The biggest threats I am concerned with are: * my liability and harm to my reputation resulting from unauthorized abuse of my systems * consumption of my limited Internet access bandwidth and capacity * corruption or loss of my systems and data * theft and sale or other abuse of my private data

The first results mostly from the risk of my systems being incorporated into bot nets.

The second from bot nets and abusive crawlers.

The latter results mostly from ransom ware or open ended theft and exploitation of my data.

The threats are not all from the Internet. I saw an article recently about ‘smart’ TVs that are configured to be part of a web scraping infrastructure that the vendors sell as a service, in some cases configured to use up to 200GB per month of bandwidth.