Technically, this is a , a 128-bit number used to uniquely identify information in computer systems. In the context of web security, it has gained notoriety as a specific URL path (e.g., POST /FD873AC4-CF86-4FED-84EC-4BD59C6F17A7 ) targeted by botnets and automated scanners.
When developers or system administrators look at a string like Fd873ac4-cf86-4fed-84ec-4bd59c6f17a7 Fd873ac4-cf86-4fed-84ec-4bd59c6f17a7
Yes — let’s validate it manually and programmatically. Technically, this is a , a 128-bit number