Cisco Webex Extension Prompts ‘It can: Read and change all your data on the websites that you visit Communicate with cooperating native application’

Cisco Webex Extension Prompts ‘It can: Read and alter all of your data on the websites that you browse Communicate with cooperating native application’

It can read and update all of your data on the websites that you visit. It can communicate with participating native applications. This is what the Cisco Webex Extension prompts.
The next window displays a generic warning informing you that cache, cookies, and data associated with Webex such as your saved passwords or browsing history may be accessed. Webex will never read or change any information that is not related to Webex, including but not limited to:

You have the option of installing the Cisco Webex client manually in the event that you do not desire to install the Cisco Webex Extension.