A “cyber attack” is when one or more computers are used to target several computers or networks. A compromised computer can be used to conduct more assaults, disable systems, or steal data. Malware, phishing, ransomware and denial-of-service attacks are just some of the tactics hackers use to launch attacks.
A cyber attack is defined as any attempt to gain unauthorised access to a computer, computing system, or computer network in order to cause harm. In order to alter, block, delete, alter data, or gain control of computer systems, cyberattacks use a variety of methods including denial-of-service attacks and denial-of-access (DoS) attacks.
Types of cyber attacks
- Malware is a term used to describe malicious software that is used to attack computer systems. Ransomware, spyware, and Trojans are examples of malware. Depending on the type of malicious code used, hackers can use malware to steal or secretly copy sensitive data, prevent access to files, disrupt system operations, or render systems unusable.
- Phishing is a method of persuading recipients to open emails by social engineering them. The recipients are tricked into downloading the virus contained within the email by opening an attached file or clicking on an embedded link.
- Man-in-the-middle (MitM) attacks occur when attackers position themselves between two parties, such as individual computer users and their banking institution. Depending on the specifics of the attack, this type of attack can be classified as a man-in-the-browser attack, a monster-in-the-middle attack, or a machine-in-the-middle attack. Another term for it is an eavesdropping attack.
- A denial-of-service (DDoS) attack is a type of cyberattack in which hackers flood a company’s servers with massive numbers of simultaneous data requests, rendering the servers unable to handle any legitimate requests.
- SQL injection occurs when hackers inject malicious code into servers using the Structured Query Language programming language in order to force the server to expose sensitive data.
- A zero-day exploit occurs when hackers exploit a newly discovered vulnerability in IT infrastructure for the first time.
- DNS tunnelling is a sophisticated attack in which attackers establish and then use persistently available access — or a tunnel — into their targets’ systems.
- Credential-based attacks occur when hackers steal the credentials used by IT professionals to access and administer systems and then use that information to gain unauthorised access to computers in order to steal critical data or disrupt an organization’s operations.
Cyber-attacks in the Past
Take a look at some of history’s most major cyberattacks
1. Melissa Virus
One of the first and most severe cyber threats was the Melissa Virus. The Melissa Virus was created in 1999 by programmer David Lee Smith, who sent a file that could be opened by Microsoft Word to consumers. Hundreds of companies, including Microsoft, have been severely impacted as a result of the spyware. Repairing the damaged systems is expected to cost more than $80 million.
2. A cyber-attack against NASA
In 1999, at the age of 15, James Jonathan was able to hack NASA’s computers and shut them down for 21 days! Approximately 1.7 million pieces of software were downloaded during the attack, costing the space giant $41,000 in fixes.
3. The Estonian Cyber Attack of 2007
Around 58 Estonian websites, including government, banking, and media services, went offline in April 2007, in what is claimed to be the first cyber attack on a full country.
4. Sony’s PlayStation Network has been hacked
A cyberattack on Sony’s PlayStation Network in April 2011 compromised the personal information of 77 million users.
5. Cyberattack on Adobe
The cyber attack that was thought to have compromised the data of 2.9 million users turned out to have compromised the personal data of up to 38 million people! According to Adobe, only the first 2.9 million people’s passwords and credit card information were hacked, while the following 35.1 million only lost their passwords and ID. If you are in USA then contact Support305.
6. Yahoo’s Cyber Attack in 2014
In 2014, one of the largest cyber assaults of the year occurred when 500 million Yahoo accounts were compromised. Basic information and passwords, however, were purportedly retrieved, but not bank information.
7. Attack on Ukraine’s Power Grid
In 2015, over half of the residents in Ukraine’s Ivano-Frankivsk district lost power for a few hours in what was the first cyberattack on a power grid.
8. WannaCry Ransomware Cyber Attack in 2017
One of the largest ransomware attacks in history took place in 2017, hitting over 200,000 computers in over 150 countries. This pandemic wreaked havoc on a variety of enterprises and cost the world nearly £6 billion!
9. For years, a cyber attack on Marriott Hotels remained unnoticed
A cyber attack had been lurking in the shadows for quite some time when Marriott purchased the Starwood Hotels company, and it wasn’t discovered until 2018. By that time, though, the attacker had continued to have access to the guests’ personal information. The personal information of an estimated 339 million visitors has been made public. As a result, the Marriott Hotels were fined 18.4 million pounds by the UK’s data privacy regulators.
Precautions Against Cyber-Attacks
2022’s Top Cyber-Attack Prevention Tips
- Ensure that your software is up to date
One of the most important cyber security measures for combating ransomware is patching obsolete software, both operating systems and applications. This helps to eliminate critical security flaws that hackers use to get access to your devices. Here are some helpful hints to get you started:
- Enable automatic system updates on your device.
- Ensure that your desktop web browser automatically gets and instals security updates.
- Keep your web browser’s plugins up to date, such as Flash and Java.
- Use a firewall and anti-virus software
Anti-virus (AV) protection software has been the most common way to stop attacks from bad people. Antivirus software stops malware and other dangerous viruses from getting into your device and messing up your data. Use only one antivirus tool on your device, and make sure it comes from a reputable company.
Using a firewall is a must if you want to keep your data safe from attacks from the outside. A firewall protects your device by blocking hackers, malware, and other bad things that can happen on the Internet. It also decides what traffic is allowed to come in. Both Windows and Mac OS X have their own firewalls, which are called Windows Firewall and Mac Firewall, respectively. A firewall should be built into your router to protect your network from threats.
- Use strong passwords and a tool for managing passwords
Choose a password that has at least 8 characters, one number, one uppercase letter, and one special character. Don’t use passwords that are easy to guess. Strong passwords are the most important thing you can do to keep hackers away.
- Use two-factor authentication or more than two factors
Two-factor authentication, also called multi-factor authentication, is a service that adds more security to the traditional way of proving your identity online, which is with a password. Without two-factor authentication, you would usually put in a username and a password. But if you use two-factor authentication, you will be asked for something extra, like a Personal Identification Code, another password, or even your fingerprint. With multi-factor authentication, you’ll need to put in more than two ways to prove your identity after entering your username and password.