Windows Security Alert: what it is and how to remove it

No, absolutely not. 'Windows Security Alert' is a tech support scam impersonating Microsoft and Windows. Microsoft and legitimate software providers never send pop-up alerts on web browsers demanding immediate action.

The 2020 guide confirmed these alerts are fraudulent content designed by scammers, not genuine security warnings. The pop-up claims your device has been infected with suspicious activity, but this is false.

No connection exists between Microsoft or Windows and the scammers behind these messages. The fake alert displays a code like 055BCCAC9FEC and claims you must contact Windows Help Desk at a specific phone number. Ignore this message completely.

Clicking the alert or following its instructions leads to serious consequences. You will be redirected to a malicious website operated by criminals. If you call the provided phone number, scammers will convince you to download software or grant them remote access to your computer.

Hackers may install remote access tools (RATs) or info-stealing malware on your machine. They might record your screen, keystrokes, and steal passwords, credit card details, and personal information.

The criminals will then sell this data to other cybercriminals or use it for identity theft. According to the 2020 guide, connecting with these scammers directly exposes you to severe financial and privacy risks that can persist long after the initial contact.

Never call the number shown in the pop-up. The phone number provided in 'Windows Security Alert' (such as 1-844-826-1198) connects directly to scammers, not legitimate Microsoft support.

Calling will result in a conversation with criminals who use social engineering and technical jargon to confuse and manipulate you. They will pressure you to pay for 'services' or trick you into revealing sensitive information like passwords and credit card numbers.

The 2020 guide warned that victims who called this number often ended up with additional malware installations or lost money. There is no legitimate support team behind these calls. The best response is to close the browser tab and ignore the warning entirely.

The 'Windows Security Alert' pop-up is caused by adware or a potentially unwanted program (PUP) running on your computer in the background. This adware redirects your browser to malicious websites that display the fake alert.

The malicious website triggers the pop-up each time you visit, creating a vicious cycle. The underlying PUP was likely installed through freeware bundling, deceptive ads, or compromised websites. Bundling is a technique where developers hide unwanted programs in the installation setup of legitimate software.

Users who select Quick or Recommended installation options unknowingly install the adware. Simply closing the pop-up is temporary; the adware remains and will show more alerts. Removing the underlying PUP is necessary to stop the redirects completely.

'Windows Security Alert' spreads primarily through bundled freeware installations and deceptive advertising networks. Users download seemingly legitimate software but unknowingly install adware as a hidden component. The 2020 guide identified several distribution methods:

• visiting high-risk websites (adult sites, illegal downloads)
• clicking deceptive ads
• landing on pages with malicious redirects

Potentially unwanted programs may install additional adware or browser extensions without your knowledge. Some victims arrive at the scam website after visiting legitimate sites compromised by malvertising. Drive-by downloads can also trigger unwanted installations.

Users who rush through software installation by clicking Quick or Recommended settings are especially vulnerable. The guide emphasized avoiding torrents, suspicious file-sharing sites, and unverified download sources to prevent infection.

Yes, this scam can lead to severe malware infections. The 2020 guide warned that victims who follow the scammer's instructions often end up with remote access tools (RATs), info-stealing malware, or spyware installed on their machines. Scammers may also install fake security software that pretends to fix problems while actually gathering your personal information.

Even if the initial PUP showing the alert is relatively harmless, the real danger comes from what scammers install remotely. Additionally, the adware already on your system may have installed data-tracking technologies and unknown browser extensions without your knowledge. These tools can steal sensitive details and expose your personal information online, leading to identity theft and financial fraud.

First, close the browser tab—do not click any buttons. Install reputable anti-malware software and perform a full system scan to remove the underlying adware causing redirects.

Your anti-malware tool will detect and remove the PUP and related programs. After removal, restart your computer and check browser settings for suspicious extensions or toolbars. Clear your browser cache, cookies, and temporary files.

If pop-ups continue, run another full system scan. Reset your browser to default settings if extensions keep reappearing. Update your operating system and all software to patch vulnerabilities.

The 2020 guide recommended checking all browsers for hijacked settings. If problems persist, consider using additional security tools to ensure complete removal of all adware components and related tracking software.

If you called the scammers or granted remote access, significant damage has occurred. They may install keyloggers to record passwords and personal information. Your bank accounts, email, and social media are at risk.

Credit card numbers could be stolen and misused. The scammers sell your personal data on dark web forums, leading to identity theft and fraud. Your computer is now infected with additional malware.

Contact your bank immediately if financial information was shared. Change all passwords from a secure device. Monitor your credit reports for unauthorized accounts or charges.

The 2020 guide emphasized that victims faced ongoing privacy issues and financial losses for months. Consider credit monitoring services. Report the scam to your local fraud department and the FTC to help protect others.

Fortect scans Windows for malware and unwanted programs and repairs the system files and settings they change, and its free scan shows what it finds on your PC before you decide anything.

For Windows Security Alert, follow the plan above as well: the browser steps take back permissions and settings that no scanner treats as a threat, and uninstalling the program that brought it removes the source.

Run Microsoft Defender's full scan and, if anything was found, its offline scan as a second opinion. If the symptoms are gone after the plan and both scans are clean, there is nothing more to do.