Prevent Fake Orders on WooCommerce

I need assistance with my WordPress website using WooCommerce to prevent fake orders. These orders are frequent and for £1, indicating a potential security issue. The task involves identifying the source of these fake orders and implementing measures to stop them. i would also like 1) an explanation about what is happening 2) what actions and steps will be taken to stop them now and in future Experience with WooCommerce and WordPress security is essential. Note: future maintenance for my site will be required so I'm looking for a long term working relationship and am willing to pay for future tasks