Remove SystemExtr (Mac OS X) virus

If you are getting notifications from SystemExtr, then your Mac is infected with adware. SystemExtr is adware for Mac. SystemExtr changes setting in your Mac. First, SystemExtr installs a browser extension in your browser. Then, after SystemExtr hijacks your browser, it modifies settings in the browser. For example, it changes the default home page, modifies

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Remove GeneralOperation (Mac OS X) virus

If you are getting notifications from GeneralOperation, then your Mac is infected with adware. GeneralOperation is adware for Mac. GeneralOperation changes setting in your Mac. First, GeneralOperation installs a browser extension in your browser. Then, after GeneralOperation hijacks your browser, it modifies settings in the browser. For example, it changes the default home page, modifies

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