CyberTech Inc. recently experienced SQL injection attacks on its official website. The company appointed Bob, a security professional, to build and incorporate defensive strategies against such attacks. Bob adopted a practice whereby only a list of entities such as the data type, range, size, and value, which have been approved for secured access, is accepted. What is the defensive technique employed by Bob in the above scenario?

1. A. Output encoding
2. B. Enforce least privileges
3. C. Whitelist validation
4. D. Blacklist validation

Correct Answer: C

Fingerprinting an Operating System helps a cracker because:

1. A. It defines exactly what software you have installed
2. B. It opens a security-delayed window based on the port being scanned
3. C. It doesn't depend on the patches that have been applied to fix existing security holes
4. D. It informs the cracker of which vulnerabilities he may be able to exploit on your system

Correct Answer: D

When you are testing a web application, it is very useful to employ a proxy tool to save every request and response. You can manually test every request and analyze the response to find vulnerabilities. You can test parameter and headers manually to get more precise results than if using web vulnerability scanners.
What proxy tool will help you find web vulnerabilities?

1. A. Maskgen
2. B. Dimitry
3. C. Burpsuite
4. D. Proxychains

Correct Answer: C

Why containers are less secure that virtual machines?

1. A. Host OS on containers has a larger surface attack.
2. B. Containers may full fill disk space of the host.
3. C. A compromise container may cause a CPU starvation of the host.
4. D. Containers are attached to the same virtual network.

Correct Answer: A

which type of virus can change its own code and then cipher itself multiple times as it replicates?

1. A. Stealth virus
2. B. Tunneling virus
3. C. Cavity virus
4. D. Encryption virus

Correct Answer: A
A stealth virus may be a sort of virus malware that contains sophisticated means of avoiding detection by antivirus software. After it manages to urge into the now-infected machine a stealth viruses hides itself by continually renaming and moving itself round the disc.Like other viruses, a stealth virus can take hold of the many parts of one’s PC. When taking control of the PC and performing tasks, antivirus programs can detect it, but a stealth virus sees that coming and can rename then copy itself to a special drive or area on the disc, before the antivirus software. Once moved and renamed a stealth virus will usually replace the detected ‘infected’ file with a clean file that doesn’t trigger anti-virus detection. It’s a never-ending game of cat and mouse.The intelligent architecture of this sort of virus about guarantees it’s impossible to completely rid oneself of it once infected. One would need to completely wipe the pc and rebuild it from scratch to completely eradicate the presence of a stealth virus. Using regularly-updated antivirus software can reduce
risk, but, as we all know, antivirus software is additionally caught in an endless cycle of finding new threats and protecting against them.
https://www.techslang.com/definition/what-is-a-stealth-virus/