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An XSS vulnerability was reported on one of the public websites of a company. The security department confirmed the finding and needs to provide a recommendation to the application owner. Which of the following recommendations will best prevent this vulnerability from being exploited? (Select two).
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Question 330 - CS0-003 discussion

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A SOC analyst observes reconnaissance activity from an IP address. The activity follows a pattern of short bursts toward a low number of targets. An open-source review shows that the IP has a bad reputation. The perimeter firewall logs indicate the inbound traffic was allowed. The destination hosts are high-value assets with EDR agents installed. Which of the following is the best action for the SOC to take to protect against any further activity from the source IP?

A.

Add the IP address to the EDR deny list.

Answers
A.

Add the IP address to the EDR deny list.

B.

Create a SIEM signature to trigger on any activity from the source IP subnet detected by the web proxy or firewalls for immediate notification.

Answers
B.

Create a SIEM signature to trigger on any activity from the source IP subnet detected by the web proxy or firewalls for immediate notification.

C.

Implement a prevention policy for the IP on the WAF

Answers
C.

Implement a prevention policy for the IP on the WAF

D.

Activate the scan signatures for the IP on the NGFWs.

Answers
D.

Activate the scan signatures for the IP on the NGFWs.

Suggested answer: A

Explanation:

In this scenario, adding the IP address to the EDR (Endpoint Detection and Response) deny list is an immediate and effective way to block further reconnaissance activities from the malicious source. EDR solutions are designed to provide advanced endpoint security, including blocking specific IP addresses and preventing potentially harmful traffic. This proactive step aligns with CompTIA Cybersecurity Analyst (CySA+) best practices for threat prevention and response. While other options, such as using SIEM for monitoring (option B) or WAF policies (option C), provide additional layers of security, they do not directly block the threat in the same immediate way that adding the IP to the EDR deny list does.

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asked 17/10/2024
Francinilo Leitao Ferreira
34 questions
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