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The Windows Defender Security Center Alert is a web browser based tech support scam that tries to trick you into calling a remote support number. This alert display an alert that pretends to be Windows defender security states that your device is under threat. It then prompt you to call a remote support number. As this is a scam, you should not call the listed phone number as they will just try to sell you unnecessary services and software.

  • Windows Defender Security Center Tech Support Scam
  • Windows Defender Security Center Tech Support Scam

When the Windows Defender Security Center Alert is displayed in your browser it will display an alert that contains text similar to the following messages:

Windows defender security center

Windows Defender Security Center.

Last threat scan: 11/10/2017
Last threat definition update: 11/10/2017
Last threat scan: 11/10/2017

Turn on Real-time protection? Yes/No

Virus & Threat Protection
Real-time protection is off.
Leaving your device vulnerable

Device performance & health
No action needed

Firewall & network Protection
No action needed

Turn On

Windows Defender found some Malicious Spyware/Riskware. Please call us immediately at:


Do not ignore this critical alert. If you close this page, your computer access will be disabled to prevent further damage to our network. Your computer has alerted us that it has been infected with a Spyware and riskware.

You must contact us Immediately so that our expert engineers can walk you through the removal process over the phone to protect your identity. Please call us within the next 5 minutes to prevent your computer from being disable of from any information loss.

Once again, this is just a fake alert and the page does not know if your computer has an error or a virus, does not know what is running on your computer, and is just trying to trick you into calling the phone number. At this same time, for those who have never seen a message like this, they can be quite alarming as these scams make it difficult to close browser tabs or the browser itself.

Thankfully, almost all browser based tech support scams can be closed by simply opening Windows Task Manager and ending the browser process. It is important, though, that if you end the browser process that you do not reopen previously closed sites if prompted by the browser when you start it again.

On the other hand, if you are constantly seeing these types of tech support scams, or these pages are opening by themselves, then it may be possible that you are infected with an adware or other unwanted program that are displaying them. Once again, do not worry as it is quite easy to remove these infections if you follow the guide below.

Why am I Seeing the Windows Defender Security Center Alert?

The Windows Defender Security Center Alert is shown through advertisements that redirect you to sites that display this scam. These advertisements can be displayed by installed adware programs or through less than reputable sites that are displaying them to generate advertising revenue.

For the most part, if you see a browser based tech support scam, then you can simply close the browser and start it again. On the other hand, if you are continuously seeing scams with alerts like “Windows Defender Security Center”, then you should scan your computer for adware and remove anything that is found.

Your computer should now be free of the Windows Defender Security Center Tech Support Scam program. If your current security solution allowed this program on your computer, you may want to consider purchasing the full-featured version of Malwarebytes Anti-Malware to protect against these types of threats in the future.

If you are still having problems with your computer after completing these instructions, then please follow the steps outlined in the topic linked below:

At L Technology Group, we know technology alone will not protect us from the risks associated with in cyberspace. Hackers, Nation States like Russia and China along with “Bob” in HR opening that email, are all real threats to your organization. Defending against these threats requires a new strategy that incorporates not only technology, but also intelligent personnel who, eats and breaths cybersecurity. Together with proven processes and techniques combines for an advanced next-generation security solution. Since 2008 L Technology Group has develop people, processes and technology to combat the ever changing threat landscape that businesses face day to day.

Call Toll Free (855) 999-6425 for a FREE Consultation from L Technology Group,