"Your OS Sierra is infected with (3) viruses!" Scam - Remove It
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“Your OS Sierra is infected with (3) viruses!” Scam – Remove It

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Note! Your system might be affected by Your OS Sierra is infected with (3) viruses! and other threats
Threats such as Your OS Sierra is infected with (3) viruses! may be persistent. They tend to re-appear if not fully deleted. A malware removal tool like Combo Cleaner will help you to remove malicious programs, saving you the time and the struggle of tracking down numerous malicious files.
Combo Cleaner’s scanner is free but the paid version is needed to remove the malware threats. Read Combo Cleaner’s EULA and Privacy Policy.

Your OS Sierra is infected with (3) viruses! scam message loaded by lp.tweakingtools.info website

This is an article that provides details on Your OS Sierra is infected with (3) viruses! message and presents a complete set of removal steps.

”Your OS Sierra is infected with (3) viruses!” is a scam message that attempts to trick you into downloading hoax cleanup software. According to its text, your Mac is infected with malware that endangers your personal and banking information. Beware that this information is misleading. However, there is still a chance that an undesired program installed on your Mac is causing the appearance of this scam message.

Threat Summary

NameYour OS Sierra is infected with (3) viruses!
TypeScam
Short DescriptionScam message that interrupts browsing sessions in an attempt to scare you and urge you to follow misleading steps.
SymptomsYou see a message that claims your Mac has been infected with serious malware infections along with an offer to reslove the issues.
Distribution MethodBundled packages; Freeware installers
Detection Tool See If Your System Has Been Affected by Your OS Sierra is infected with (3) viruses!

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User ExperienceJoin Our Forum to Discuss Your OS Sierra is infected with (3) viruses!.

Your OS Sierra is infected with (3) viruses! – Spread Mechanisms

A probable reason of witnessing redirects to questionable websites that show ”Your OS Sierra is infected with (3) viruses!” scam message is the presence of an undesired program on your device. Programs of this kind often land on users devices as part of other desired applications. This spread technique is called software bundling and its main purpose is to trick you into installing additional and mostly undesired programs without noticing their presence.

For the purpose, installers of such deceptive freeware do not disclose properly all apps that are going to be installed after a click on their Finish button. Happily, sometimes you have the chance to outsmart this shady technique and prevent installing potentially undesired apps. It is usually hidden in the Advanced/Custom setup option. Once you select this way of installing your freshly downloaded app, you could be presented with more details on the presence of extra apps, choose only those you desire and then proceed further.

Your OS Sierra is infected with (3) viruses! – More About This Scam

”Your OS Sierra is infected with (3) viruses!” is one of many scam messages that are spreading across the web. All these messages present users scary “facts” about their devices in an attempt to convince them into downloading rogue programs. Once your browser loads the website that hosts ”Your OS Sierra is infected with (3) viruses!” you see the following message:

Your OS Sierra is infected with (3) viruses! scam message loaded by lp.tweakingtools.info website

Your OS Sierra is infected with (3) viruses!
Your OS Sierra is infected with (3) viruses. Our security check found traces of 2 malware and 1 phishing/spyware. System damage: 28.1% – Immediate removal required!
The immediate removal of the viruses is required to prevent further system damage, loss of Apps, Photos or other files. Traces of 1 phishing/spyware were found on your OS Sierra with.
Personal and banking information are at risk.
To avoid more damage click on ‘Scan Now’ immediately. Our deep scan will provide help immediately!
0 minutes and 00 seconds remaining before damage is permanent.

Currently, the domain address lp.tweakingtools.info is the one associated with this new scam message. However, there may be many more domains that are set to display the same message.

Soon after this page loads you a pop-up appears on screen to present you more false data:

second message displayed by Your OS Sierra is infected with (3) viruses! scam sensorstechforum

Text on pop-up:

IMMEDIATE ACTION REQUIRED
We have detected a Trojan virus (e.tre456_worm_osx) on your Mac.
Press OK to begin the repair process.

We know that is sounds devastating but don’t be scared. This information along with the ineffective timer are misleading. As you may already guess that the purpose of this scam message is to urge you to click on the ”Scan Now” and resolve all malware issues that endanger your Mac. However, by doing so you could only create some issues and this time they will be for real.

It appears that the app that ”Your OS Sierra is infected with (3) viruses!” attempts to push one of those rogue clean up utilities that have exactly the opposite effect. The program is called Mac Cleaner and similar to

What is Mac Auto Fixer rogue software? How to remove Mac Auto Fixer from your computer? How to make sure that you stop seeing auto scans by Mac Auto Fixer?
Mac Auto Fixer and
What is Mac Heal Pro? How to remove the Mac Heal Pro app from your Mac effectively? How to make sure you do not see automatic scans by Mac Heal Pro again?
Mac Heal Pro it is considered to be a fake system optimizer. Once installed such apps demand you to run a scan of your device. This scan almost always ends with the report of various types of fake errors detections in order that you will be more prone to purchase the full version of the product and resolve the issues.

In fact, this type of scam has been harassing online users for quite a long time. Our team has detected and reported a few more messages that are similar to this scam. Among them are

What is the ?Your Mac Might Be Infected? scam page? What triggers web pages like ?Your Mac Might Be Infected? one to appear on your Mac? How to stop It?
”Your Mac Might Be Infected”,
Remove the "MAC OS is infected with Spyware" scam in full. Follow the "MAC OS is infected" tech support scam removal instructions at the end of the article.
“MAC OS is infected with Spyware” and
What is e.tre456_worm_osx infection? What is the Your system is infected with 3 viruses! redirect web page? How to remove the e.tre456_worm_osx scam?
Your system is infected with 3 viruses!

The best you can do in case that you have detected such a scam to appear on your Mac is to focus on detecting if there are some potentially unwanted and harmful files running on your system and remove them as soon as possible. You could use the information below for the process.

Remove “Your OS Sierra is infected with (3) viruses!” Scam

In order to remove ”Your OS Sierra is infected with (3) viruses!” scam message and all files that may be causing its appearance in the browser you should complete the set of removal steps presented below. You could choose between manual and automatic removal approach but what we recommend for maximum security is their combination. The automatic approach guarantees good efficiency as after a scan with an advanced anti-virus tool you could see the exact location of all suspicious files and remove them.

In case that you have further questions or need additional help, don’t hesitate to leave a comment or contact us via email.

Note! Your computer system may be affected by Your OS Sierra is infected with (3) viruses! and other threats.
Scan Your MAC with Combo Cleaner
Combo Cleaner is a powerful malware removal tool designed to help users with in-depth system security analysis, detection and removal of threats such as Your OS Sierra is infected with (3) viruses!.
Keep in mind, that Combo Cleaner needs to purchased to remove the malware threats. Click on the corresponding links to check Combo Cleaner’s EULA and Privacy Policy.

Manually delete Your OS Sierra is infected with (3) viruses! from your Mac

1. Uninstall Your OS Sierra is infected with (3) viruses! and remove related files and objects
2. Remove Your OS Sierra is infected with (3) viruses! – related extensions from your Mac’s browsers

Automatically remove Your OS Sierra is infected with (3) viruses! from your Mac

When you are facing problems on your Mac as a result of unwanted scripts and programs such as Your OS Sierra is infected with (3) viruses!, the recommended way of eliminating the threat is by using an anti-malware program. Combo Cleaner offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.


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Gergana Ivanova

Gergana Ivanova

Gergana has completed a bachelor degree in Marketing from the University of National and World Economy. She has been with the STF team for three years, researching malware and reporting on the latest infections. She believes that in times of constantly evolving dependency of network connected technologies, people should spread the word not the war.

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