alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"ET WEB_SERVER Possible ALTER SQL Injection Attempt"; flow:to_server,established; http.uri; content:"ALTER"; nocase; pcre:"/^\s+(?:database|procedure|table|column)/Ri"; reference:url,www.owasp.org/index.php/SQL_Injection; reference:url,www.w3schools.com/SQl/sql_alter.asp; classtype:web-application-attack; sid:2010084; rev:7; metadata:affected_product Web_Server_Applications, attack_target Web_Server, created_at 2010_07_30, deployment Datacenter, confidence Medium, signature_severity Major, tag SQL_Injection, updated_at 2020_09_14, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)