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The CySA+ certification is recognized globally as a standard for cybersecurity professionals. It is a vendor-neutral certification that is accepted by a wide range of organizations, including government agencies, corporations, and nonprofit organizations. CompTIA Cybersecurity Analyst (CySA+) Certification Exam certification demonstrates to employers that the candidate has the knowledge and skills required to perform the tasks related to cybersecurity analysis and can be trusted to protect the organization's data and assets.

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CompTIA Cybersecurity Analyst (CySA+) Certification Exam Sample Questions (Q483-Q488):

NEW QUESTION # 483
An analyst investigated a website and produced the following:
Starting Nmap 7.92 ( https://nmap.org ) at 2022-07-21 10:21 CDT
Nmap scan report for insecure.org (45.33.49.119)
Host is up (0.054s latency).
rDNS record for 45.33.49.119: ack.nmap.org
Not shown: 95 filtered tcp ports (no-response)
PORT STATE SERVICE VERSION
22/tcp open ssh OpenSSH 7.4 (protocol 2.0)
25/tcp closed smtp
80/tcp open http Apache httpd 2.4.6
113/tcp closed ident
443/tcp open ssl/http Apache httpd 2.4.6
Service Info: Host: issues.nmap.org
Service detection performed. Please report any incorrect results at https://nmap .org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 20.52 seconds
Which of the following syntaxes did the analyst use to discover the application versions on this vulnerable website?

Answer: C

Explanation:
The analyst used the command nmap -sV -T4 -F insecure.org to discover the application versions on the vulnerable website. The -sV option in Nmap is used to perform version detection, which identifies the versions of the services running on open ports. The -T4 option sets the timing template for faster execution, and -F scans only the most common ports.


NEW QUESTION # 484
The most recent vulnerability scan results show the following

The vulnerability team learned the following from the asset owners:
* Server hqfinoi is a financial transaction database server used in the company's largest business unit.
* Server hqadmin02 is utilized by an end user with administrator privileges to several critical applications.
* No compensating controls exist for either issue.
Which of the following would the vulnerability team most likely do to determine remediation prioritization?

Answer: C

Explanation:
When two vulnerabilities are both high severity (CVSS 8.1 and 8.5) and no compensating controls exist, the deciding factor for remediation prioritization becomes business impact and asset criticality/value (what matters most to the organization if compromised or taken offline for remediation).
That is exactly what a Business Impact Analysis (BIA) is used for: it is a formalized method to determine asset criticality/value designations and to prioritize response/remediation work based on business impact.
Supporting exact extracts:
The Secbay Press CS0-003 guide explicitly states that Business Impact Analysis is used to align vulnerability prioritization with critical business functions:
Exact extract (Secbay Press): "Business Impact Analysis: ... Considers the potential impact of vulnerabilities on critical business functions ... prioritizing vulnerabilities that could impact core business processes." It also describes the vulnerability prioritization process as combining severity/exploitability with asset criticality assessment (which is informed by business owners and BIA outputs):
Exact extract (Secbay Press): "Asset Criticality Assessment: Evaluate the criticality of assets affected... Consider the importance of assets in business operations, data sensitivity, and regulatory compliance." The All-in-One CS0-003 guide reinforces that asset value (sensitivity + criticality) is one of the most important drivers of remediation timing/prioritization:
Exact extract (All-in-One Exam Guide): "Asset value is... one of the most important factors in determining how quickly you should remediate vulnerabilities..." and asset value is tied to "sensitivity and criticality." Applying this to the scenario HQFIN01 supports financial transactions for the largest business unit → typically extremely high criticality (availability) and often high sensitivity/integrity requirements.
HQADMIN02 is used by a privileged user and could be high risk too (admin access), but the question asks what the team would do to determine prioritization: the correct step is to reference BIA/value designation and then prioritize based on which asset is more critical to business operations.
Why the other options are incorrect
A (Review BCP and patch what takes longer to bring online): BCP/DR planning is not the primary method for vulnerability remediation ranking; prioritization is risk-based and commonly driven by asset criticality/business impact (BIA), not "time to bring online." B (Fix the faster one first): Speed of remediation is not the main driver; risk reduction and business impact are.
D (Least recent backups): Backup recency matters for recovery and resilience, but it's not the primary determinant for vulnerability remediation priority versus asset criticality and business impact.
Reference (CompTIA CySA+ CS0-003 documents / study guides used):
Secbay Press, CompTIA CySA+ Exam Prep Guide (CS0-003): BIA used to prioritize vulnerabilities impacting critical business functions; asset criticality assessment in prioritization process


NEW QUESTION # 485
The Chief Information Security Officer (CISO) wants the same level of security to be present whether a remote worker logs in at home or at a coffee shop. Which of the following should be recommended as a starting point?

Answer: D

Explanation:
* Non-persistent Virtual Desktop Infrastructure (VDI) is the best solution because:
* Users access a centrally managed, secure virtual desktop regardless of location.
* No data is stored locally, preventing data theft on compromised devices.
* Each session is reset upon logout, eliminating malware persistence.
Why Not Other Options?
* B (Passwordless authentication) # Improves security but does not ensure the same security level across different locations.
* C (Standard-issue laptops) # Helps with consistency but does not protect against untrusted networks.
* D (Serverless workloads) # Focuses on application infrastructure, not user security.


