System Mechanic Ultimate Defense 20.5

Total Performance, Protection & Privacy for Your Digital Life

System Mechanic Ultimate Defense 20.5
Total Performance, Protection & Privacy for Your Digital Life
Total Performance, Protection & Privacy for Your Digital Life
Total Performance, Protection & Privacy for Your Digital Life
Total Performance, Protection & Privacy for Your Digital Life
Total Performance, Protection & Privacy for Your Digital Life

  • Optimize PC speed
  • Block and remove malware
  • Recover irreplaceable files
  • Permanently delete sensitive data
  • Shield your online habits from spying eyes
  • Enhance identity theft protection
  • Stop browser tracking cookie cleaners miss
  • Secure and manage all your passwords


System Mechanic Ultimate Defense is the all-in-one suite 
of iolo’s premiere security, privacy and optimization products.

There are a frightening number of security and performance vulnerabilities in modern computing as methods for stealing your data, hacking your PC or bogging you down in bloatware, spam and pop-up ads grow more sophisticated every minute. 

In such fraught times, iolo technologies, maker of the best-selling PC optimization software System Mechanic®, delivers the most comprehensive security, privacy and optimization package yet to help safeguard, speed up and simplify your digital life.

 Prevent Windows Slowdown with System Mechanic 

The seven-time winner of the PC Magazine Editors’ Choice Award, System Mechanic is the only performance solution that first deploys a series of complex automated maintenance actions to help keep your PC stable and clutter-free.

System Mechanic then goes to work using proprietary technology to precision-tune dozens of internet, processor, memory and hard drive settings in real time for maximum system speed and performance.

 Online Privacy Protection with Privacy Guardian

Online privacy protection thwarts browser fingerprinting scripts by scrambling the data they rely upon to gain vast amounts of personal information about you.

Imagine being denied credit because a company has secretly collected data, however out of context, that suggests you are an irresponsible shopper. That is just one of the many ways personal data collected online can be used against you.

Privacy Guardian works to help protect you from targeted ads, identity theft, fraud and invasion of privacy. Surf privately and secure your browsers for true online privacy.

 Safe, Simple Password Security with ByePass

ByePass simplifies your digital life while securing it. ByePass is a platform-agnostic, secure password manager that also helps protect your online purchases.

With ByePass, malicious intermediaries are also thwarted from stealing your credit card info because the numbers are locally encrypted and only deployed as needed to make purchases.

Never again will you need to insecurely type or store passwords and credit cards in your web browser where keyloggers and hackers can steal them.

 Block Malware with System Shield 

System Shield is a VB100-certified anti-malware solution that deploys both reactive and proactive malware detection strategies.

  • A reactive strategy detects viruses using published malware signature detection.

  • A proactive strategy uses sophisticated behavior-monitoring techniques to build a general sense of whether a given file intends to harm your computer, stopping attacks before a security patch for a particular threat is released.

 Find and Destroy Existing Malware with Malware Killer
Malware is a rapidly growing threat today as almost one million new viruses, worms, Trojans, rootkits and species of spy- and ransomware are released daily.

Yet most anti-malware software on the market only blocks malware and has no way to remove it from a computer once infected. Several antivirus manufacturers instead even direct customers to costly premium phone support to help remove malware remotely.

Malware Killer is the nuclear option that finds and removes dangerous malware from already-infected computers.
Malware Killer is unique among malware remediation software because it uses proprietary Scan Cloud™-based scanning and analysis, enabled by its own carefully developed heuristics algorithm to dramatically reduce detection time for brand new outbreaks. This method allows Malware Killer to continually add to a vast “reputation database,” and even detect previously unknown threats.

 Recover Lost Data with Search and Recover

Search and Recover deploys powerful technology to retrieve items many other file-recovery products miss. Rescue critical work and cherished memories you thought were lost for good.

Get back accidentally deleted documents, music, photos, email, videos, system files and even entire folders from many types of hard drives, cameras and other devices.

 Permanently Erase Sensitive Data with DriveScrubber

DriveScrubber safely and permanently deletes sensitive data from entire hard drives with military-grade file deletion technology.

Threats to your privacy and security come in many forms. One way is when users fail to eradicate their personal information when selling, donating or recycling a computer.
Optimize your PC in 3 Steps Back to the top

PC Performance Features Back to the top
  • System Mechanic offers two scan modes: Quick Scan and Deep Scan. You may choose Deep Scan mode by clicking the Deep Scan button. A deeper system analysis will begin.

  • Boosts Speed

Automatically increases the speed and availability of CPU, RAM and hard drive resources when you launch high-demand apps for the smoothest gaming, editing and streaming.

  • Repairs Problems

Finds and fixes over 30,000 different problems using intelligent live updates from iolo Labs™ to keep your PC stable and error-free.

  • Removes Bloatware

Identifies unwanted startup programs that slow you down by launching and running without your knowledge.

New in 20.5 Version Back to the top

Enhanced Privacy Guardian:

New! Disable Cortana virtual assistant

This commonly used feature sends to Microsoft enormous amounts of data related to precisely how you use your computer.

New! Disable camera and microphone access

When access to these tools is enabled by default, you are allowing all of the apps on your computer access to them. Many types of malicious attacks access camera and microphone through vulnerable apps, to spy on you or steal your personal information.

New! Disable activity history collection

This feature, particularly when the Send my activity history to Microsoft box is also checked, risks exposing unknown quantities of information on how you use the apps and services on your computer.

New! Phishing Detector

This new technology within Privacy Guardian looks to see whether incoming email is from a proxy DNS server, a common indicator of potential phishing attacks as the sender attempts to mask their identifying information, such as true IP address.

Enhanced! Digital Fingerprinting Protection

Privacy Guardian has been re-engineered to help stop aggressive new online tracking, profiling and data-mining methods that can detect and collect very specific information about you and your computer use. One click turns on this powerful new online protection.


Enhanced In-product Tutorial walks you through even more ways you can optimize your internet privacy, including:

  • Enabling Fingerprinting Protection to thwart the newest forms of online tracking

  • Disabling more Windows® data-sharing features, including:

  • Cortana

  • Camera and microphone

  • Activity history collection

  • Setting the Phishing Detector to discover and block suspicious emails

  • Customizing which tracking cookies and browsing data you want Privacy Guardian to clear whenever it cleans, including:

- Address bar history

- Autocomplete

- Download history

- HTTP cookies

- Saved passwords

- Website history


New! Chrome Install Option

If you do not already have the Google Chrome browser installed on your PC, an option is presented to do so during the installation of System Mechanic.

System Requirements Back to the top
Version 20.5
Platform Windows 7, Windows 8, Windows 10
  • 1 Year License
  • OS: Windows 7/8/10