Answer: rootkit
Explanation:
Hi, A rootkit is a collection of computer software, typically malicious, designed to enable access to a computer or an area of its software that is not otherwise allowed (for example, to an unauthorized user) and often masks its existence or the existence of other software.
A rootkit provides continued privileged access to a computer while hiding its presence. Because of this hiding characteristic it is very difficult to detect.
Once a rootkit has been installed, it allows someone to have total remote control of a computer and do things such as files executions and system changes.
Here is an HTML example with the CSS class defined inline:
<!doctype html>
<html>
<head>
<style>
.YellowBackground {
background-color : yellow;
}
</style>
</head>
<body class="YellowBackground">
<h1>A yellow background</h1>
</body>
</html>
What do you need help with? I’m confused
You can try downloading some kind of computer cleaner like CleanMyMac X free version, also definitely restart your computer if you haven't done so already.
