What is Clickjacking?

Clickjacking is an interface-based attack that tricks a user into clicking on content in a decoy website, while the actual click interacts with actionable content in a hidden website. This can cause users to unwittingly download malware, visit malicious web pages, transfer money, provide credentials or sensitive information, or make online purchases.

Defending against Clickjacking

  1. Using content/ad blockers- Customers can protect themselves when visiting websites by using ad or content blockers. These tools use updated block lists to prevent malicious content from rendering on your browser, reducing the risk of clickjacking attacks.
  2. Vulnerability Scanning- Compromised WordPress social media plugins may redirect likes and shares to malicious content. Scan your applications with a vulnerability scanner for protection.
  3. X-Frame-Options- X-Frame-Options is an HTTP header option that is used to specify whether a page can be embedded in a <frame >, <iframe >, <embed> or <object> element.
    There are three possible values for X-Frame-Options:

  4. X-Frame-Options: deny

    The page cannot be displayed in a frame, regardless of the site attempting to do so.

    X-Frame-Options: sameorigin

    The page can only be displayed in a frame on the same origin as the page itself.

    X-Frame-Options: allow-from http://example.com

    The page can only be displayed in a frame on the specified origin.

  5. Content-Security-Policy- Content-Security-Policy, like X-Frame-Options, includes a set of several HTTP-based headers that help you secure your web application.
    • To allow restricting of frames to self (similar to selforigin) which allows only embedding from the same website-
      Content-Security-Policy: frame-ancestors 'self';
    • To allow only the defined sites for embedding and deny everything else-
      Content-Security-Policy: frame-ancestors www.example.com www.example2.com;

Configuring Apache

To configure Apache to send the X-Frame-Options header for all pages, add this to your site's configuration file(httpd.conf):
Header always append X-Frame-Options SAMEORIGIN

Note: If your website is hosted on shared web hosting, you will not be able to modify httpd.conf file directly. However, you can implement this setting by adding the following line in the .htaccess file.

Configuring IIS

To configure IIS to add an X-Frame-Options header to all responses for a given site, follow these steps:

  • Open Internet Information Services (IIS) Manager.
  • In the Connections pane on the left side, expand the Sites folder and select the site that you want to protect.
  • Double-click the HTTP Response Headers icon in the feature list in the middle

  • In the Actions pane on the right side, click Add.
  • In the dialog box that appears, type X-Frame-Options in the Name field and type SAMEORIGIN or DENY in the Value field.

  • Click OK to save your changes.

To configure IIS to send the X-Frame-Options header, add the following code to your site's Web.config file:

            <add name="X-Frame-Options" value="SAMEORIGIN" />

Author Avatar

Sneha Kelkar

Cyber Security Analyst

Location: Pune, India

Sneha Kelkar is an enthusiast in the field of network and web security. She primarily focuses on vulnerability assessment and penetration testing for IT infrastructure networks, web applications, and cloud applications. She enjoys staying updated on the latest news in cybersecurity hacking and aspires to become an accomplished ethical hacker. Fluent in the French language, Sneha combines a deep understanding of technology with a passion for an eclectic mix of interests, including performing arts, economics, politics, and poetry.