The SecOps Group CAP Exam - Topic 25 Question 99 Discussion

Actual exam question for The SecOps Group's CAP exam

Question #: 99
Topic #: 25

[All CAP Questions]

Which of the following directives in a Content-Security-Policy HTTP response header, can be used to prevent a Clickjacking attack?

Ascript-src

Bobject-src

Cframe-ancestors

Dbase-uri

Show Suggested Answer

Suggested Answer: C

Clickjacking is an attack where a malicious site overlays a transparent iframe containing a legitimate site, tricking users into interacting with it unintentionally (e.g., clicking a button). The Content-Security-Policy (CSP) HTTP response header is used to mitigate various client-side attacks, including clickjacking, through specific directives. The frame-ancestors directive is the correct choice for preventing clickjacking. This directive specifies which origins are allowed to embed the webpage in an iframe, <frame>, or <object>. For example, setting frame-ancestors 'self' restricts framing to the same origin, effectively blocking external sites from embedding the page. This is a standard defense mechanism recommended by OWASP and other security frameworks.

Option A ('script-src') controls the sources from which scripts can be loaded, addressing XSS (Cross-Site Scripting) vulnerabilities but not clickjacking. Option B ('object-src') restricts the sources of plugins or embedded objects (e.g., Flash), which is unrelated to iframe-based clickjacking. Option D ('base-uri') defines the base URL for relative URLs in the document, offering no protection against framing attacks. The use of CSP with the frame-ancestors directive is a critical topic in the CAP syllabus under 'Security Headers' and 'OWASP Top 10' (UI Redressing).

by Reiko at Aug 16, 2025, 12:06 PM

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Terrilyn

3 months ago

I thought base-uri was for something else, right?

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Gilbert

3 months ago

Definitely C, no doubt about it!

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Joesph

4 months ago

Wait, are we sure object-src doesn't help too?

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Bambi

4 months ago

C is the right one, frame-ancestors blocks it.

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Joesph

4 months ago

Totally agree, frame-ancestors is key for Clickjacking!

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Crista

5 months ago

I’m a bit confused; I thought script-src could also help with security, but now I’m leaning towards C as well.

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Loren

5 months ago

I feel like I’ve seen a question like this before, and frame-ancestors definitely stood out as the right choice for preventing Clickjacking.

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Susy

5 months ago

I'm not entirely sure, but I remember something about object-src being related to media types, not really for Clickjacking.

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Starr

5 months ago

I think the answer might be C, frame-ancestors, because it controls which sites can embed your content in frames.

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Gearldine

5 months ago

C, frame-ancestors, is the correct answer. This directive allows you to specify which domains are allowed to embed your page, which is the primary defense against Clickjacking attacks.

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Serina

6 months ago

I'm a bit confused on this one. I know the Content-Security-Policy header is important for security, but I'm not sure which specific directive is used to prevent Clickjacking. I'll have to review my notes on this topic before answering.

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Nenita

6 months ago

The frame-ancestors directive sounds like the right answer to me. It allows you to specify which domains are allowed to embed your page, which is the key to preventing Clickjacking attacks.

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Elmer

6 months ago

Hmm, I'm a bit unsure about this one. I know the Content-Security-Policy header is used to prevent various web security threats, but I can't quite remember which directive is specifically for Clickjacking. I'll have to think this through carefully.

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Teresita

6 months ago

I'm pretty sure the answer is C. The frame-ancestors directive is used to prevent Clickjacking attacks by restricting which domains can embed the current page.

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