Scan Computer For Malware And Viruses Must Be Done
Updated on October 21, 2022, by Xcitium
How to Scan a Computer for Malware and Viruses
To scan a computer for malware and viruses, use trusted antivirus or endpoint protection software and perform a full system scan. A comprehensive scan checks files, folders, applications, system memory, startup programs, registry entries, browser extensions, and running processes to detect viruses, ransomware, spyware, trojans, worms, rootkits, and other malicious software. If threats are found, quarantine or remove them immediately and perform a second scan to confirm the system is clean.
Step-by-Step: Scan a Computer for Malware and Viruses
Follow these steps for a thorough security scan:
- Update your antivirus or endpoint protection software.
- Disconnect from untrusted networks if you suspect an active infection.
- Start a full system scan.
- Allow the scan to complete without interruption.
- Review the scan report carefully.
- Quarantine or remove detected threats.
- Restart the computer if prompted.
- Run a verification scan.
- Install operating system and software updates.
- Keep real-time protection enabled to reduce future risk.
Routine scanning, combined with continuous endpoint protection, provides the strongest defense against malware and viruses.
Understanding the difference between malware and viruses would help you protect your system properly against these threats. You need to have a strong and robust security solution and scan computer for malware and viruses to see if you are really from these threats and make sure that systems are running properly.
A virus is just a kind of malware, but this terminology is more popular to the public. While the term malware refers to any malicious software program which includes computer virus. If you were able to scan computer for malware and viruses, you will notice that this malware is a software that is specially designed to harm and infect the host computer.
In general, if you scan computers or scan computer for malware and viruses, malware includes viruses, Trojan horses, worms, spyware, and adware. There is also advanced malware like the ransomware which can commit financial fraud and extort money from the victim. Viruses, on the other hand, are a specific type of malware itself. It is a malicious piece of code that can infect other software or the whole system and replicates itself to spread the infection.
Malware vs Virus
| Malware | Virus |
|---|---|
| Broad category of malicious software | Specific type of malware |
| Includes ransomware, spyware, trojans, worms, adware, and rootkits | Replicates by attaching itself to legitimate files |
| May steal data, encrypt files, or enable remote access | Primarily spreads by infecting other files |
| Often uses phishing, downloads, or exploits for delivery | Typically requires execution of an infected file |
Understanding the distinction helps users recognize why modern security solutions detect far more than traditional computer viruses.
Scan Computer For Malware And Viruses Must Be Done: Common Signs
It is important to scan computer for malware and viruses and scan computers in the network to maintain your systems running properly. But sometimes it is hard to detect and you need to observe your system carefully. Here are some helpful signs to check if your systems could already been infected by the malware and viruses.
- If the user hasn’t performed the scan computer for malware and viruses or scan computers in the network, you will notice that the computer might experience a slower internet and processing. Although doesn’t always happen and blame to the virus, if this occurs in a sudden situation and previously, you are not experiencing this, then it is possible that the computer virus.
- If the user hasn’t performed the scan computer for malware and viruses or scan computers in the network, you will notice that the computer might behave very weird. Computer viruses are capable of doing strange things to a computer system. If the computer is not properly responding according to the commands of the user, then it is possible that the computer is infected with a virus.
- If the user hasn’t performed the scan computer for malware and viruses or scan computers in the network, you will notice that the computer might show sudden freeze and crash frequently. Since computer viruses can damage your hard drive, they can cause your computer to behave a great failure. If your computer was able to survive the crash, it would be better to run an updated antivirus.
- If the user hasn’t performed the scan computer for malware and viruses or scan computers in the network, you will notice that the computer might show error messages. If the computer is infected with a computer virus, it may show some annoying pop-up messages that warn about some missing file systems or application files.
- If the user hasn’t performed the scan computer for malware and viruses or scan computers in the network, you will notice that the computer might display advertisements. It is very common to see such advertisements when you are browsing the internet, but if you see these ads when you are not actively browsing, then this could be a sign of a virus infection.
- If the user hasn’t performed the scan computer for malware and viruses or scan computers in the network, you will notice that the computer might send malicious emails. One of the main sources viruses is through email because viruses can spread itself through email.
- If the user hasn’t performed the scan computer for malware and viruses or scan computers in the network, you will notice that the computer might delete or add files on your hard drive. You must keep track of the size of the hard drive because a virus may install multiple copies of itself or delete files unexpectedly.
Preventing Virus Infection
Most of us need to deal with viruses and malware, it is important to know how you can prevent being infected by these threats. Here are some helpful ways on how you will prevent viruses and malware from infecting your computer and keep your hardware secured.
Install antivirus or antimalware software on your system
This tip is very common yet many people are not doing this. The most basic way of protecting your computer system is to install a legitimate security solution and make sure to scan computer for malware and viruses or scan computers in the network.
Keep your antivirus or antimalware software updated
Installing the security software is the first step of your protection, but it doesn’t stop there. You need to fully update the software to have the latest virus definitions. Make sure that your computer is connected to the Internet. After this, you can now scan computer for malware and viruses or scan computers in the network.
