Finally, a security solution for the rest of us...

At iolo, we believe computers are meant to speed things up, not slow things down. That's why we engineered the new System Shield 4 technologies to provide outstanding antivirus and antispyware protection for performance-minded users. It works quietly and efficiently, without slowing your PC down like other security products, so now you can work, game, shop, and socialize online without worry. No gimmicks, no bloat, no hassles, and no slowdowns.

Protects against over 2.1 Million different viruses and threats

System Shield finds and removes stubborn and dangerous PC infections, and then permanently protects your system from all future attacks.

Blocks and removes all forms of PC threats:

Viruses Spyware Worms Trojan Horses Rootkits Bots Keyloggers Adware Backdoors

Tracking Software Polymorphic Attacks Information Warfare Password Theft Identity Theft Crimeware Ransomeware Scumware ...and more

Never gets in your way

System Shield uses a revolutionary approach that allows it to ensure real-time threat protection with a virtually invisible footprint and nearly zero resource consumption.

• Won't interrupt games, videos, or other programs with annoying popups.
• Doesn't weigh your system down with unnecessary add-ons or background activities.
• Neutralizes threats swiftly and quietly so you never miss a beat as you use your PC.

Permanent pest removal

Even the most stubborn and persistent infections are no match for System Shield's advanced seek-and-destroy methods. It hunts down and exterminates all resident computer pests and parasites, restoring system stability and freeing up resources to instantly boost PC performance and reliability. After your PC is infection-free, System Shield then intelligently seals off any open entry-points to shut out future threats and malicious programs for good.

Invisible real-time protection

System Shield's active defense technology is designed to be virtually invisible, so it
never bothers you with annoying alerts or overactive security messages. And, because it uses less memory and fewer CPU resources than any other security software we've tested, you'll be working and playing faster than ever before - with none of the slowdowns normally associated with antivirus and antispyware software.

Gamers and power users rejoice

Tired of having to turn off your PC's security program because it interferes with your gaming and other high-performance computing experiences? We challenge you to find any performance hit while System Shield is running. No slowdowns, no interrupting pop-ups—just effective, lean and mean protection.

No-compromise intelligent design

Until now, performance enthusiasts had to choose between either overloaded layers of security or quick system response. System Shield bridges the gap by providing 100% protection from viruses, spyware and all other known (and undiscovered) threats, without unneeded bells and whistles. Get everything you need to stay secure, and nothing you don't.

How is this possible?

System Shield's intelligent design and exclusive technology drawn from over a decade of optimization experience, Terabytes of iolo Labs analysis, and proprietary knowledge enables the product to tailor itself specifically to each PC for fine-tuned operation like no other security software. Advanced features and technologies include:

	iolo AntiVirus™ to block viruses, malware, Trojans, rootkits, bots and all other dangerous programs and threats.
	iolo AntiSpyware™ to eradicate spyware, adware, keyloggers and all other privacy-compromising and system-debilitating parasites.
	HyperScan™ Technology provides an invisible suit of armor for your PC that instantly nullifies external attacks in real-time.
	Sentient™ Technology uses exclusive artificial intelligence heuristics to preemptively recognize malicious behavior and neutralize rogue or mutated programs and other yet-unclassified threats.

Powerful high-performance protection includes

System Shield® uses performance-tuned HyperScan™ Technology and intelligent Sentient™ Technology in a revolutionary approach that efficiently integrates the iolo AntiVirus™ engine and iolo AntiSpyware™ for absolute protection against PC threats without compromising PC performance.

iolo AntiVirus™

The powerful iolo AntiVirus engine detects, blocks and removes computer viruses, rootkits, worms, bots and all other malicious infections. With active protection, integrated email scanning and hourly updates, your computer is effectively shielded from danger.

Invisible real-time protection. Provides an impervious shield for your PC that's always working. It instantly detects and blocks dangerous programs, stopping threats before they occur without impacting system performance.

Integrated email protection. Automatically scans and disinfects email messages sent and received by your PC as they are being transmitted, not only protecting your own PC from harm, but also preventing you from accidentally infecting people you know.

Periodic system inspections. When your PC is on but not being used, System Shield will perform periodic inspections as a second level of protection, combing your system for any dangerous and suspicious programs that may cause harm.

