DDoS short for Distributed Denial of Service attack is a type of attack on websites performed using bots. In a DDoS attack, hackers use bots to generate fake traffic so they can exhaust your server resources and crash your website.
These attacks are made by hackers for extortion (demand money) or to fulfill other unethical needs from the website owner. While DDoS attacks doesn’t automatically compromise the security of your website, they can most certainly bring your website down and make sure that none of your users can access your site.
The period of a DDoS attack can vary from a day to a week, or more. It can destroy the online presence of a website or application during this time. If you are a website owner, and you are facing DDoS attacks, then you need to apply a strong firewall on a DNS level to mitigate it.