Session Hijacking

Correct Answer: Implement TCP sequence number randomization and reset all active user sessions

In a session hijacking attack using TCP sequence number prediction, the most effective immediate action is to implement TCP sequence number randomization and reset all active user sessions. This approach addresses the root cause of the attack by making it much harder for the attacker to predict sequence numbers, which is essential for session hijacking at the network level. Simultaneously, resetting all active sessions immediately terminates the compromised session, forcing the legitimate user and the attacker to reauthenticate. The other options are less effective in this specific scenario: Deploying a packet filtering firewall that blocks all incoming TCP packets with SYN flags would prevent new connections but wouldn't stop an already hijacked session. This would also disrupt legitimate new connections to the trading platform. Enabling IPsec would be a good long-term solution for preventing future attacks by encrypting traffic, but it wouldn't help with an attack already in progress. Implementation would take time and wouldn't address the current compromise. Increasing session token complexity and extending timeout periods targets application-level session management rather than the network-level TCP sequence prediction issue described in the scenario. Longer timeouts could actually make the hijacked session usable for a longer period.

Correct Answer: Cross-Site Scripting (XSS)

Cross-Site Scripting (XSS) is the correct answer. XSS attacks involve injecting malicious JavaScript code into websites that are then executed by other users' browsers. When users visit the compromised page, the malicious script runs in their browser and can steal their session cookies, which often contain authentication information. Cross-Site Request Forgery (CSRF) is different - it tricks users into performing unwanted actions on sites where they're authenticated, but doesn't typically involve injecting JavaScript to steal cookies. Man-in-the-Browser (MitB) attacks involve malware that infects the browser itself to manipulate sessions or traffic, not injecting code into websites. Session Fixation is a technique where an attacker sets a victim's session ID to one known by the attacker before the victim logs in, rather than injecting JavaScript to steal existing cookies.

Correct Answer: Burp Suite

Burp Suite is the correct answer because it's a comprehensive web application security testing tool that offers a browser interface and HTTP proxy capabilities specifically designed for testing web applications. It's widely known for its ability to intercept SSL/TLS traffic, making it ideal for session hijacking testing in secure environments. Ettercap is primarily a network-based man-in-the-middle attack tool that focuses on ARP poisoning and network traffic analysis. While useful for session hijacking, it lacks the specialized web application testing features and browser interface that Burp Suite offers. The Hamster and Ferret combo toolkit is specifically designed for sidejacking (session hijacking via sniffed cookies) but doesn't have the comprehensive browser interface and SSL interception capabilities mentioned in the question. Wireshark is a general-purpose network protocol analyzer. Even with TCP stream reconstruction plugins, it's primarily for passive traffic analysis rather than active interception and doesn't provide the browser interface or specialized web application testing features described in the question.