The tweet discusses XSS WAF bypass techniques using Unicode and invisible character tricks for educational purposes. The techniques involve manipulating Unicode characters and using invisible characters to bypass Web Application Firewalls. This bypass technique can be used against various WAF vendors. To learn more about these techniques and their implications, visit the link provided in the tweet.
For more insights, check out the original tweet here: https://twitter.com/UndercodeUpdate/status/1928818072661447030