A. Rely solely on out-of-the-box XSIAM rules for web attacks, as they are generally comprehensive.

B. Create custom IOC rules based on known malicious IP addresses and URLs found in threat intelligence feeds related to web attacks.

C. Develop BIOC rules that analyze web server logs for unusual HTTP request parameters, abnormal response codes, and sequences of requests indicative of SQLi or XSS payloads, while also incorporating IOCs for known attack patterns.

D. Implement a simple keyword-based search in XSIAM for common SQLi keywords like 'SELECT FROM' and XSS keywords like '<script>'.

E. Configure network-based firewalls to block all traffic containing 'SQL' or 'XSS' in the payload.