The HTTP 401 Unauthorized response status code indicates that the client request has not been completed because it lacks valid authentication credentials for the requested resource. In order to access the resource client must provide a credential to access it.

There are many HTTP methods available to clients to access data and resources from server. Most used HTTP methods are GET and POST. GET request are simple and request is part for URL. It supports up to 4 KB of data sent as part of URL to the server.

cURL or Client URL is a great tool to acess different protocols programmatically or simply on command line. Over 90% of the websites on the internet are using SSL to protect themselves form unauthorized interception.

Web browsers provide security to password input via HTML input tag's type attribute, password. It prevent against shoulder surfing attacks. But still if there is a requirement to view what is being typed in the password the type's attribute need to change to text to view..

Apache Log4j is a Java-based logging utility. The Log4j vulnerability also know as Log4Shell is tracked as CVE-2021-44228. It was disclosed last week by LunaSec researchers.