Proxy server and navigation code injection to prevent malicious messaging attacks

A method comprising:

• transmitting, by a proxy server associated with a first computing device, an email from a second computing device to the first computing device, wherein the email comprises a static webpage link to a static webpage on the proxy server, and wherein the static webpage link comprises a uniform resource locator (URL) prefix for the static webpage on the proxy server inserted prior to an online webpage link to an online webpage with an external server;
• receiving a clickthrough event of the static webpage link in the email from the first computing device;
• and
• causing to be displayed, on the first computing device, the static webpage on the proxy server in place of the online webpage with the external server.

A non-transitory machine-readable medium having stored thereon machine-readable instructions executable to cause a machine to perform operations comprising:

• detecting a message from an external entity by a proxy server;
• identifying that the message includes a link to an external website, wherein the external website comprises website data;
• determining the website data by the proxy server;
• generating a hypertext markup language (HTML) document on the proxy server for the website data, wherein the HTML document prevents execution of processes within the website data;
• adding IP address code to the proxy server to the link to the external website;
• and
• replacing the link in the message with a HTML document link to the HTML document based on the adding the IP address code to the link.