Threat Database Browser Hijackers 'Important Security Alert From Windows' Pop-Ups

'Important Security Alert From Windows' Pop-Ups

By GoldSparrow in Browser Hijackers

The 'Important Security Alert From Windows' pop-up windows that users may experience at 4xt-setup.win should not be trusted. The 4xt-setup[.]win domain is part of a network of sites that are used to promote computer support services on the 866-995-5065 phone line. However, the 866-995-5065 phone line is not associated with a legitimate company. The services advertised via the 'Important Security Alert From Windows' are provided by con artists who pretend to be employees at Microsoft Corp. and offer help to users who can't remove the 'Important Security Alert From Windows' alerts. The warnings on your screen may be loaded by a browser hijacker that has entered your system.

Also, Web surfers may be redirected to pages like 4xt-setup[.]win that are designed to cause navigation problems and suggest the users that their PCs may be infected and they need to call numbers like 866-995-5065. The sites associated with the 'Important Security Alert From Windows' alerts may feature a script that is designed to keep a dialog box on your screen and prevent your browser from switching to a new tab and load bookmarks. The behavior may be interpreted by some users as a sign of a security breach, and you may consider calling the 866-995-5065 toll-free phone line. The 'Important Security Alert From Windows' pop-ups are reported to include the Microsoft logo and the following text in the background:

'Microsoft
CALL: (866)995-5065
Warning - Your IP address : [YOUR REAL IP ADDRESS] was blocked for security reasons.
Please CALL Toll Free on (866)995-5065
ERR_INTERNET_DISCONECTED
You may be a victim of online fraud, spyware and virus may have infected device at your network
location may have compromised
Call (866)995-5065'

Users might notice that another text message is presented in the foreground, which says:

'IMPORTANT SECURITY ALERT FROM WINDOWS : YOUR COMPUTER HAS BEEN BLOCKED
Windows has detected some suspicious activity from your IP address.
Some virus and spyware have caused a security breach at your network location.
Please call us immediately at the toll-free number listed so that our engineers can walk you through the removal process over the phone.
Call us immediately on our Toll Free (866)995-5065 for Technical Assistance.
***********************************
Toll Free (866)995-5065
*********************************** Please do not use any internet based services to avoid any identity thefts.
PLEASE DO NOT SHUT DOWN OR RESTART YOUR COMPUTER. DOING THAT LEAD TO DATA LOSS AND FAILIURE OF OPERATING SYSTEM HENCE NON BOOTABLE SITUATION RESULTING COMPLETE DATA LOSS.'

Computer security experts advise users against making contact with the con artists on the 866-995-5065 toll-free phone line. The team that is related to the 'Important Security Alert From Windows' warnings may attempt to convince them that their machines are infected with spyware, and they need to use help from a technician if they want to secure their online banking accounts. Users may be invited to allow a remote desktop connection to their PCs and subscribe to a premium technical support plan that may cost up to 600 USD. Needless to say, you should not fall for the tricks that the crooks linked to the 4xt-setup[.]win domain may employ. PC users may want to install a reliable security suite on their systems that is designed to eliminate browser hijacking software and unwanted apps related to the 'Important Security Alert From Windows' alerts.

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