The below mentioned guide will help you scan your Mac for spyware infections and remove them. It is recommended to follow the instructions carefully to avoid facing problems. It will save your time and money that would undeniably be wasted looking for offline or online virus removal or spyware removal support options.
Instructions:
Go to Applications and then Utilities folder. Launch Activity Monitor and choose All Processes from the given dropdown options. Type 'PremierOpinion' (without quotes and as is) in the search box and hit Enter on the keyboard. If the search brings up any result, your Mac has a spyware that needs removal. Click to select the process and press the Quit Process button to kill it. If nothing comes in search results, it has no spyware infection and is safe.
Update your Mac to download and install latest software updates and patches. Click on the Apple menu and then select Software Update. Wait until all the updates have been duly downloaded and installed. When done, connect to the internet and download and install MacScan from its official website or a random one. Install the software and run a full system scan.
If you downloaded the demo version, it will only scan for infections but not remove them. Wait until the scanning completes and shows you the list of all the infected files. Either download a paid version to remove them or perform a manual removal by going into the desired locations of the infections. You can also consider other security programs like McAfee, Kaspersky, or Norton etc. for virusspyware scans and removal. All of them do a good job in the detection and removal of infections.
Once you are done checking for and removing spyware or viruses, enable FileVault2 in your Mac and forget everything. It encrypts your entire hard drive and allows only the authorized user accounts (if you have multiple) to access or boot your Mac. Go to System Preferences and then Security & Privacy. Highlight the FileVault tab and then enable it. Exit all the windows.
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