This detection rule identifies potential open redirect vulnerabilities in URLs originating from the 'business.google.com' domain, specifically targeting the 'website_shared/launch_bw.html' endpoint with the 'f' parameter in the query string. The rule is crucial in recognizing attempts to exploit these redirects in phishing campaigns that aim to redirect users to malicious sites. The detection logic examines inbound messages for URLs matching the specified criteria, ensuring they do not loop back to legitimate Google domains as this could indicate safe behavior. It also incorporates checks against well-known high trust sender domains and accounts for failures in DMARC authentication to minimize false positives.