Critical Threat
46.19.137.194 is a maximum-risk IP address operated by Private Layer INC in Switzerland that has been linked to sustained PostgreSQL brute-force attacks, generating 894 abuse reports from honeypot sensors over a four-month period from December 2025 through March 2026.
The IP received a threat level of 10 out of 10 based on 894 total reports submitted by 20 automated honeypot sensors. Community reporting and honeypot telemetry captured this address repeatedly targeting PostgreSQL database authentication systems. The activity window spans from December 2025 to March 2026, indicating persistent rather than opportunistic scanning behaviour. The 69% confidence score reflects the reliability of the detection evidence while acknowledging some inherent uncertainty in attributing automated connection attempts to deliberate malicious intent. The network is registered in Switzerland under Private Layer INC (ASN AS51852), which may indicate a compromised host, a rogue network participant, or infrastructure being abused for credential-stuffing operations.
PostgreSQL brute-force attacks occur when an attacker systematically cycles through username and password combinations against database login endpoints. A successful intrusion grants the adversary direct access to sensitive data stores, application backends, or pivoting opportunities within the internal network. Even failed attempts consume server resources, enable reconnaissance of valid credentials, and create audit-log noise that can obscure genuine user activity. Database servers exposed to the internet without strict access controls face the highest exposure to this threat category.
Site operators should block 46.19.137.194 at the firewall or WAF level and monitor for other addresses in the same network range. Implementing fail2ban or equivalent intrusion-prevention tools to automatically ban repeat offenders after failed authentication attempts significantly reduces exposure. Enforcing strong password policies, disabling default administrative accounts, and restricting database access to trusted IP ranges are essential hardening measures. Multi-factor authentication on all database administrative interfaces provides an additional barrier even if credentials are eventually compromised.
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