Mark Cowan Technical Support Services
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Feel confident. Keep it simple.

Everyday security, without the scare tactics.

You do not need a stack of security subscriptions to use your computer confidently. Start with updated devices, built-in protection, strong sign-ins, and knowing when to stop and ask for help.

Reviewed November 1, 2026 · Practical guidance for home users. Recommendations below are Mark’s approach; manufacturer links explain how the protections work.

More software does not automatically mean more safety. Keep one active, supported antivirus solution on Windows. Combine it with updates, backups, and careful decisions about links, downloads, and people asking for access.

Why does Apple have a reputation for safety?

Apple builds several layers of protection into its devices. That makes Apple a strong choice for many home users, but calling it “the safest” in every situation would go too far. Safety also depends on the device, its updates, the apps you install, and how you use it.

iPhone & iPad

Apps run in separate areas called sandboxes. These limit what an app can reach in other apps and in the operating system. Permission requests also help you control access to things like photos and the microphone.

This is a more restricted environment than a typical desktop computer. An iPhone “security” app cannot scan all other apps and system files the way a Windows antivirus can.

Apple: how app isolation works ↗

Mac computers

Gatekeeper checks downloaded software before it runs. Notarization checks participating apps for known malicious software, and XProtect helps detect and remove known malware. These protections work together in the background.

A Mac allows broader software installation than an iPhone. Be cautious about installers and requests to override security warnings.

Apple: built-in Mac malware protection ↗

Apple is not scam-proof. A fake bank message, stolen password, or convincing caller can still cause harm. Keep your Apple devices updated, protect your Apple Account with two-factor authentication, and keep a backup.

For most home users, Windows already has what you need.

Mark’s default recommendation: On a supported, updated Windows PC, Microsoft Defender Antivirus with Windows Security is generally sufficient for ordinary home use—email, browsing, shopping, and documents—when combined with sensible habits and backups. Buying an extra antivirus subscription is usually unnecessary just to get basic malware protection.

What do the names mean?

Windows Security is the built-in dashboard. Microsoft Defender Antivirus is its antivirus engine, formerly called Windows Defender. They are parts of the same protection system, rather than two products you need to buy.

The separate Microsoft Defender app offered with some Microsoft 365 plans is not required to use Windows’ built-in antivirus.

What is included?

  • Real-time malware scanning and updated threat information.
  • Windows Firewall to manage network connections.
  • App and browser controls, including SmartScreen checks for risky downloads and sites where supported.

Features vary by Windows version, browser, and settings.

Microsoft: Windows Security overview ↗
How do I check that I am protected?
  1. Open Start and type Windows Security.
  2. Open Virus & threat protection. Check the active provider and any recommended actions.
  3. With Defender as your provider, keep real-time, cloud-delivered, and tamper protection enabled. Check protection updates and run a quick scan if concerned.
  4. Keep Windows and your browser updated. Leave the firewall on.

If another antivirus is active, Defender may correctly be turned off. Do not try to force two real-time antivirus engines to run together.

Microsoft: protection settings and scans ↗

When more may be appropriate: A business with managed devices, compliance duties, or special risks may need centrally managed security and professional advice. Persistent suspicious activity needs investigation, even if a scan says everything is clear. Antivirus cannot repair an unsupported operating system or replace a backup.

Why Mark usually skips extra antivirus and “PC cleaners”

Norton, McAfee & other paid suites

These are legitimate security products and can detect threats. Mark’s recommendation is about whether you need the additional package.

For a typical home user, overlapping protection, another renewal bill, extra background services, notifications, and bundled features may add more complexity than value. Performance and prompts vary by product and settings.

If you specifically use a package’s parental controls, support, or other extras, compare those benefits and renewal terms before deciding. A subscription alone is not evidence that your device is safer.

CCleaner & similar cleanup tools

CCleaner is a cleanup utility, not a replacement for antivirus. Mark generally does not recommend routine registry cleaning or one-click “fix everything” tools for home users.

Changing registry entries can break apps or Windows. Removing temporary files may free space, but it is not a cure for malware, a failing drive, or insufficient memory.

Start with Settings → System → Storage and Windows’ cleanup recommendations. Review what will be deleted, especially Downloads and the Recycle Bin.

Microsoft: risks of registry changes ↗  ·  Microsoft: built-in storage cleanup ↗
Already have a paid antivirus? Ask Mark to review it before changing anything. After removal and a restart, verify that Defender is active and updated. Uninstalling an app may not cancel its paid subscription or automatic renewal.

What is a VPN—and do you need one?

A Virtual Private Network creates an encrypted connection between your device and a VPN server. Covered internet traffic travels through that server, so websites usually see its internet address instead of yours. Traffic outside the VPN’s coverage is not protected by its tunnel.

A VPN shifts trust: the VPN provider can see connection information that your internet or Wi-Fi provider would otherwise see. HTTPS still protects the contents of encrypted website connections; a VPN provider does not automatically get to read all your passwords or messages.

FTC: VPN privacy and trust ↗

A VPN may make sense if…

  • Your employer requires its VPN to access work systems.
  • You need secure access to your own home or office network while away.
  • You want less browsing information visible to a local network or internet provider, and trust the VPN provider instead.

On public Wi-Fi, a trusted VPN can add privacy. Modern HTTPS already encrypts most web activity, so public Wi-Fi does not automatically mean everyone needs a paid VPN.

What it will not do

  • Make you completely anonymous: signed-in accounts, cookies, and other tracking can still identify you.
  • Stop you from giving a password to a fake site or money to a scammer.
  • Replace antivirus, software updates, or backups.

Mark’s approach: For ordinary use on your own trusted home network, a consumer VPN is optional—not a basic requirement.

EFF: deciding whether a VPN fits your needs ↗
Downsides: slower internet, blocked sites, and printer problems
  • Speed: Extra routing can reduce speeds and add delay, depending on the server and connection.
  • Access: Banks, shopping sites, and streaming services may block VPN traffic or ask for extra checks.
  • Local devices: Some VPN settings interfere with Wi-Fi printers, casting to a TV, or access to shared files.
  • Reliability: A VPN’s “kill switch” may stop internet access when the VPN disconnects.
  • Cost and privacy: There may be subscription renewals. Review ownership, logging practices, and permissions; “free” does not guarantee private.

If something stops working when the VPN is on, ask Mark to check the app’s connection and local-network settings. Keep an employer-required VPN configured according to your employer’s instructions.

Example: VPN and Wi-Fi printer issues ↗  ·  Example: services that block VPN connections ↗

The habits that make the biggest difference

  • Keep the operating system, browser, and apps updated.
  • Use a unique password or passkey for each account, and enable two-factor authentication where available.
  • Back up important files and check that you can recover them.
  • Download apps from trusted sources. Question requests for new permissions.
  • Never share a verification code with an unexpected caller, or grant remote access because of a warning on a webpage.
A loud “your computer is infected” webpage is not a diagnosis. Do not call the number in it, pay, or install its suggested tool. Close the page. If it will not close, stop and call Mark using the number you already know. A familiar Norton, McAfee, Microsoft, or Apple logo can be copied into a fake warning.

If you already shared account details, contact the affected service through its official app or a known number. If money or banking details are involved, contact your bank promptly. Ask for help reviewing remote-access software and account security.

FTC: spotting tech-support scams ↗

Not sure what is installed on your computer?

Mark can help check your protection, review confusing warnings or renewals, and decide whether a VPN serves a useful purpose for you.

Call (951) 255-9814  ·  Text Mark about security