227 (103)191.35.224.126 (103)189.59.20.14 (103)179.185.84.2 (103)View all →
12

Security Intelligence

💡 Credential Stuffing at Scale

Credential stuffing uses stolen username-password pairs from data breaches to attempt logins across many websites. Since users frequently reuse passwords, these automated attacks achieve success rates of 0.1-2%, which translates to thousands of compromised accounts from millions of attempts.

💡 Critical Infrastructure Targeting

Attacks on power grids, water systems, and transportation networks have moved from theoretical to practical threats. Industrial control systems often lack modern security features, making them vulnerable to both targeted and opportunistic attacks.

🔍 Check Any IP Address

Share this report: