The file that is extractable via TCP stream within Wireshark is the one that has the Content-Type header set to application/octet-stream, which indicates binary data. Thisheader is present in frames 7, 14, and 21, which are part of the same TCP stream. The other frames have different Content-Type headers, such as text/html or image/jpeg, which are not extractable as binary files. References := Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) v1.0, Module 3: Network Intrusion Analysis, Lesson 3.2: Analyze Data from Common TCP/IP Protocols, Topic 3.2.3: HTTP

The /var/log/auth.log file contains information about authentication and authorization events on a Linux system, such as successful and failed logins, sudo commands, and SSH sessions. The output in the exhibit shows a failed login attempt from a user named "root" using SSH. References: https://www.cisco.com/c/en/us
/td/docs/security/ise/2-4/admin_guide/b_ise_admin_guide_24/b_ise_admin_guide_24_new_chapter_01101.
html

According to the NIST Incident Handling Guide, the analysis phase is the next phase of this investigation.
The analysis phase involves examining the evidence and determining the impact, scope, and cause of the incident. The analyst should also identify the attacker's methods, tools, and objectives, as well as any indicators of compromise or malicious activity. The analysis phase may also involve collecting additional data, such as logs, network traffic, or malware samples, to support the investigation. The analysis phase is crucial for developing an effective response and recovery strategy, as well as preventing or mitigating future incidents. References:
NIST Special Publication 800-61 Revision 2, Computer Security Incident Handling Guide, Section 3.2.4, Analysis (https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-61r2.pdf) Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) v1.0, Module 5: Security Incident Response, Lesson 5.2: Incident Response Process, Topic 5.2.3: Analysis Phase (https://learningnetworkstore.
cisco.com/on-demand-e-learning/understanding-cisco-cybersecurity-operations-fundamentals-cbrops-v1-0
/CSCU-LP-CBROPS-V1-028093.html)

* SQL injection is a type of injection attack where malicious SQL statements are inserted into an entry field for execution.
* The primary way to prevent SQL injection is by validating and sanitizing user input. This involves checking the input for malicious content and ensuring it adheres to expected patterns.
* Prepared statements (parameterized queries) are also highly effective, as they treat user input as data rather than executable code.
* Implementing these practices ensures that any input received from users does not manipulate SQL queries in a harmful way.
References
* OWASP SQL Injection Prevention Cheat Sheet
* Best Practices for Input Validation and Sanitization
* Secure Coding Guidelines

Sliding window anomaly detection is a technique used in cybersecurity to identify unusual patterns or behaviors that deviate from the norm. It involves analyzing segments of data over a period of time, referred to as a 'window,' and comparing them against typical patterns. Anomalies are detected when observed behaviors significantly differ from expected patterns, indicating potential security incidents or issues that require further investigation. References: An adaptive sliding window for anomaly detection of time series in wireless sensor networks