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.
Yes, because client-side security monitors an entirely different dimension of the application stack.
cside only adds 8-20 milliseconds to specific dynamic JavaScript files we proxy, with static scripts cached for faster loading.
cside is much simpler because we're only handling JavaScript files, not your entire web infrastructure.
Your website will continue working as intended with our fail-open design and 99.99% uptime SLA.