--- title: What is Malware and How Does it Work? description: Learn what malware is, how it works, and the common types that can harm systems, steal data, and disrupt business and personal devices. image: https://sibermate.com/hubfs/data-breach-laptop-exploding-cyber-attack-concept-1.jpg --- [Skip to Content](https://sibermate.com/en/hrmi/what-is-malware-and-how-does-it-work#body) [![SiberMate](https://sibermate.com/hs-fs/hubfs/White%20No%20BG@3x-2.png?width=225&height=72&name=White%20No%20BG@3x-2.png "SiberMate")](https://sibermate.com) Toggle Menu - Platform Toggle children for Platform - [SMLearn](https://sibermate.com/feature/smlearn) - [SMPhish](https://sibermate.com/feature/smphish) - [SMReport](https://sibermate.com/feature/smreport) - [SMBreach](https://sibermate.com/feature/smbreach) - [SMPolicy](https://sibermate.com/feature/smpolicy) - [SMHealth](https://sibermate.com/feature/smhealth) - [MCP](https://sibermate.com/feature/mcp) - Solution Toggle children for Solution - [Culture Program](https://sibermate.com/solution/culture-program) - [AI Agent Defense](https://sibermate.com/solution/ai-agent) - [ISO 27001](https://sibermate.com/solution/iso-27001) - [NIST CSF](https://sibermate.com/solution/nist-csf) - [CIS Controls](https://sibermate.com/solution/cis-controls) - [SOC 2](https://sibermate.com/solution/soc-2) - [JAMA/JAPIA](https://sibermate.com/solution/jama-japia) - [Act 854](https://sibermate.com/en-my/solution/act-854) - [PDPA](https://sibermate.com/en-my/solution/pdpa) - [Pricing](https://sibermate.com/pricing) - Resources Toggle children for Resources - [Case Study](https://sibermate.com/case-study) - [HRM Institute](https://sibermate.com/en/hrmi) - [White Paper](https://sibermate.com/whitepaper) - Free Tools Toggle children for Free Tools - [Maturity Assessment](https://sibermate.com/maturity-assessment) - [Exposure Check](https://xpose.sibermate.com/) - [About](https://sibermate.com/about) - - [English](https://sibermate.com/en/hrmi/what-is-malware-and-how-does-it-work) - [Indonesian](https://sibermate.com/id/hrmi/apa-itu-malware-dan-bagaimana-cara-kerjanya) - [Free Trial](https://sibermate.com/trial) [back to HRMI](https://sibermate.com/en/hrmi) [Cyber Threats](https://sibermate.com/en/hrmi/topic/cyber-threats) # What is Malware and How Does it Work? Read Time **2 mins** | 26 Jan 2026 | Written by: Mira Sibera [mailto:?subject=What%20is%20Malware%20and%20How%20Does%20it%20Work%3F&body=https%3A%2F%2Fsibermate.com%2Fen%2Fhrmi%2Fwhat-is-malware-and-how-does-it-work](mailto:?subject=What%20is%20Malware%20and%20How%20Does%20it%20Work%3F&body=https%3A%2F%2Fsibermate.com%2Fen%2Fhrmi%2Fwhat-is-malware-and-how-does-it-work) ![Malware](https://sibermate.com/hubfs/data-breach-laptop-exploding-cyber-attack-concept-1.jpg) Malware is a cyber threat that can damage your computer system and steal your personal data. ## Types of Malware You Should Know About Malware is malicious software designed to damage, disrupt, or exploit computer systems and networks. Some of the most common types of malware are viruses, worms, trojans, ransomware, spyware, adware, and rootkits. A virus is a type of malware that attaches itself to other files or programmes and spreads when those files or programmes are run. A worm is malware that can replicate itself and spread through a network without requiring user interaction. A Trojan is malware that disguises itself as legitimate software to trick users into installing it. Ransomware encrypts data and demands a ransom to restore access. Spyware monitors and collects users' personal information without their knowledge. Adware displays intrusive advertisements, while rootkits give attackers unrestricted access to infected systems. Read: [7 Effective Steps to Protect Company Data from Phishing and Malware](https://sibermate.com/en/hrmi/7-effective-steps-to-protect-company-data-from-phishing-and-malware) ## How Malware Spreads and Attacks Systems Malware can spread in various ways, including malicious email attachments, infected websites, unsafe software downloads, and external devices such as USB flash drives. Attackers often use social engineering techniques to trick users into clicking on malicious links or downloading infected files. Once inside the system, malware can perform various malicious actions such as stealing personal data, remotely controlling devices, corrupting or deleting files, and spying on user activities. Some malware is even designed to remain hidden so that it cannot be detected by security software. ## How to Detect Malware on Your System Detecting malware on your system requires vigilance and the use of appropriate security tools. Some signs that your system may be infected with malware include slow performance, unwanted pop-up advertisements, changes to settings that you did not make, and missing or corrupted files. Using regularly updated antivirus and