Cyber security aims at protecting the networks, software, devices, and data from cyber-attacks. Cyber security assists in avoiding the disruption or misdirection of its services. The term Cyber security applies in various contexts, from business to mobile computing. Global cyberattacks are evolved continuously. To avoid such attacks, various security schemes have been developed in different categories. The security schemes can be divided into a few common categories.
• Network security: It protects the computer networks from intruders, such as insider attackers and malware.
• Application security: It assists in ensuring the security of software applications and devices against threats. A compromised application could provide access to the users’ private data and break cyber security.
• Information security: It ensures data integrity and data privacy during both storage and transmission.
• Operational security: It provides security to the processes and decisions during the handling of data assets.
• Disaster recovery and business continuity: It represents the response of an organization when the cyber-security incident or any other actions related to security causes the loss of operations or data.
• End-user education: It represents the factor of most unpredictable cyber-security. This step teaches the users to delete suspicious email attachments, unidentified USB drive plug-ins, and so on.
Some of the cyber security-threatening attacks are listed as follows.
Malware: It denotes malicious software, one of the most common cyber threats. Hackers or cybercriminal designs the malware software to disrupt or damage a legitimate user’s interaction. There are different types of malware, and they are listed as follows.
• Virus: it represents a self-replicating program, and it attaches a malware file and spreads throughout a computer system.
• Trojans: Cybercriminals enforces users to upload Trojans onto their computer, and it causes damage or helps in collecting their data.
• Spyware: it is a software program that secretly records user activities, and the cybercriminals make use of such theft data. For example, spyware is widely used to capture credit card details.
• Ransomware: It is a recent malware type, and it locks down a user’s files and data. Cybercriminals threaten the users to erase the locked files unless a ransom is paid.
• Adware: Advertising software is responsible for spreading malware.
SQL injection: A Structured Query Language (SQL) injection is a type of cyber-attack, and it attempts to steal data from a database.
Phishing: Phishing attacks target victims with emails. However, it appeared to be from a legitimate email id. Through phishing attacks, cyber criminals request sensitive information.
Man-in-the-middle attack: A Man-in-the-Middle (MiM) attack is one of the cyber threats. This kind of attack intercepts the communication between two individuals to trace data and secret information like passwords.
Denial-of-service attack: A Denial-of-Service (DoS) attack overwhelms the network by flooding the traffic towards the target and making it unavailable to legitimate users.
To avoid Cyber attacks and protect end-user communication, Cyber security is crucial. Most Cyber security schemes rely on Cryptographic algorithms. They help in protecting the information during transmission as well as avoiding data loss or theft. Some of them use intrusion detection schemes to provide Cyber security. It is essential to evolve the security schemes continuously against new threats.