How to Tell If Your Computer Has Malware (And What to Do)
Malware is malicious software that can infect your computer, steal sensitive data, slow down your system, or even lock you out of your files. Recognizing the signs of malware early can help prevent serious damage to your personal or business information.
🚀 Brought to you by Axio Networks, an award-winning managed IT provider in Scottsdale, Arizona. We help businesses protect their systems with advanced cybersecurity solutions.
📌 Signs That Your Computer May Have Malware
🚨 If you notice any of these warning signs, your computer may be infected:
1. Slow Performance & Freezing
✔ Your computer takes longer than usual to boot up or open programs.
✔ Frequent freezing or crashing with no clear reason.
2. Frequent Pop-Ups & Unwanted Ads
✔ Random pop-ups appear, even when you’re not browsing the internet.
✔ Your browser keeps redirecting you to unknown websites.
3. Unusual System Behavior
✔ Programs open and close on their own.
✔ New icons or software appear that you don’t remember installing.
✔ Your mouse moves by itself or settings change unexpectedly.
4. High CPU or Disk Usage (Even When Idle)
✔ Your computer is running hotter or louder than usual (fans working overtime).
✔ Task Manager (Windows) or Activity Monitor (Mac) shows high CPU/Disk usage by unknown programs.
5. Internet or Network Issues
✔ Your internet connection slows down significantly with no known cause.
✔ Suspicious data usage spikes, even when you’re not actively using the internet.
6. Disabled Security Software
✔ Your antivirus is turned off, and you can’t enable it.
✔ You’re unable to access Windows Defender, Task Manager, or Control Panel.
7. Ransomware Messages
✔ A message appears demanding payment (ransom) to unlock files.
✔ You cannot access certain files, and their extensions have changed (.locked, .crypt, .enc).
✅ If you notice any of these signs, take action immediately to remove malware!
📌 What to Do If Your Computer Has Malware
Step 1: Disconnect from the Internet
✔ If you suspect malware, disconnect from Wi-Fi or unplug your Ethernet cable.
✔ This prevents the malware from spreading or sending data to hackers.
Step 2: Boot into Safe Mode
✔ Windows: Restart your computer and press Shift + Restart, then select Safe Mode with Networking.
✔ Mac: Restart and hold Shift until the Apple logo appears.
✅ Safe Mode prevents malware from running in the background!
Step 3: Run a Full System Scan with an Antivirus Program
✔ Use Microsoft Defender (Windows) or XProtect (Mac) for a basic scan.
✔ Install and run a deep scan with Malwarebytes, Norton, or Bitdefender.
✔ If malware is detected, follow the program’s removal instructions.
✅ Scanning in Safe Mode improves malware detection!
Step 4: Uninstall Suspicious Programs
✔ Open Control Panel > Programs > Uninstall a Program (Windows) or Applications (Mac).
✔ Look for unknown or recently installed programs and remove them.
✅ If you didn’t install it, don’t trust it—remove unknown software!
Step 5: Reset or Clean Your Web Browser
✔ Reset your browser settings to remove unwanted extensions.
✔ Clear cache and cookies in Chrome, Edge, Firefox, or Safari.
✅ Malware often hijacks web browsers—resetting can stop unwanted redirects!
Step 6: Update Your Software & Operating System
✔ Install the latest Windows or macOS updates.
✔ Update all installed applications and security software.
✅ Keeping your system updated protects against future infections!
Step 7: Restore from a Backup (If Necessary)
✔ If malware locked or deleted important files, restore from a secure backup.
✔ Use OneDrive, Google Drive, or an external backup drive.
✅ Regular backups prevent data loss in case of malware infections!
📌 How to Prevent Malware in the Future
1. Enable Multi-Factor Authentication (MFA) on Accounts
✔ Prevents unauthorized access, even if malware steals your password.
2. Use a Trusted Antivirus & Keep It Updated
✔ Microsoft Defender, Malwarebytes, or Bitdefender provide real-time protection.
3. Avoid Clicking Suspicious Links or Attachments
✔ Think before you click—phishing emails often spread malware.
4. Download Software Only from Trusted Sources
✔ Avoid third-party download sites—stick to official websites or app stores.
5. Regularly Backup Your Files
✔ Use cloud storage or an external hard drive to save critical data.
6. Keep Your Operating System & Software Updated
✔ Security patches fix vulnerabilities that hackers exploit.
✅ Good cybersecurity habits protect you from malware and cyber threats!
📌 When to Seek Professional Help
🔹 If malware keeps returning after removal attempts.
🔹 If your device is locked (ransomware) and files are inaccessible.
🔹 If banking or financial data may have been stolen.
🔹 If you’re in a business environment and a computer is infected—contact Axio Networks immediately.
✅ A cybersecurity professional can help fully remove malware and secure your system!
💡 Axio Networks Pro Tip
For business users, implementing managed endpoint security, automated patch management, and cybersecurity training helps prevent malware infections. Need expert IT security solutions? Axio Networks provides managed IT security and malware protection—contact us today! 🚀