Google Chrome 63 will include a new security feature that will detect when third-party software is performing a Man-in-the-Middle (MitM) attack that hijacks the user’s Internet connection. A MitM attack is when an application installed on a user’s computer or a local network intercepts web traffic. Chrome will show on error when it suspects MitM attacks are occurring. Feature is not available by default in Chrome Canary, and a small trick is needed to make it appear in current distributions.
Source: https://www.bleepingcomputer.com/news/security/google-chrome-will-soon-warn-you-of-software-that-performs-mitm-attacks/