There are some cases in which the attackers are injecting malicious javascript to compromised websites to perform the attacks. In addition, the malware can be spread via pirated games and apps. They may infect the zombie device with malware, trojan horse, phishing, or other types of malicious software. Hackers use various methods to hijack users' devices. Millions of ordinary users around the world don't even suspect that they can be a part of mass-scale DDoS attacks. That collection of internet-connected devices is an extremely powerful weapon in the hands of cybercriminals.Ī botnet owner usually controls the zombies through a centralized server, also known as the command and control (C&C, or C2). A zombie is a computer/smartphone/IoT device that has been hijacked by an attacker. More sophisticated attacks can leverage a botnet of zombies or bots to attack the target.

They may use a VPN, layers of proxies, or spoofed IP addresses. To hide their ass, the attackers use a public WiFi network connection in coffee shops, universities, and other public places.

Hackers will exploit diverse techniques to attack their target. In the United States a DDoS attack could be classified as a federal criminal offense under the Computer Fraud and Abuse Act (CFAA). Well orchestrated attacks will result in overwhelmed bandwidth, CPU, and RAM capacity.ĭDoSing is an illegal cybercrime in many countries around the world. For example, Mirai’s attack peaked at an unprecedented 1Tbps and is estimated to have used about 145,000 devices within the assault.Īn important aspect is that the attack will happen at the same time because some servers have difficulty handling a large number of concurrent connections.

Using crontab to schedule the load testingĪn introduction to DDoS attack ( distributed denial-of-service attack) #Ī DDoS attack is a series of requests that are sent to the server at the same time from distributed sources.Ī 'perfect' DDoS attack will send numerous requests from hundreds to hundreds of thousands of different IP addresses.

Scheduling the load testing with at command.

Load testing as a DDoS attack simulation.

What is Load Testing and Load Generator?.

How innocent internet users are exploited for DDoS attacks.

An introduction to DDoS attack ( distributed denial-of-service attack).

Ddos test ip