Run regularly scheduled scan computer for malware and viruses
You need to scan computer for malware and viruses or scan computers in the network in a regular and scheduled manner. This way, you will not miss out any security issues just in case to forgot to run a system scan in the future. Make sure to schedule the scan after during the time that you are not using your computer, so that it will not disturb you during the scanning process.
Keep your operating system updated
After you scan computer for malware and viruses or scan computers in the network, your next step is to update the OS. Whether your computer is running on Windows, Linux, or Mac OS, you need to make sure that the system is up-to-date, so that any vulnerabilities will not be exploited by the cybercriminals. Patches are always released by the system developers, you just need to download the patch from the official site of the OS and not on the untrusted sites you can see in the internet.
Full Scan vs Quick Scan
Computer Scan Comparison
| Scan Type | Best For | Coverage |
|---|---|---|
| Full Scan | Suspected infections and routine deep inspections | Entire computer, including files, memory, registry, startup items, browser extensions, and applications |
| Quick Scan | Daily security checks | Common malware locations and active processes |
| Custom Scan | Downloads, USB drives, or selected folders | User-selected files and storage locations |
| Offline Scan | Rootkits, bootkits, and persistent malware | Runs before the operating system starts |
A full scan provides the most complete assessment of your computer’s security.
What Does a Full Malware and Virus Scan Check?
A comprehensive scan examines:
- Operating system files
- Installed software
- Running processes
- System memory
- Startup programs
- Windows Registry
- Temporary folders
- Download folders
- Browser extensions
- Email attachments
- USB drives
- External storage devices
- Scheduled tasks
Checking these areas improves the likelihood of detecting both active and dormant threats.
Signs You Should Scan Your Computer
Run a malware and virus scan if you notice:
- Slow computer performance
- Frequent crashes or freezing
- Unexpected pop-up advertisements
- Browser redirects
- Unknown applications
- Disabled antivirus software
- High CPU or memory usage
- Suspicious network activity
- Missing or encrypted files
- Unauthorized account activity
These symptoms may indicate a malware or virus infection.
Threats a Computer Scan Can Detect
Modern endpoint security solutions detect:
- Viruses
- Ransomware
- Trojans
- Worms
- Spyware
- Adware
- Rootkits
- Keyloggers
- Fileless malware
- Potentially Unwanted Programs (PUPs)
- Cryptojacking malware
Behavioral analysis, AI, and cloud threat intelligence improve detection of both known and emerging threats.
What to Do If Malware or a Virus Is Found
If threats are detected:
- Quarantine or remove the infected files.
- Disconnect the affected device if an active compromise is suspected.
- Restart the computer if required.
- Run another full system scan.
- Update the operating system and installed applications.
- Change passwords after confirming the system is clean.
- Restore affected files from trusted backups if necessary.
- Continue monitoring for suspicious activity.
Prompt remediation reduces the likelihood of additional damage.
Malware and Virus Prevention Checklist
Reduce future infections by:
- Keeping software updated
- Using trusted endpoint protection
- Enabling Multi-Factor Authentication (MFA)
- Avoiding suspicious email attachments and links
- Downloading software only from trusted sources
- Running scheduled full system scans
- Backing up important files regularly
- Applying Zero Trust security principles
- Monitoring endpoints continuously
Preventive security measures are more effective than recovering after an attack.
Malware and Virus Scan Workflow
Typical Detection Process
| Stage | Action |
|---|---|
| Threat Intelligence Update | Download the latest malware definitions |
| System Analysis | Scan files, memory, registry, and applications |
| Threat Detection | Identify malware, viruses, and suspicious behavior |
| Risk Assessment | Classify threats by severity |
| Quarantine | Isolate infected files |
| Threat Removal | Eliminate malicious software |
| Verification | Confirm the system is clean |
| Continuous Protection | Enable ongoing real-time monitoring |
Frequently Asked Questions About Scanning a Computer for Malware and Viruses
How do I scan my computer for malware and viruses?
Run a full system scan using trusted antivirus or endpoint protection software. Review the results, remove detected threats, and perform a second scan to verify that the system is clean.
What is the difference between malware and a virus?
A virus is a specific type of malware that spreads by infecting files. Malware is a broader term that includes viruses, ransomware, spyware, trojans, worms, adware, and rootkits.
How often should I perform a full scan?
Most users should run a full scan at least once a month. Businesses should combine scheduled scans with continuous endpoint monitoring and real-time protection.
Can a full scan detect ransomware?
Yes. Modern endpoint protection uses signatures, behavioral analysis, artificial intelligence, and cloud threat intelligence to detect ransomware before or during malicious activity.
Can I use my computer during a full scan?
Yes, although performance may temporarily decrease. Scheduling scans outside business hours can minimize disruption.
What should I do after removing malware or a virus?
Update your operating system, install security patches, change important passwords after verifying the system is clean, restore files from trusted backups if needed, and continue monitoring for unusual activity.
PROTECT YOUR ENDPOINTS FOR FREE
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