What is ActiveX control?

ActiveX is a technology created by Microsoft for the functionality and sharing of applications by software. It works very well with different applications of Microsoft like internet explorer and MS Office (Word, PowerPoint, Excel). ActiveX control is generally used for the internet explorer which is a set of various technologies by component object model (COM). Any programming language can create ActiveX control which recognizes the COM of Microsoft. ActiveX control has the power of monitoring your personal browsing, generating pop-up notifications, logging into the keystrokes and passwords, installation of malware and much more. There are many privacy and security concerns with the ActiveX control that's why it is advised not to install it or if necessary then only opt for the trusted source to download.