Common Computer Security Threats and How to Avoid Them
Attackers employ various vulnerabilities to gain entry and exfiltrate data. Examples include SQL injection attacks where attackers inject SQL statements directly into web applications to expose or alter data, and command injection attacks on operating systems with unsanitized information.
Attackers use insecure network communication to compromise build processes, software update mechanisms and source code. Other techniques like replay attacks eavesdrop on communications or falsify IP addresses in order to introduce malware into networks.
Viruses
Viruses are malicious pieces of code that spread via emails, instant messages and pop-up ads as well as downloads, typically via hyperlinks to websites that download software updates. Once infiltrated, viruses collect sensitive information without detection or cause device damage by silently gathering data or encrypting files for ransom.
Cyber attacks are carried out by various individuals, from terrorist groups and hostile nation states, hackers and insiders (people who possess legal access but abuse it for illicit gain), to terrorists. All aim to steal data and damage or disrupt computing systems.
Attacks range from phishing, spam, spyware and malware attacks to social engineering tactics like man in the middle attacks and denial of service attacks to gain access to sensitive data. Others utilize techniques like SQL injection, LDAP spoofing and URL spoofing; others still may utilize Wi-Fi eavesdropping by creating fake public Wi-Fi networks in order to intercept data transmissions.
Spyware
Spyware is computer software that secretly monitors system activity without the user’s knowledge, often used by cyber criminals for identity theft, corporate espionage or to launch cyber attacks against companies and institutions. Other forms of spyware may reset browser homepages or display pop-up advertisements without user knowledge; slow device performance by eating CPU capacity and disk space or cause instability issues that debilitate device stability issues.
Some forms of spyware are installed through security vulnerabilities, while other varieties hide in application bundles or free software downloads. Bundleware allows users to unwittingly install malware applications they assume are legitimate; some is even concealed within “helper apps” like hard disk cleaners and download managers.
Advanced Persistent Threats (APTs), also known as Advanced Persistent Attacks (API), utilize long-term engagement with networks by employing sophisticated evasion techniques to remain undetected for years to gain access and steal crucial information before initiating further attacks.
Malware
Malware is an invasive software program designed to damage computer systems. It can spread via downloads, email attachments, instant messaging applications or malicious websites and includes viruses, worms, Trojan horses rootkits spyware adware.
Ransomware, an increasingly prevalent and destructive computer security threat, encrypts files on devices and demands payment in Bitcoin to unlock them. Ransomware represents one of the greatest dangers posed by malicious software today.
Other types of malware include scareware, which uses pop-up advertisements to convince users to purchase antivirus software that doesn’t protect against actual infections, and adware which tracks browsing activity to display targeted advertisements. Hackers continue developing techniques to bypass security software; users should therefore update their antimalware programs regularly.
Ransomware
Wherever it may be used in your office or home network, each remote endpoint provides criminals with an entryway into your network and could contain sensitive or proprietary data – like passwords and private security codes to your online accounts.
Ransomware is a type of malware that locks your data until a fee is paid in order to regain access. With the emergence of IoT devices that lack robust security features, ransomware attacks have become more prevalent.
Malware includes viruses, worms and spyware attacks. While viruses infiltrate files while worms exploit system vulnerabilities to spread themselves across networks. Furthermore, spyware attacks monitor sign-ins, searches and browsing history in order to steal personal information on computers connected to the Internet.
Identity Theft
Due to our world’s overreliance on internet connectivity, cyber attacks that put private information at risk have increased drastically in recent years. Connected devices — or Internet of Things (IoT) devices – have become particularly vulnerable due to ransomware attacks or any malicious code that encrypts systems before demanding payments to return them to normal operation.
Attackers utilize social engineering techniques to gather sensitive data that they use for extortion, data breaches or more sophisticated attacks like distributed denial of service. Businesses should encrypt their data and implement rigorous user authentication protocols to avoid this threat. Other threats include XML External Entities (XXE) injection, SQL injection and cross-site scripting attacks that should be prevented through robust database query methods and secure software update processes. To reduce these attacks further businesses must encrypt all their user input while using robust database query methods and secure software update processes – something businesses must do to reduce vulnerabilities associated with social engineering attacks that exploit human vulnerabilities in real time.