Symantec Web Isolation operates by executing web sessions externally, allowing only a secure version of the content to be displayed in users' browsers, thus effectively blocking the entry of zero-day malware from websites to your devices. When paired with Symantec Secure Web Gateways, the system applies policies that redirect traffic from various uncategorized websites or those flagged as potentially harmful through Isolation, ensuring safe browsing experiences. Additionally, by collaborating with Symantec's messaging solutions, Web Isolation safeguards email links to thwart phishing attempts and credential theft. This mechanism ensures that emails containing links to harmful sites are unable to deliver malware, ransomware, and other sophisticated threats. Furthermore, by rendering web pages in a read-only format, it also stops users from inadvertently submitting corporate credentials or other sensitive data to untrustworthy or malicious sites, reinforcing overall cybersecurity measures. Ultimately, Web Isolation serves as a crucial layer of defense against the ever-evolving landscape of online threats.