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Cybersecurity is no longer something only large companies need to worry about.Personal computers contain passwords, photographs, financial information, work documents and access to online accounts. A compromised PC can therefore become a serious problem. Here are ten security checks every Windows user should perform in 2026.
1. Install the Latest Windows Updates
The first step is simple: keep Windows updated. Microsoft regularly releases security updates to address vulnerabilities and improve system reliability. The August 2026 security updates are a good reminder that delaying updates indefinitely is not a good security strategy.
2. Check Microsoft Defender
Open Windows Security and verify that your antivirus protection is active. Make sure real-time protection is enabled and investigate any warnings shown by Windows Security.
3. Use Strong, unique Passwords
Never reuse the same password across multiple important accounts. If one service is compromised, reused passwords can allow attackers to access other accounts. A password manager can make unique passwords considerably easier to manage.
4. Enable Multi-Factor Authentication
Whenever possible, enable multi-factor authentication. Even if someone obtains your password, an additional authentication factor can make unauthorized access significantly more difficult. Prioritize email, banking, cloud storage and social media accounts.
5. Remove Software you don’t use
- Old applications can become security risks if they are no longer maintained.
- Open Settings → Apps → Installed apps and remove software you no longer need.
- Pay particular attention to applications you do not recognize.
6. Review Browser extensions
Browser extensions can have access to significant amounts of information. Remove extensions you no longer use and avoid installing extensions from unknown developers.
7. Check your downloads Folder
The Downloads folder is often forgotten. Remove old installers and files you no longer need, particularly files received from unknown sources. If a file looks suspicious, do not open it simply to see what it contains.
8. Review Account Permissions
Check which applications and services have access to your Microsoft account, Google account and other important online accounts. Remove access for services you no longer use.
9. Back Up important Data
A backup can protect you from hardware failure, accidental deletion and ransomware. Important files should not exist in only one location. For particularly valuable data, maintaining more than one backup is recommended.
10. Be careful with AI-Generated Content
AI has made it easier to create convincing emails, messages, images and websites. That means users need to be increasingly careful when clicking links or responding to unexpected requests. Do not assume that a message is legitimate simply because it looks professionally written.
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