Medium Severity

Link: Google Cloud Storage with echo-tail od= tracking token

Description

Detects Google Cloud Storage links carrying an od= affiliate click token (head with 13 hex counter, then account, record, and a 5 character echo of the record before a base64 tail), with or without a redirect.html fragment. Observed in fake account suspension, payment and prize spam.

References

No references.

Sublime Security
Created Oct 6th, 2026 • Last updated Oct 6th, 2026
Source
type.inbound
and any(body.links,
        .href_url.domain.domain == "storage.googleapis.com"
        and regex.contains(.href_url.fragment,
                           '[?&]od=[0-9][a-z]{2,3}[0-9A-Za-z_]*[./][0-9a-z]{6,7}[./][a-z]{0,3}[A-Z][0-9a-z]{10,24}_x[a-z]{0,3}\d{3,5}[a-z]{0,3}[./][0-9a-z]{5}[A-Za-z0-9+/_\]]{14,}'
        )
)
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