Remote client performs MongoDB service validation and environment fingerprinting by first initiating a wire-protocol handshake (ismaster / hello) followed by execution of the buildInfo command against the admin database. This sequence indicates targeted reconnaissance to determine server role, software version, build characteristics, and platform details. Such activity is commonly associated with automated scanning frameworks and pre-exploitation tooling used to assess exposure and identify version-specific vulnerabilities prior to authentication attempts or database enumeration

FTP session where the client issues AUTH TLS to upgrade the connection to Transport Layer Security. This reflects protocol-level encryption negotiation prior to further interaction.

Identifies HTTPS requests targeting the web server root path ("/"), typically used for initial service discovery, host validation, or baseline content inspection prior to deeper enumeration

Automated SMTP interaction performing a minimal capability check by issuing EHLO followed by a STARTTLS upgrade request and immediately terminating the session. This pattern is commonly associated with internet-wide scanners, security research crawlers, or opportunistic bots verifying whether an SMTP service supports encrypted communication. The absence of authentication attempts or message submission indicates reconnaissance or service fingerprinting rather than active abuse.

Identifies execution of the Redis INFO command (case-insensitive), which retrieves server configuration, version, memory usage, and runtime statistics. This behavior reflects service interrogation and environment fingerprinting activity. While INFO can be used legitimately by administrators, it is also commonly observed during automated scanning and pre-exploitation reconnaissance of exposed Redis instances.