WAFs cannot protect against client-side supply chain attacks because they don't intercept the fetch to the 3rd party endpoint and therefore have no visibility into the JavaScript files from the 3rd party sources. When attackers compromise popular libraries or CDNs, the malicious updates continue to be delivered from the same trusted domains that your WAF has whitelisted. Your WAF sees legitimate requests to approved sources and allows them through, completely unaware that the content has been weaponized by attackers.
Client-side security protects your website visitors from malicious JavaScript attacks that happen directly in their browsers.
The cost of hiring a fraudulent actor extends far beyond wasted salary expenses and in some cases has even bankrupted the victims.
Tech companies and government contractors are prime targets because they handle valuable intellectual property, source code, infrastructure credentials and sensitive data that foreign adversaries want to access.
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