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Pop-ups can be ads, notices, offers, or other alerts that open over or under your browser window, in another tab, or in your current window. Some pop-ups use phishing tactics—like warnings or prizes—to trick you into believing they’re from Apple or another trusted company, so you’ll share personal or financial information. Others might claim to offer free downloads, software updates, or plugins, to try to trick you into installing unwanted software.
Unless you’re confident of an ad’s legitimacy, you should avoid interacting with pop-ups or webpages that seem to take over your screen. Here are additional tips that can help you manage pop-ups and other unwanted interruptions.
Check and update your software
Always make sure you install the latest software updates for all your Apple products. Many software releases have important security updates and may include improvements that help control pop-ups.
The safest place to download apps for your Mac is the Mac App Store. If you need third-party software for your Mac, and it isn’t available in the App Store, get it directly from the developer or another reliable source, rather than through an ad or link.
Check Safari settings and security preferences
Make sure Safari security settings are turned on, particularly Block Pop-ups and Fraudulent Website Warning.
https://nexbrown619.weebly.com/blog/download-dr-cleaner-mac. On your iPhone, iPad, or iPod touch, go to Settings > Safari and turn on Block Pop-ups and Fraudulent Website Warning.
On your Mac you can find these same options in the Security tab of Safari preferences. You can also click the Extensions tab in Safari preferences to check if you have any extensions installed that you prefer to turn off.
Pop-ups and ads in Safari
If you see an annoying pop-up in Safari, you can go to the Search field and enter a new URL or search term to browse to a new site. If you don’t see the Search field on your iPhone, iPad, or iPod touch, tap the top of the screen to make it appear.
Some popups and ads have fake buttons that resemble the close button, so use caution if you try to close a pop-up or ad. If you're unsure, avoid interacting with the popup or ad and close the Safari window or tab.
If you might have installed adware or other unwanted software on your Mac
If you see pop-ups on your Mac that just won’t go away, you might have inadvertently downloaded and installed adware (advertising-supported software) or other unwanted software. Certain third-party download sites might include programs that you don’t want with the software that you install.
If you think that you might have malware or adware on your Mac, update to the latest version of macOS. If your Mac is already running the latest version, restart it. macOS includes a built-in tool that removes known malware when you restart your Mac.
Check your Applications folder to see if you have any apps that you didn’t expect and uninstall them. If you continue to see advertising or other unwanted programs on your Mac, contact Apple.
Though it's not easy to hack into or break through a Mac's security, it is possible, especially if someone accidentally installs malware without realizing it. If your Mac is running slow or you're seeing unusual advertisements within your web browser you might have accidentally installed malware at some point. Don't worry. It happens to the best of us (not me, of course). There are things you can do without having to burn it all down.
The problem: Mac malware in the Library folder
Serenity Caldwell writing for iMore in 2017:
My father-in-law's MacBook Pro had been running into curious slowdowns for a two-year-old laptop and he kept on seeing weird sites taking over his Safari and Firefox search bars. It was clear to me that his browser had been hijacked.
We got rid of the browser hijack pretty quickly — I suggest using Cella's excellent how-to if you ever run into a browser hijack yourself — but the slowdowns were more curious. Upon further investigation, I found a couple of self-professed 'Mac security programs' that popped up, demanding money to 'clean your Mac from junk'.
Spoiler: These programs were the junk. And worst of all, they'd seemingly added a bunch of nonsense files into this computer's Library folder, with random folder names like 'prestidigitation' and 'beeswax'.
Now, I want to preface: I'd never seen an attack like this on a Mac before in my life, and finding this kind of full-Mac hijack is very rare. It's likely that he accidentally installed one of these 'security' programs (or had it installed), which spiraled out of control from there.
These hijacks didn't appear to be able to do much beyond slow down his machine with endless failed attempts to run a program — the process didn't have admin permissions, so it couldn't execute a thing from the library. But because they were there, they were constantly crashing aspects of his Mac. I knew I had a malfunctioning laptop on my hands, so I turned to my age-old troubleshooting checklist.
