Earlier today I warned you about a third-party Facebook application called “Error Check System” that has been moving in mysterious ways on the social network.
Naturally, a lot of people will have been searching for information about “Error Check System” and if you were to enter the name of the application into Google you would probably see results something like this:
If you click on that first result you’ll be taken to a webpage which appears to contain links about “Error Check System”, but also contains code that loads an obfuscated script from another website.
That encrypted script checks to see whether you have arrived via search engine. If you haven’t, it displays a fake 404 page not found message. But if it does believe you have arrived via a search engine like Google it will redirect your browser to another website which initiates a fake anti-virus scan.
Read more in my article on the Naked Security website.
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