35,35,35,char(113)||char(122)||char(106)||char(112)||char(113)||char(80)||char(119)||char(100)||char(113)||char(117)||char(88)||char(73)||char(109)||char(89)||char(113)||char(113)||char(122)||char(112)||char(120)||char(113) From: {keyword}' Union All Select

Ensure your application uses parameterized queries or prepared statements so that user input is never executed as code [4, 6].

Implement strict validation on fields like "Subject" to reject special characters or SQL keywords [4, 6].

from a legitimate query with unauthorized data using UNION ALL SELECT .

Review your server logs to see if this request originated from a suspicious IP address and monitor for any successful database extractions [5].