When pentesters investigate a site, they may use automatic tools to quickly check for different vectors to ensure that you are being covered across many areas. The amount of traffic and requests from testing will be similar to the traffic and requests you typically see from ordinary site visits by a few users. It may peak at 100Mbps (0.1Gbps) when running brief, intensive scans. However, the overwhelming amount of testing relies on manual techniques that typically use an order of magnitude less.