Will PCI compliance certification mean that there will be no breaches of data or cardholder information would not be at risk?

The PCI DSS is not completely secure or hacker-proof. However, they are a standard set of fundamental security controls framed to deal with the most common risk scenarios and known attack vectors identified by the PCI SSC. It’s practically impossible for PCI DSS to anticipate every possible attack scenario. Nonetheless, PCI SSC continues to keep the protocol updated. While PCI SSC is constantly working to monitor threats and improve the industry’s means of dealing with them, ultimately, it’s each organization’s responsibility to provide credit card data security.