What type of attack should Kathleen investigate if her IPS flags traffic with repeated session IDs from different IP addresses?

In this scenario, Kathleen should focus on a session replay attack. This type of attack involves capturing a valid session ID that has been previously used in a legitimate transaction and then reusing that session ID to impersonate the original user. The repeated session IDs from different IP addresses indicate that someone may be replaying a captured session, attempting to gain unauthorized access to resources by betraying the original session’s authentication.

The hallmark of session replay attacks is the reuse of valid session IDs, often seen when an attacker records network traffic, extracts session IDs, and then generates new requests using these IDs. This manifests as traffic that contains the same session identifier but originates from numerous different IP addresses, suggesting attempts to exploit the session.

Other types of attacks mentioned, like session hijacking, XSRF (Cross-Site Request Forgery), and SQL injection, do not specifically align with the behavior of repeated session IDs from varying sources in the context described. Session hijacking usually involves taking over an active session without reusing the session ID from various addresses in such a clear-cut manner. XSRF exploits user actions without appropriate validation but does not inherently relate to session IDs from diverse IPs. SQL injection focuses on database manipulation and does not involve session ID reuse. Hence