Why do I need to finish a CAPTCHA?
Completing the CAPTCHA proves you are a human and provides you temporary access to the web residential or commercial property.
What can I do to avoid this in the future?
If you are on a personal connection, like in your home, you can run an anti-virus scan on your device to make sure it is not infected with malware.
If you are at an office or shared network, you can ask the network administrator to run a scan throughout the network looking for misconfigured or contaminated devices.
Another way to prevent getting this page in the future is to use Personal privacy Pass. You might require to download variation 2.0 now from the Firefox Add-ons Store.