Client-side attacks stemming from hijacked third-party scripts are an underappreciated, but significant issue organizations should be addressing. In fact, any organization transacting online must have client-side protection in place when the transition period for PCI DSS version 4.0 ends and becomes mandatory. But beyond that regulatory motivation, it simply makes business sense. There are countless examples of companies that lost customer trust due to cybersecurity incidents of one kind or another. Once lost, that trust can be difficult and expensive to rebuild. By ensuring that the third-party scripts running on their website are legitimate and benign, security and web teams can help protect their brand and their customers’ sensitive personal data.