Putlocker is common name of file hosting websites and cloud storage, used for streaming of entertainment media. Due to piracy and security issues, Putlocker domains are blocked in most countries. However, there are over 50 mirrors of initial website, and they are using unethical marketing methods to deliver their content to users. Putlocker can be distributed by browser add-on, pop-ups and other types of unwanted advertising. Once shown to the user, Putlocker offers to subscribe to its notifications, and, if accepted, starts to display annoying notifications about movies, TV series directly on the desktop.