Signs of bot traffic include:
High bounce rates (for example in your CMP statistics or analytics tool)
Low-quality leads
Anything too high or too low (100% bounce rate, 0 seconds on site)
Anything too random or too consistent (even traffic distribution every day, same outliers).
Anything that doesn’t make common sense (a high volume of visitors at night)
High traffic from a specific referral site coupled with an unusually high bounce rate
Most traffic following a specific navigation pattern (all exiting on the same web page)
For more information on how to detect bots using your own analytics data, see our article: How to detect IVT using your own analytics data