JavaScript Security Explained - How do you secure your third-party JavaScript?

Publié le: 01 février 2023
sur la chaîne: Halo Security

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While third-party JavaScript is increasingly important to modern web development, it also comes with significant risk. Learn how JavaScript might be making you vulnerable and what to do about it.

Curious to learn more about how Halo Security can help you secure your JavaScript? Learn more at: https://www.halosecurity.com/monitor-...

Transcript:
Third-party JavaScript is increasingly essential to modern web development.

These scripts help your customers log in more easily, allow your marketing team to tailor content to every user, and let support teams chat with customers.

But as the number of scripts on your website grows, so do the risks associated with them.

Scripts are often added by marketing teams via tag managers, which means they likely haven’t been vetted by your development or security team.

Unpatched vulnerabilities are another significant risk. You have little insight into whether the developers of third-party script codes are actively patching known vulnerabilities.

And as third-party tools often come and go, you may end up with unused legacy scripts on your site that run potentially unsafe code.

Third party scripts are also likely to be targeted by malicious actors as part of supply chain attacks. By injecting malicious code into a single popular script, attackers could access sensitive information across thousands of websites.

While some risk is an often unavoidable tradeoff of running valuable and important third-party scripts, how can you manage this risk?

Frequent vulnerability scanning is a key component of mitigating risk from third-party scripts. These scans highlight known vulnerabilities and potentially malicious code on your website.

Since malicious code generally has to communicate with an external server, it’s helpful to monitor your HTTP requests. If you see any new connections to unknown domains, this is a sign that something might be amiss.

You also want to make sure unnecessary or unused scripts are removed promptly through regular audits of your site’s content. The fewer exposed entry points you have, the less likely it is that an attacker is able to gain access in the first place.

While all of these steps require significant effort on your part, the time and money invested into securing your scripts far outweighs the enormous financial and reputational damage of a breach.

Halo Security’s Attack Surface Management platform has been built from the ground up by security experts to help you simplify these tasks, allowing you to create a full inventory of third-party scripts across your entire attack surface. You’ll know when new scripts are found or their contents change, and you can easily identify scripts connected to known malware or phishing.

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