SQL injection is a type of attack that exploits a database misconfiguration or a flaw in the application code that interacts with the database. An attacker can inject malicious SQL statements into the user input fields or the URL parameters that are sent to the database server. These statements can then execute unauthorized commands, such as reading, modifying, deleting, or creating data, or even taking over the database server. SQL injection can compromise the confidentiality, integrity, and availability of the data and the system. Reference: CompTIA Security+ Study Guide: Exam SY0-701, 9th Edition, page 215 1

The next step should be to rescan the network. In vulnerability management, remediation is not complete simply because the operations team says fixes were applied. The security team must validate that the vulnerabilities are actually resolved. A rescan confirms whether patches, configuration changes, service removals, or compensating controls eliminated the previously identified weaknesses. Conducting an audit is broader and not the immediate technical validation step. Starting a penetration test may be useful later, but it is unnecessary before confirming that the known vulnerabilities were fixed. Submitting a report before validation could produce inaccurate closure information. Security+ expects vulnerability management to follow a cycle: identify, analyze, remediate, validate, and report. Validation is done through rescanning.

In this scenario, employees are attempting to navigate to spoofed websites, which is being blocked by the web filter. To address this issue, the administrator should implement security awareness training. Training helps employees recognize phishing and other social engineering attacks, reducing the likelihood that they will attempt to access malicious websites in the future.
* Deploying multifactor authentication (MFA) would strengthen authentication but does not directly address user behavior related to phishing websites.
* Decreasing the level of the web filter would expose the organization to more threats.
* Updating the acceptable use policy may clarify guidelines but is not as effective as hands-on training for improving user behavior.

Firmware is a type of software that is embedded in a hardware device, such as a router, a printer, or a BIOS chip. Firmware controls the basic functions and operations of the device, and it can be updated or modified by the manufacturer or the user. Firmware version is a hardware-specific vulnerability, as it can expose the device to security risks if it is outdated, corrupted, or tampered with. An attacker can exploit firmware vulnerabilities to gain unauthorized access, modify device settings, install malware, or cause damage to the device or the network. Therefore, it is important to keep firmware updated and verify its integrity and authenticity. Reference = CompTIA Security+ Study Guide with over 500 Practice Test Questions: Exam SY0-701, 9th Edition, Chapter 2, page 67. CompTIA Security+ SY0-701 Exam Objectives, Domain 2.1, page 10.