Medium Severity

Link: Numeric IP obfuscation in URL

Labels

Credential Phishing
Malware/Ransomware
Evasion
URL analysis

Description

Detects inbound messages containing links where the host is a numeric-only IP representation, commonly used to bypass domain-based URL filtering.

References

No references.

Sublime Security
Created May 28th, 2026 • Last updated Aug 6th, 2026
Feed Source
Sublime Core Feed
Source
GitHub
type.inbound
and any(body.links,
        any(.href_url.ip.translation.encoders,
            . in ('octal', 'decimal_integer')
        )
)
MQL Rule Console
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Playground

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