Every shared information on the internet are being saved in server.Its important to keep servers alive to access those information.Some information are public while some are private.Hackers always to try to get private information to do their malicious activities

But,Hacking is not just about stealing the information.When hackers do not success in stealing,they will try to down the whole server.In this case,we may lose all the information that are saved in the server if we don’t have backup.

Now a days,attacks on gaming server,new websites,bank websites,shopping sites is a common thing.These attacks are generally done by DDoS .So internet users must be aware of DDoS.

Distributed denial of service(DDoS) :

DDoS attack refers to make online service unavailable through overwhelming it with traffic from numerous sources.DDoS attack targets wide range of resources including websites,banks,shopping sites,news and many more.They create a challenge to people’s attempts to access information Years ago DDoS was just a basic attack to overwhelm connection with traffic with the aim of taking a certain web property offline.When leading web experts began fighting DDoS attack in the year 2000, the flood attacks ranged at 400 Mbps but as we speak they exceed 100 Gbps.

The attackers build a network of infected computers called BOTNET and spread the malicious software through websites,emails and through social media.The machines are capable of being controlled remotely once infected.The floods are generated in numerous ways including sending more connection requests that exceeds what server can handle.They can also be generated by having the computers send to the victim huge volume of random data with the intention of using up the target’s bandwidth. Some DDOS attacks are so huge that they can max out the whole country’s international cable capacity.

Today DDoS invloves series of attacks targeting multiple devices that consist of the organization’s security infrastructure as opposed to targeting connection bandwidth only. They include various applications and firewall or IPS devices that organizations rely on such as DNS, SMTP, VOIP, HTTPS and HTTP.The latest version of DDOS attack is the common multi-vector attack that combines flood, state exhaustion and application attacks against the infrastructure devices in a sustained single attack.

The best defensive mechanism against the modern DDOS attack is the layered approach combining cloud based protection and on-premise. With this type of protection, you are guaranteed of 100% security for your organization against the entire spectrum of DDOS attacks. A digital attack map is also ideal for protection against a DDOS attack because it displays global DDOS activities on any particular day. It displays the attacks as dotted lines that are scaled to size and stored in line with their source and the destination countries of attack traffic when they are known

Specialized online marketers exist who buy and sell DDoS attack and botnet.A week-long DDoS attack for instance that is capable of bringing a small firm offline could cost as little as $200.