Have you seen this pop-up?
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Do not trust such updates of browser-detector.com domain. Even though its name looks legitimate, users should note that it is a fake update offered by adware, which tries to cheat you to download dubious programs and earn pay-per-download revenue.
Browser-detector.com infected common browsers like Google Chrome, Mozilla Firefox and Internet Explorer. It is spread by malicious pages or bundled into third party installations. The pop-ups will come back again and again if you don't remove the adware completely. When you see similar pop-ups, you should try reliable AV program to scan your computer and remove this adware in time.