You are responding to a security breach at a company where attackers have targeted web applications. According to the practices advised in the OWASP Testing Guide, which of the following would be the best initial step to ensure you've secured the necessary data for a thorough analysis of the application vulnerabilities exploited in the attack?
Performing an exhaustive code review on the current web applications
Examining user behavior patterns for anomalies in application usage
Securing and analyzing the web server logs
Immediately reviewing all account integrity for signs of compromise
Ensuring the web server logs are intact and secured is crucial in the initial steps of an investigation into a web application attack. These logs will provide valuable information about the traffic to the application leading up to and during the attack, enabling the investigation team to identify patterns and potentially malicious requests that could have led to the breach. Reviewing account integrity, examining user behavior, and performing a code review are all important steps as well, but they either build upon the information gathered from logs or are later steps in a thorough investigation process.
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