How to fix a corrupted Mac
If you're working on a computer that has slowed down beyond reasonable aging or is otherwise acting beyond the pale, here are my favorite tactics you can take to try and restore it to its former glory.
Update the system software
This is almost always the first thing I do when troubleshooting Macs: Chances are, the user hasn't installed a security update or other software updates that may be slowing their computer to a crawl.
If the computer is running macOS Sierra, you can avoid having to do this troubleshooting step in the future by turning on Automatic Install in System Preferences, which can automatically download newly available updates in the background, and install them overnight.
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Check the disk for errors
If software updates aren't doing the trick, the next thing to check is the hard drive itself. With Apple's Internet Recovery partition, fixing a cranky drive is an easy process.
Your Mac will then run a cursory check on its hard drive to determine if there's anything wrong — and if so — if it can fix it.
Reset the NVRAM/PRAM and SMC
If neither app updates nor disk repair are helping, sometimes a good cache flush can get your Mac running just a bit more smoothly.
To reset the NVRAM (or, on older Macs, PRAM), reboot the Mac and hold down the following keyboard command during startup for at least twenty seconds: Command-Option-P-R.
After you reset your NVRAM, you may be required to reconfigure some system settings (like sound and time zones), which are stored in that cache.
An SMC reset is a bit more complicated, and Apple recommends it only after all other troubleshooting avenues have been exhausted.
If you're using a laptop:
If you're using a desktop:
Partition your disk (or erase it)
After exhausting all other avenues, this was the solution we came across to properly fix the broken laptop. The hard drive had been so corrupted by these 'security' programs that there was nothing I could do to fix it. When Safari launched over the login screen after a reboot, I knew my usual fixes wouldn't work: It was time to bring out the big guns.
In most cases, I'd grab an external drive, back up the corrupted disk, then wipe the drive clean with the Internet Recovery partition and start over. But there were a couple of reasons that wouldn't work here:
Given that this laptop had a 500GB hard drive — only 40GB of which was being used — I had an alternate idea: I'd partition the drive, again using Internet Recovery, and install macOS Sierra on the new partition. Essentially, it would be a 'clean' new computer for my father-in-law to work on, but all the original data would still exist on the old partition in case he needed to grab a file.
Note: In order to partition your drive, you'll need enough free space on your drive to do so — at least 30GB. If you're light on space, you may want to back up your corrupted disk to a USB drive, instead.
How to create a partition on your Mac
Disk Utility will check the disk and make changes. This will take several minutes.Disk Utility will then make the changes. After that's completed, quit Disk Utility to return to the main Internet Recovery menu.
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After you finish setting up the new hard drive, it's time to move your files over. Because of the way partitioning works, your old hard drive partition will show up next to your currently-active partition, just like an external drive; you can then grab any files you need from it.
Note: If you want to copy over applications, I'd strongly suggest redownloading them from the source — the Mac App Store or the company's website — rather than trying to copy them over from the old partition.
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From here, you can follow instructions for setting a Mac up from scratch when it comes to installing and customizing anything else.
I generally recommend keeping the old drive partition around for at least a few months in case you or your family member forgets to move something over; after that period, however, you can easily delete the old partition and move to the new partition full time.
Consider additional anti-malware protection
While malware on the Mac is rare, it does crop up, as we've demonstrated. Having the right tools to get rid of malware can be an important part of keeping your Mac safe and secure. There are a number of tools that you can choose from, including popular programs like BitDefender and Kaspersky, that will help you keep malware from infecting your Mac.
Questions?
Do you have any must-follow troubleshooting steps? Let us know in the comments.
Updated July 2019: Added a sub-section regarding anti-malware protection.
Serenity Caldwell contributed to an earlier version of this guide.
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