Cside is much simpler because we're only handling JavaScript files, not your entire web infrastructure. With a WAF, you need to configure rules for all your traffic, manage SSL certificates, handle different content types, and worry about breaking legitimate requests. A WAF also has no overlap with cside, as a WAF monitors inbound requests, not client-side activity or server responses to the client-side. While some WAF vendors inject Content Security Policies, we built cside from the ground up to address client-side security by design and not as an afterthought. With cside, you simply add our NPM package or include a single script tag on your pages and configure which third-party scripts you want us to analyze. There's no need to restructure your entire web architecture or manage complex proxy rules.
CSP is a great base-layer for client-side security, but it cannot see script contents. Depending on your needs and risk profile, it may or may not be sufficient.
PCI DSS requires monitoring scripts for changes. CSP can only control sources, not inspect payloads, so it cannot meet PCI DSS requirements.
We fundamentally believe every individual and operation should be able to secure themselves, regardless of resources.
Because client-side security monitors an entirely different dimension of the application stack, there is no interference.