🔧 Free Diagnostic Tool

PC Security Checklist — Is Your Computer Properly Protected?

Purpose: This checklist identifies gaps in your computer's security across all key protection areas.

📋 This tool is based on common issues we diagnose in real repairs across Melbourne's northern suburbs. We've seen hundreds of these faults — the guidance reflects real-world outcomes, not theory.

Most home computer infections are preventable. The essentials: a reputable antivirus (Windows Defender is adequate), automatic updates enabled, hardware firewall (your router provides this), automatic cloud backup, and strong unique passwords with a password manager.

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PC security checklist — Your IT & Tech Mates

🔍 Interactive Tool

Answer the questions to get your result

No personal information is collected. All processing is local to your browser.

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Next steps

After You Get Your Result

✅ All clear

Even a positive result benefits from preventive maintenance. Check related guides below.

⚠️ Minor issues

Many minor faults have DIY fixes. Our guides walk you through each option clearly.

🔴 Repair needed

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📋 Real Example — Pc Security Checklist

A Reservoir resident's PC had been running with Windows Update disabled for 14 months. Three unpatched critical vulnerabilities. We enabled automatic updates, installed Malwarebytes, and removed two pieces of adware in a single visit.

Root Causes

What's Actually Causing This?

Understanding the cause helps you make better decisions — and helps us fix it faster.

Windows Update

Running outdated Windows exposes known security holes that attackers exploit within days of patches being released. Auto-update should always be on.

Antivirus Status

Windows Defender is adequate for most home users if kept current. Third-party tools add real-time phishing protection and email scanning.

Browser Security

Outdated browsers and unreviewed extensions are a major attack surface. Use a modern browser and audit extensions quarterly.

Backup Status

Without a tested backup, ransomware can permanently destroy years of data. The 3-2-1 rule: 3 copies, 2 media types, 1 offsite.

What To Do Next

What Your Result Means — Next Steps

Your result points to either an issue you can address yourself, or one that needs professional attention before it worsens.

✅ Minor Issue — Try This First

Enable Windows Update auto-install and restart regularly
Run Windows Defender and check it's up to date
Audit browser extensions — remove anything you don't recognise
Set up a free cloud backup (OneDrive/Google Drive) for critical files

⚠️ Serious Issue — Act Now

If antivirus has been disabled and you don't know why — book a malware check
Any unknown remote access software (TeamViewer, AnyDesk) you didn't install is an emergency
Ransomware can encrypt all files within minutes — a working backup is your only defence
Call 0452 323 571 immediately if you suspect an active infection

Key Questions

Is It Worth Fixing? Can It Get Worse? Hardware or Software?

⚙️Hardware vs software security: Most PC security gaps are software — outdated OS, expired antivirus, unreviewed browser extensions. Hardware security (BIOS password, TPM) matters more for mobile devices and shared machines.

⚠️What an unprotected PC risks: An unpatched Windows PC is typically compromised within 4 minutes of exposure to public internet without a firewall. Browser-based attacks don't even require opening a suspicious file.

✅What does securing a PC cost? Windows Defender is free and adequate. MFA on email costs nothing. The biggest security investment is time — 30 minutes of checks using this checklist addresses most home PC risks.

🚨 Urgency note: If you haven't updated Windows in over 30 days, run Windows Update right now — before finishing this tool.

Not sure what to do next? Call or WhatsApp us for a free triage — no obligation.

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💡 If you've found gaps in your security checklist, addressing them now is far simpler than recovering from a breach later.

Professional Help

Do You Need a Professional Repair?

✅ You can DIY if:

You can handle: enabling Windows Update, checking Windows Defender is active and updated, reviewing browser extensions for unfamiliar additions, and enabling the Windows Firewall. These are safe, effective, and free.

🔧 You need professional repair if:

You need professional help if: antivirus has been disabled and you didn't do it; you've noticed unknown software installed; your computer is sending emails you didn't write; or you've allowed a remote session from someone who called you.

⚠️ What happens if you ignore this: An unpatched Windows PC left on the internet accumulates attack surface with every passing week. Browser-based attacks don't require you to click anything suspicious — simply visiting a compromised website on an unpatched browser can result in infection.

🛠️ We perform PC security audits and malware removal across Melbourne's north — most completed the same visit. If your PC security score concerns you, contact us for a professional assessment.

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Common questions

PC Security Checklist — FAQs

Is Windows Defender good enough?

For most home users, yes. Windows Defender provides solid real-time protection when kept updated. Adding Malwarebytes as a secondary scanner provides extra coverage.

How often should I update Windows?

Install updates within 2 weeks of release. Critical security patches fix vulnerabilities being actively exploited.

What's the safest way to back up my data?

The 3-2-1 rule: 3 copies, 2 different storage types, 1 offsite (cloud). Windows Backup or Time Machine to an external drive, plus OneDrive or Google Drive.

Why is 2FA important?

2FA prevents account takeover even if your password is stolen. Enable it on email first, then banking and social media.

Need a Security Audit? We Can Help.

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