During a forensic investigation of a website, an analyst examines an IIS log entry to...

According to the CHFI v11 Network and Web Application Forensics objectives, IIS (Internet Information Services) logs are a primary source of evidence for reconstructing web activity, identifying attack paths, and understanding user behavior. IIS logs follow the W3C Extended Log File Format , where each field represents a specific attribute of the HTTP request or response.

The field cs(Referer) records the referring URL , which indicates the web page from which the client accessed the requested resource. In this scenario, the value

http://www.techsite.com/assets/img/logo.png

represents the page that referred the request for /images/content/bg_body_1.jpg. This information is crucial in forensic investigations to determine navigation paths, embedded content usage, malicious redirects, cross-site scripting attempts, or unauthorized resource loading .

The other options do not match this value. The server port field would contain a numeric value such as 80 or 443. The cs-method field records the HTTP method (e.g., GET or POST). The cs(User-Agent) field contains browser and operating system details, such as Chrome or Windows version strings.

CHFI v11 emphasizes analyzing cs(Referer) fields to trace attacker movement, identify compromised pages, and correlate web requests during incident reconstruction. Therefore, the value shown in the log entry belongs to the cs(Referer) field, making Option A the correct answer.