DDoS Attacks 101 from alphabanklogs.com
DDoS Attacks 101
Distributed Denial of Service (DDoS) attacks
is one of the oldest attack methods in existence. They can cripple a company’s network and/or website servers long enough to set it back considerably, or even cause it to cease operations for the period of the attack and some time afterwards. For a multitude of industry verticals — be it e-commerce, banking or healthcare — a well-executed DDoS attack can become the cause of financial loss, reputation damage and business shutdown.
But how much do you really understand DDoS attacks? Knowing they’re a type of cyberattack or about their potential to cause damage is half the battle, so keep reading to find out how they work, who’s at risk and what can be done to detect and mitigate them.
What Is a DDoS Attack?
DDoS attacks are malicious attempts to distort the normal traffic patterns of a service, network or server by overburdening the target with a flood of Web traffic. A DDoS attack increases in effectiveness by leveraging multiple compromised servers — collectively labelled as a botnet — as sources of malicious traffic. Attack devices can include PCs and other Internet-capable resources such as Internet-of-Things devices.
DDoS attacks can occur to businesses of all sizes at any time and place, and in 2018, the number of attacks experienced by companies around the world skyrocketed. Recent examples of a successful DDoS attack include a high-profile one on GitHub. The coding repository went offline because of an attack that scaled to 1.3Tbps.
What Happens During a DDoS Attack?
DDoS requires adversaries to gain access to a group of machines in order to launch an attack. PCs and other machines (like smartphones) are infected with malicious software, with the attack turning each one into a zombie device or bot. The adversary then gains remote control over the bots, creating a group which is known as a botnet. Once a botnet is created, the attacker is able to instruct the individual bots by sending updated directions to each machine through the remote-control method.
When a botnet targets the network or service of a victim, each bot reacts by sending multiple requests to the victim, potentially causing the target’s machine to overflow capacity, leading to a denial of service to usual traffic. Because every bot is a legitimate machine, filtering the malicious flow from normal traffic can be difficult.
What Are the Different Types of DDoS Attacks?
The base of a DDoS attack can significantly vary, but most attacks will be generally classified into one of the following three categories.
Volume-Based DDoS attacks
Protocol-Based DDoS attacks
Application Layer DDoS attacks
What Are Some Common DDoS Attack Tools?
HULK (HTTP Unbearable Load King)
LOIC (Low Orbit Ion Cannon)
HOIC (High Orbit Ion Cannon)
What Can Be Done to Detect a DDoS Attack? – DDoS Attacks 101
pings from various sources.
It’s also worth keeping a close eye on any email accounts hosted on a company’s server and the comments area
What’s the Best Way to Protect a Company From DDoS Attacks?
Unfortunately, not much can be done to stop a network, server or website DDoS attack once it targets a victim. However, there are steps businesses can take to mitigate and even prevent Distributed-Denial-of-Service attacks.
- Bandwidth monitoring: This mitigation method involves the implementation of a tool that identifies unusual spikes in Internet traffic. High-growth organizations may surpass their bandwidth limits a few times per week, but for most companies, system overload is an indication of an attack
- WAF (Web Application Firewall): WAF is ideal for mitigating Layer 7 attacks. By placing a Web application firewall between a server and the internet, it may function as a “reverse proxy” to protect the targeted server from different types of malicious requests. By using a series of rules to filter the requests, WAF can prevent or reduce the effectiveness of Layer 7 DDoS
- Black Hole routing: Another great solution for mitigating a DDoS attack program is black hole routing. It requires admins to set up a black hole route and direct traffic towards it. Both malicious and legitimate traffic is routed to a black hole or null route and then removed from the network. When a server is experiencing a DDoS attack, the security person may send all its incoming and outgoing traffic into a black hole as a line of defense
Alternatively, firms can look into a DDoS mitigation service to protect against attacks. This may increase costs by few hundred dollars a month, but if they wait too long or until an intrusion