Security, IT side, often is underestimate.
Due to this reason and, considering that whatsApp is very used chatting app I am taking note, on blog, about procedure, necessary, to enable two-step verification settings
https://faq.whatsapp.com/1920866721452534?helpref=faq_content
Meanwhile you can review review your linked devices in WhatsApp and unlink any device that you do not recognize.
