What websites are most vulnerable to DDoS attacks? In reality, anyone who hosts on the web are at risk of DDoS attacks. However in our experience we often see critical websites or applications being targeted as this holds more value to the owner. E-commerce, educational, financial, gambling, government and political websites are prone to attacks, due to the nature of the site. Cyber criminals who impose DDoS attacks are primarily trying to take down your services for a number of reasons. Depending on the size of the attack, the effects can vary from: slow network performance, denial of access to the website or application, increase spam emails received, or overwhelmed resources of the target server.