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system blocked by intruder

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jpdough37
jpdough37
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I am running an iMac that is about eight years old.This afternoon my Firefox browser was taken over by a "warning" from "MacOS security center" that I should go to THEIR macOS support site to get my system unfrozen. The number they give is 1-877-xxx-xxxx. I cannot get this intruder to go away, even by restarting the computer.

I am running an iMac that is about eight years old.This afternoon my Firefox browser was taken over by a "warning" from "MacOS security center" that I should go to THEIR macOS support site to get my system unfrozen. The number they give is 1-877-xxx-xxxx. I cannot get this intruder to go away, even by restarting the computer.

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Hi

As a first step, please can you try clearing your browsing history. This support article should help:

https://support.mozilla.org/en-US/kb/delete-browsing-search-download-history-firefox

Further to this, have you installed any add-ons recently or perhaps other apps on your device?

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Paul
Paul
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Hi

As a first step, please can you try clearing your browsing history. This support article should help:

https://support.mozilla.org/en-US/kb/delete-browsing-search-download-history-firefox

Further to this, have you installed any add-ons recently or perhaps other apps on your device?

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