Convenient on-demand scanning. If a file, program, folder or other part of your PC is ever suspected of infection, you can perform a comprehensive scan that will disable any threats and provide you with a full security analysis report.

Daily updates. Virus signatures are updated automatically every day, ensuring continual protection from the latest threats.

iolo AntiSpyware™

Spyware silently installs itself on your PC and then begins collecting and sending your personal and financial information back to its source. Your passwords, shopping habits and even credit card or banking details can be compromised, resulting in identity theft, credit card fraud and worse. In addition, spyware commonly causes system conflicts and errors and wastes valuable memory, leading to overall sluggish performance, freeze-ups, crashes and even data loss.

Complete protection. Eliminate annoying stubborn and offensive pop-up windows and other unwanted ad content, tracking mechanisms that monitor internet browsing, backdoors that enable covert control, keyloggers that can record keyboard and mouse activity and more.

HyperScan™ Technology

Performance-tuned through collaboration between System Shield engineers and rigorous velocity testing by iolo Labs researchers, HyperScan Technology is at the core of the revolutionary System Shield engine, designed to ensure and sustain peak PC performance while at the same time representing the next generation of comprehensive threat protection.

Sentient™ Technology

Often, the most dangerous and aggressive attacks use approaches that make them extremely difficult to identify through "signature-based" recognition techniques. Ultra-destructive bots, worms, Trojans and other parasites can collaborate, morph and disguise themselves in an attempt to outsmart known antivirus protection techniques. In these circumstances, standard security software is left defenseless as malicious programs slip through undetected because they don't match anything in a virus definition database.

To combat these fast-emerging and more cunning techniques, System Shield uses Sentient™ Technology, an exclusive Artificial-Intelligence heuristics engine that actively observes, learns and adapts to unclassified malicious attacks based on behavioral analysis. With Sentient Technology, your PC stays safe from harm and infection regardless of how threats mutate or attempt to outsmart its defenses.

Blocks and removes all forms of parasites and malicious threats for total system protection

With System Shield 4 you can shop, bank, surf, and socialize online without having to worry about picking up an infection. All known viruses and spyware and any new or previously unknown threats are detected and stopped dead in their tracks, leaving you free to focus on more productive and enjoyable activities.

PC & Data Destroyers

Viruses - spread quickly from PC to PC, causing damage Worms - from infected email, can render a PC useless Trojan Horses - a virus disguising itself as a useful program Rootkits - allow hackers to remotely hijack your PC Polymorphic Attacks - fast-mutating viruses that use shapeshifting techniques to outsmart security programs Information Warfare Attacks - viruses that hijack your PC to launch attacks on corporate networks

Personal Information Thieves

Spyware - sends your private data back to an attacker Password Theft - sends your passwords to a hacker Identity Theft - gives hackers data to steal your identity Tracking Software - sends data out as you use your PC Botnets - turn your PC into a zombie to send spam and viruses Keyloggers - send personal and financial data to thieves Adware - bombards you with annoying and offensive popups Backdoors - allow attackers to remotely log into your PC

Money Embezzlers

Crimeware - tricks you into installing, then steals your money Ransomware - holds your PC hostage, until you pay up Scareware - scares you into paying to fix fake problems Scrumware - forces you to view fake, dangerous websites

Superior Detection Technology

System Shield 4 achieves such strong performance and protection advantages by employing iolo's exclusive HyperScan™ and Sentient™ technologies. These proprietary artificial intelligence systems instantly recognize and block newly created virus mutations, shape-shifters, and other as-yet-unclassified threats.

Dedicated to Maximum PC Performance

Why settle for security software that hoards so much memory and resources that it actually slows your system down? System Shield 4 is designed by iolo technologies – the global experts in PC performance software – so you can rest assured it is streamlined for high speed and efficiency.

System Requirements

Frequent questions

Watch System Shield in action

Videos

Take a tour of System Shield Take a quick tour of System Shield and see how to access all of the security features in the program.

Scan your whole PC for infections Learn how to run a full scan, which checks your entire computer - all files and folders, memory, and boot records - for viruses, spyware, and other infections.

Screenshots

Overview - good	Overview - warning
Scan	Disinfection
Definitions	Protection