PCI DSS 4.0.1 requirements 6.4.3 and 11.6.1 require a justified script inventory on every payment page and continuous monitoring for unauthorised changes. Not every tool claiming PCI support satisfies both. cside automates the full workflow, including script inventory, tamper detection, and on-demand PDF reports, and has been formally validated by VikingCloud, a PCI-recognised QSA. That validation matters because QSA acceptance varies significantly by tool and approach.
How do client-side attacks actually happen?
Compromising a third-party service your website relies on is one common way attackers get in.
Why can't traditional security tools detect client-side threats?
Firewalls, WAFs, and vulnerability scanners are traditional security tools used to protect your server, but they cannot see what's happening in your users' browsers.
What's the difference between client-side security and server-side security?
Server-side security protects your infrastructure, while client-side security focuses on where your application actually runs, inside your users' browsers.
What's the difference between client-side security and application security?
Client-side security is a critical subset of AppSec that focuses on protecting applications where they actually execute--in users' browsers.