Extreme Threat
IP address 181.23.107.93 is a high-risk threat actor linked to 192 reported incidents of automated SSH brute-force intrusion attempts originating from Telefonica de Argentina infrastructure in Argentina, with a threat severity rating of 10/10 and a 98% detection confidence score from 12 independent honeypot sensors.
The activity window spans March 2026, during which this IP generated concentrated attack traffic against exposed SSH services. Analysis of honeypot sensor data reveals a consistent pattern of credential-guessing activity, with automated systems making repeated authentication attempts against default or common SSH credentials. Fail2ban logging from multiple detection points confirmed at least 10 violations attributable to this single source, indicating sustained, high-volume probing rather than isolated opportunistic scans. The network operator, AS22927 (Telefonica de Argentina), serves a major telecommunications provider in Argentina, meaning this activity originated from infrastructure supporting potentially thousands of end users.
SSH brute-force attacks represent one of the most prevalent and effective initial-access vectors in network intrusion campaigns. Automated tools systematically iterate through username-password combinations until valid credentials are discovered, granting attackers a foothold on targeted servers. Once inside, threat actors typically expand privileges, exfiltrate data, or establish persistent backdoor access. The frequency rating of 8/10 for this IP signals persistent rather than opportunistic behavior, and the high report volume indicates active, ongoing targeting of vulnerable SSH endpoints across multiple honeypot sensors simultaneously.
Network defenders should immediately block 181.23.107.93 at the firewall or network perimeter level. Implementing fail2ban or equivalent intrusion-prevention tools to automatically ban repeat offenders after failed login thresholds significantly reduces exposure. Transitioning to key-based SSH authentication eliminates the attack surface for credential-guessing entirely, while disabling root login and changing the default SSH port reduces automated target acquisition. Continuous log monitoring for similar patterns from adjacent IP ranges is recommended to identify coordinated campaigns early.
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