Firstly please remove your IP adress from your post since it's generally not a good idea to share it, because of malicious users using it to possibly break into your computer. The warning you are mentioning occurs when Google has detected that an unusual amount of traffic has been coming from your system. What this means is that you may have done a lot of google searching, or maybe some malware ('the bot') has done some suspicious activities. The problem is not in Firefox, but rather in the great amount of traffic Google has detected when you were using the web. It's not possible to give the exact reason why this might be occuring right now, but I recommend scanning for viruses with your anti-virus and removing all the viruses you find. I've also encountered this message a few times when researching topics like cyber security about a year ago. It's pretty logical Google found this suspicious as well, because I didn't research the topic before and things like 'hacking' can obviously be misused. To continue browsing you need to enter and submit the chapta. Hopefully doing a quick scan for viruses will stop this from occuring again.