NEW QUESTION # 486
A WAF weekly report shows that a daily spike occurs from the same subnet. An open-source review indicates the IP addresses belong to a legitimate internet service provider but have been flagged for DDoS attacks and reconnaissance scanning in the past year. Which of the following actions should a SOC analyst take first in response to these traffic uptick activities?

Answer: B


NEW QUESTION # 487
While a security analyst for an organization was reviewing logs from web servers. the analyst found several successful attempts to downgrade HTTPS sessions to use cipher modes of operation susceptible to padding oracle attacks. Which of the following combinations of configuration changes should the organization make to remediate this issue? (Select two).

Answer: A,E

Explanation:
The correct answer is A. Configure the server to prefer TLS 1.3 and B. Remove cipher suites that use CBC.
A padding oracle attack is a type of attack that exploits the padding validation of a cryptographic message to decrypt the ciphertext without knowing the key. A padding oracle is a system that responds to queries about whether a message has a valid padding or not, such as a web server that returns different error messages for invalid padding or invalid MAC. A padding oracle attack can be applied to the CBC mode of operation, where the attacker can manipulate the ciphertext blocks and use the oracle's responses to recover the plaintext12.
To remediate this issue, the organization should make the following configuration changes:
* Configure the server to prefer TLS 1.3. TLS 1.3 is the latest version of the Transport Layer Security protocol, which provides secure communication between clients and servers. TLS 1.3 has several security improvements over previous versions, such as:
* It deprecates weak and obsolete cryptographic algorithms, such as RC4, MD5, SHA-1, DES,
3DES, and CBC mode.
* It supports only strong and modern cryptographic algorithms, such as AES-GCM,
* ChaCha20-Poly1305, and SHA-256/384.
* It reduces the number of round trips required for the handshake protocol, which improves performance and latency.
* It encrypts more parts of the handshake protocol, which enhances privacy and confidentiality.
* It introduces a zero round-trip time (0-RTT) mode, which allows resuming previous sessions without additional round trips.
* It supports forward secrecy by default, which means that compromising the long-term keys does not affect the security of past sessions3456.
* Remove cipher suites that use CBC. Cipher suites are combinations of cryptographic algorithms that specify how TLS connections are secured. Cipher suites that use CBC mode are vulnerable to padding oracle attacks, as well as other attacks such as BEAST and Lucky 13. Therefore, they should be removed from the server's configuration and replaced with cipher suites that use more secure modes of operation, such as GCM or CCM78.
The other options are not effective or necessary to remediate this issue.
Option C is not effective because configuring the server to prefer ephemeral modes for key exchange does not prevent padding oracle attacks. Ephemeral modes for key exchange are methods that generate temporary and random keys for each session, such as Diffie-Hellman or Elliptic Curve Diffie-Hellman. Ephemeral modes provide forward secrecy, which means that compromising the long-term keys does not affect the security of past sessions. However, ephemeral modes do not protect against padding oracle attacks, which exploit the padding validation of the ciphertext rather than the key exchange9.
Option D is not necessary because requiring client browsers to present a user certificate for mutual authentication does not prevent padding oracle attacks. Mutual authentication is a process that verifies the identity of both parties in a communication, such as using certificates or passwords. Mutual authentication enhances security by preventing impersonation or spoofing attacks. However, mutual authentication does not protect against padding oracle attacks, which exploit the padding validation of the ciphertext rather than the authentication.
Option E is not necessary because configuring the server to require HSTS does not prevent padding oracle attacks. HSTS stands for HTTP Strict Transport Security and it is a mechanism that forces browsers to use HTTPS connections instead of HTTP connections when communicating with a web server. HSTS enhances security by preventing downgrade or man-in-the-middle attacks that try to intercept or modify HTTP traffic.
However, HSTS does not protect against padding oracle attacks, which exploit the padding validation of HTTPS traffic rather than the protocol.
Option F is not effective because removing cipher suites that use GCM does not prevent padding oracle attacks. GCM stands for Galois/Counter Mode and it is a mode of operation that provides both encryption and authentication for block ciphers, such as AES. GCM is more secure and efficient than CBC mode, as it prevents various types of attacks, such as padding oracle, BEAST, Lucky 13, and IV reuse attacks. Therefore, removing cipher suites that use GCM would reduce security rather than enhance it .
References:
* 1 Padding oracle attack - Wikipedia
* 2 flast101/padding-oracle-attack-explained - GitHub
* 3 A Cryptographic Analysis of the TLS 1.3 Handshake Protocol | Journal of Cryptology
* 4 Which block cipher mode of operation does TLS 1.3 use? - Cryptography Stack Exchange
* 5 The Essentials of Using an Ephemeral Key Under TLS 1.3
* 6 Guidelines for the Selection, Configuration, and Use of ... - NIST
* 7 CBC decryption vulnerability - .NET | Microsoft Learn
* 8 The Padding Oracle Attack | Robert Heaton
* 9 What is Ephemeral Diffie-Hellman? | Cloudflare
* [10] What is Mutual TLS? How mTLS Authentication Works | Cloudflare
* [11] What is HSTS? HTTP Strict Transport Security Explained | Cloudflare
* [12] Galois/Counter Mode - Wikipedia
* [13] AES-GCM and its IV/nonce value - Cryptography Stack Exchange


NEW QUESTION # 488
......

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