Interactsh Server

Interactsh is an open-source tool for detecting out-of-band interactions. It is a tool designed to detect vulnerabilities that cause external interactions.

If you notice any interactions from * in your logs, it's possible that someone (internal security engineers, pen-testers, bug-bounty hunters) has been testing your application.

You should investigate the sites where these interactions were generated from, and if a vulnerability exists, examine the root cause and take the necessary steps to mitigate the issue.