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Total Defense
Premium Internet Security
Premium Internet Security provides simple, smart, and reliable protection from viruses, spyware, and malware on up to 5 of your smartphones, tablets, desktops, and laptops.
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Our other popular internet security software choices, to keep you and your devices safe.
Ultimate Internet Security

Protect everyone on every device in your home - Ultimate is an easy-to-use, all-in-one Internet Security suite that protects you, your family, and up to 10 of your devices from harmful viruses and the latest online threats.
Essential Anti-Virus

Anti-Virus security ensures you’re totally covered keeping your devices safe from malware, spyware, ransomware, and harmful viruses.
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Learn more about our highly rated malware protection or get started today with a free 30-day trial of Total Defense Internet Security, with no obligation to buy.
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AV Comparatives Advanced Plus

AV Comparatives Advanced Plus

VB100 Certified

AV Comparatives Advanced Plus

OPSWAT Certified

AV Comparatives Advanced Plus
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An exclusive automatic renewal service benefit.

When you choose Total Defense, you’re safeguarded with award-winning, multi-layered virus protection technology. Our powerful security lets you confidently shop, bank and browse online. In fact, we’re so certain we can protect you, if you’re running a Total Defense Security Product and a virus slips past our powerful protection, our expert technology advisors will remove the virus from your device for free. In the unlikely event the virus can’t be removed, we will give you your money back.
»Important terms and offer detailsWe’ve Got You Covered
Over 20 years of Dedication
We are committed to your cybersecurity, from installing the software effectively to helping recovery in the event of a breach.
Advanced Threat Protection
A good offense is the best defense! Real-time and on-demand malware scanning engines provide powerful proactive protection.
Award Winning Security
Powerful protection, securing all entry points, wherever you are, whatever type of device you’re using to access the internet.
Customer Commitment
Our US-based support team is focused on keeping you and your family safe in the ever changing connected world.
Why Total Defense Internet Security >Defend the Defenseless
Total Defense has been a proud supporter of the National Center for Missing & Exploited Children for over 15 years.
Total defense has supported NCMEC in it’s mission to help find missing children, reduce child sexual exploitation and prevent child victimization. We provide quarterly monitary support for NCMEC’s efforts to provide important programs that assist missing and exploited children nationwide.
To learn more about NCMEC, visit www.missingkids.org or see NCMEC on Twitter and Facebook.

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Total Defense
Internet Security and Safety Center
Helpful tips and articles with practical steps you can follow to improve your online safety

Total Defense Security Tip of the Day
06.14.25
Your secret weapon: why Bcc is your email's best friend
How often do you send an email to a group of people? Maybe it's a message to your kid's soccer team, an update to your book club, or an invitation to a family gathering. When you hit "compose," you might naturally drop everyone's email addresses into the "Cc" (Carbon Copy) field. But here's a crucial tip for keeping everyone's privacy intact and staying a step ahead of spammers: make "Bcc" your new best friend!
Think of "Cc" as shouting everyone's email address to the entire group. Every single person who receives that email can see everyone else's address. Now, imagine if one of those recipients accidentally replies-all to a huge list, or worse, their email account gets hacked and that entire list of addresses falls into the wrong hands. Suddenly, a simple group email has turned into a privacy nightmare, exposing everyone on that list to potential spam, phishing attacks, and unwanted messages.
The Problem with Overusing "Cc":
- Privacy Invasion: Not everyone wants their email address shared with a bunch of strangers, or even casual acquaintances. It's a breach of their privacy.
- Spam Risk: If an email list gets exposed (e.g., through a data breach of one recipient's account), all those visible email addresses become targets for spammers and cybercriminals.
- Reply-All Disasters: We've all seen those epic "reply-all" storms. When everyone's email is visible, it's easier for someone to accidentally (or intentionally) reply to the entire list, creating a chaotic and annoying email thread.
- Phishing Bait: Cybercriminals actively collect email addresses for their phishing campaigns. A publicly exposed list makes their job much easier.
Embrace the Power of "Bcc": Your Email Privacy Protector!
"Bcc" stands for Blind Carbon Copy. This magical field allows you to send an email to multiple recipients without any of them seeing who else received the message. Each recipient only sees their own email address in the "To" field (or your email address if you put yourself in the "To" field).
Here's why you should use "Bcc" whenever your recipients don't specifically need to see each other's email addresses:
- Ultimate Privacy: This is the biggest win! Everyone on the Bcc list gets the email, but their email addresses remain completely hidden from other recipients. Your contacts will definitely appreciate this thoughtfulness.
- Spam Prevention: By keeping email addresses private, you dramatically reduce the chances of your contacts' addresses being scooped up by spammers or being exposed in a breach originating from someone else's compromised inbox.
- Avoids Reply-All Chaos: If recipients can't see the full list, they can't accidentally (or intentionally) reply to everyone. This keeps your inbox cleaner and prevents those dreaded group email sagas.
- Professionalism: Using Bcc for large groups or non-interconnected recipients is a sign of good email etiquette and professionalism.
How to Use "Bcc" in Your Email Client:
Most email clients (Gmail, Outlook, Yahoo Mail, etc.) make it easy to use Bcc. When you're composing a new email:
- Look for the "To" and "Cc" fields.
- You'll usually see a "Bcc" option or button right next to them, or you might need to click a small link like "Bcc" to make the field appear.
- Click on the "Bcc" field and then add all the email addresses you want to include in your message.
Making "Bcc" your go-to for group emails is a simple habit that offers huge benefits for privacy and security. It protects your contacts from unnecessary exposure and helps keep their inboxes (and yours!) safer from spam and phishing. Start using Bcc today – your contacts will thank you!
5 smart steps to take if your personal data has been compromised
Questions? Our friendly award winning US-based support team is happy to help and it’s free.
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60 Day Money Back Guarantee

Money Back Guarantee Program
Total Defense is committed to helping you with your refund. If our product does not meet your expectations for any reason, we will provide a full refund within 60 days of your purchase.
Virus Protection Assurance Program

Virus Protection Assurance Program
An exclusive benefit for customers enrolled in the Automatic Renewal Service.
When you choose Total Defense, you’re safeguarded with award-winning, multi-layered virus protection technology. Our powerful security lets you confidently shop, bank and browse online. In fact, we’re so certain we can protect you, if you’re running a Total Defense Security Product and a virus slips past our powerful protection, our expert technology advisors will remove the virus from your device for free. In the unlikely event the virus can’t be removed, we will give you your money back.
»Important terms and offer detailsFree US-Based Support Team

Need Assistance?
US-Based Support • Weekdays 9am – 5pm, Eastern Time USA
Technical Support
Call 1-866-305-7989
or Email
Free technical support includes:
- Download and installation
- Activation and configuration
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- Updates and upgrades
Customer Care
Call 1-877-906-8816
or Email
Customer care assists with:
- Sales and orders
- Account information
- Renewals
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The VB100 Award

VB100 Certification
The VB100 award is a certification of products which meet the basic standards required to be recognized as legitimate and properly functioning anti-malware solutions.
To display a VB100 logo, a product must:- Prove it can detect 100% of malware samples listed as ‘In the Wild’ by the WildList Organization
- Generate no false positives when scanning an extensive test set of clean samples.
- All this must be done with default, out-of-the-box settings in the VB lab environment.