A cyber attack is an attack by a cybercriminal using one or more computers to target one or more computers or networks. A cyber attack can be used to disable systems on purpose, steal data, or launch more attacks from a computer that has been hacked. Cybercriminals use many different ways to attack online, such as malware, phishing, ransomware, and denial of service, among others. Get yourself secured from cyber attacks.
A cyber attack is any attempt to get unauthorised access to a computer, computer system, or computer network in order to do damage. Cyber attacks try to disable, disrupt, destroy, or take control of computer systems. They also try to change, block, erase, modify, or steal data that is stored on them.
Cyberattacks and their various kinds
1. 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 steal or secretly copy sensitive data, prohibit access to files, disrupt system functions, or render systems unusable.
2. Phishing is a social engineering technique used to induce receivers to open email messages. The recipients are tricked into downloading the virus contained within the email by opening an attached file or clicking on an embedded link.
3. Man-in-the-middle (MitM) assaults occur when an attacker places himself in the centre of two parties, such as a computer user and their bank. Depending on the nature of the attack, this type of attack can be classified as a man-in-the-browser attack, a monster-in-the-middle assault, or a machine-in-the-middle assault. It’s also known as an eavesdropping attack.
4. A DDoS assault is a sort of cyberattack in which hackers flood a company’s servers with huge amounts of data requests at the same time, rendering the servers unable to handle any legitimate requests.
5. SQL injection is when hackers insert malicious code into servers using the Structured Query Language computer language in order to cause the server to divulge sensitive data.
6. A zero-day exploit occurs when hackers exploit a newly identified vulnerability in IT infrastructure for the first time.
7. DNS tunnelling is a sophisticated operation in which attackers construct and then deploy permanently available access — or a tunnel — into their targets’ systems.
8. Credential-based attacks occur when hackers steal the credentials that IT professionals use to access and operate systems, then exploit that knowledge to gain unauthorised access to computers in order to steal sensitive data or disrupt operations.
Let’s look at some historic cyberattacks.
The Melissa Virus was an early and deadly cyberthreat. In 1999, David Lee Smith distributed the Melissa Virus as a Word file. Malware substantially damaged hundreds of companies, including Microsoft. Over $80 million is needed to fix the affected systems.
2. NASA hack
15-year-old James Jonathan took down NASA’s systems for 21 days in 1999. 1.7 million pieces of software were downloaded, costing $41,000 in fixes.
3. Estonia cyberattack
Estonia saw the first cyber attack on a full country in April 2007, when 58 government, financial, and media websites went offline.
4. PlayStation Network cyberattack
A cyberattack on Sony’s PlayStation Network in April 2011 compromised 77 million subscribers’ personal information.
5. Cyberattack on Adobe
The cyberattack that was previously thought to have affected 2.9 million users really compromised 38 million. Adobe maintains that just 2.9M passwords and credit card information were hacked, while the remaining 35.1M only lost passwords and ID.
6. Yahoo’s 2014 hack
When 500 million Yahoo accounts were hacked in 2014, it was a major cyberattack. Basic information and passwords were collected, but not bank information.
7. Attack on Ukraine’s Grid
In 2015, over half of Ivano-homes Frankivsk’s lost power in the first cyberattack on a power grid.
8. WannaCry Ransomware Attack
The 2017 ransomware assault affected approximately 200,000 computers in 150 countries. This outbreak cost businesses about 6 billion pounds.
9. A Marriott cyberattack went unreported for years
When Marriott bought Starwood Hotels, a cyber-attack had been brewing for years and wasn’t discovered until 2018. The attacker still had access to the guests’ personal information. 339 million guests’ information was compromised. UK data privacy regulators fined Marriott Hotels 18.4 million pounds.
Cyberattack Prevention Tips 2022
Patching operating systems and programmes is a key cyber security measure for combating ransomware. This helps eliminate hacker weaknesses. Here are some tips:
• Enable automatic system updates.
• Ensure your desktop web browser automatically updates security.
• Update browser plugins like Flash and Java.
2. Use a firewall and antivirus protection together
Anti-virus (AV) protection software has been the most common way to fight off harmful threats. Malware and other harmful viruses can’t get into your device and destroy your data if you have antivirus software. Use only one antivirus programme on your device, and make sure it comes from a reputable company.
It is important to use a firewall to protect your data from threats. A firewall protects your device by blocking hackers, malware, and other bad things that can happen over the Internet. It also decides which traffic is allowed to come in. Each version of Windows and Mac OS X has its own firewall, which is called “Windows Firewall” or “Mac Firewall,” respectively. Your router should have a firewall to keep threats out of your network.
3. Use strong passwords and software for managing passwords
Choose a password that has at least eight characters, one number, one capital letter, and one special character. Use passwords that are hard to figure out. Hacking can only be stopped by using strong passwords.
4. 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 usual way of identifying yourself online, which is with a password. Without two-factor authentication, you would usually enter a user name and a password. If you use two-factor authentication, you will have to provide an extra way to prove your identity, like a Personal Identification Code, an extra password, or even your fingerprint. In addition to your username and password, multi-factor authentication requires you to enter more than two other ways to prove who you are.