antispyware software can help detect and remove malware. In addition, monitoring network activity for signs of suspicious traffic and checking system logs for unusual activity is also important. Read: [The New Cyber Threat: QR Code Malware Targeting Android Users](https://sibermate.com/en/hrmi/the-new-cyber-threat-qr-code-malware-targeting-android-users) ## Prevention and Protection Measures Against Malware Prevention is key to protecting your system from malware. Some preventive measures you can take include installing and updating security software, avoiding clicking on suspicious links or email attachments, and only downloading software from trusted sources. SiberMate can help companies change their employees' cyber security culture and prevent devices from being infected with malware. By providing comprehensive cyber security training and the right tools, companies can increase employee awareness and vigilance against cyber threats. In addition, implementing strict security policies and conducting regular security audits are also important for maintaining system integrity.   ## One-Stop Solution to Manage Employee Cybersecurity Simply & Automatically [Try Now](https://sibermate.com/trial) ![](https://sibermate.com/hubfs/de979d08-eba6-4d42-94e4-bfea6de1939f-1.png) [mailto:sales@sibermate.com](mailto:sales@sibermate.com) ##### Mira Sibera A writer who focuses on producing content related to Cybersecurity, Privacy, and Human Cyber Risk Management. Share [mailto:?subject=What%20is%20Malware%20and%20How%20Does%20it%20Work%3F&body=https%3A%2F%2Fsibermate.com%2Fen%2Fhrmi%2Fwhat-is-malware-and-how-does-it-work](mailto:?subject=What%20is%20Malware%20and%20How%20Does%20it%20Work%3F&body=https%3A%2F%2Fsibermate.com%2Fen%2Fhrmi%2Fwhat-is-malware-and-how-does-it-work) ## More Articles ![](https://sibermate.com/hs-fs/hubfs/blog-heroes/pdpa-compliance-malaysia-checklist-hero.webp?width=700&name=pdpa-compliance-malaysia-checklist-hero.webp) Jul 2, 2026 | PDP ### [PDPA Compliance Malaysia: A Practical 2026 Checklist](https://sibermate.com/en/hrmi/pdpa-compliance-malaysia-checklist) ![](https://sibermate.com/hs-fs/hubfs/system-background-compromised-by-hacking-3d-illustration-2.jpg?width=700&name=system-background-compromised-by-hacking-3d-illustration-2.jpg) Jun 21, 2026 | Cyber Threats ### [Ransomware as a Service: The Global Evolution of Cybercrime](https://sibermate.com/en/hrmi/ransomware-as-a-service-the-global-evolution-of-cybercrime) ![](https://sibermate.com/hs-fs/hubfs/data-breach-laptop-exploding-cyber-attack-concept-3.jpg?width=700&name=data-breach-laptop-exploding-cyber-attack-concept-3.jpg) Jun 20, 2026 | Data Breach ### [What Should a Company Do After a Data Breach?](https://sibermate.com/en/hrmi/what-should-a-company-do-after-a-data-breach) ###### Features - [Gap Analysis & Courses](https://sibermate.com/feature/smlearn) - [Auto-Phish](https://sibermate.com/feature/smphish) - [Analytics & Reporting](https://sibermate.com/feature/smreport) - [Breach Monitoring](https://sibermate.com/feature/smbreach) - [Policy Management](https://sibermate.com/feature/smpolicy) - [Risk Intelligence](https://sibermate.com/feature/smhealth) - [Connect MCP](https://sibermate.com/feature/mcp) ###### Solutions - [AI Agent Defense](https://sibermate.com/solution/ai-agent) - [Culture Program](https://sibermate.com/solution/culture-program) - [ISO 27001](https://sibermate.com/solution/iso-27001) - [NIST CSF](https://sibermate.com/solution/nist-csf) - [CIS Controls](https://sibermate.com/solution/cis-controls) - [SOC 2](https://sibermate.com/solution/soc-2) - [JAMA/JAPIA](https://sibermate.com/solution/jama-japia) - [Act 854](https://sibermate.com/en-my/solution/act-854) - [PDPA](https://sibermate.com/en-my/solution/pdpa) ###### Resources - [Case Study](https://sibermate.com/case-study) - [HRM Institute](https://sibermate.com/en/hrmi) - [White Paper](https://sibermate.com/whitepaper) ###### Free Tools - [Maturity Assessment](https://sibermate.com/maturity-assessment) - [Exposure Check](https://xpose.sibermate.com/) ###### Support - [Help Center](https://support.sibermate.com/) - [Developer Docs](https://docs.sibermate.com/) - [Contact Support](https://api.whatsapp.com/send/?phone=6281928000058&text=Halo%20Mira!%20I'm%20SiberMate%20client%20and%20I%20need%20support&type=phone_number&app_absent=0) ###### Company - [About](https://sibermate.com/about) - [Privacy Notice](https://sibermate.com/privacy-notice) [![SiberMate](https://sibermate.com/hs-fs/hubfs/White%20No%20BG@3x-2.png?width=225&height=72&name=White%20No%20BG@3x-2.png "SiberMate")](https://sibermate.com) A member of[![MSBU Group](https://sibermate.com/hs-fs/hubfs/W_Primary%20with%20no%20Slogan_No%20Bg_White2x.png?width=80&height=28&name=W_Primary%20with%20no%20Slogan_No%20Bg_White2x.png)](https://msbu.co.id) © 2026 SiberMate. 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