You might have unwanted software or malware installed on your computer if you experience:
- Pop-up ads and new tabs that won't go away
- Your Chrome homepage or search engine keeps changing without your permission
- Unwanted Chrome extensions or toolbars keep coming back
- Your browsing is hijacked and redirects to unfamiliar pages or ads
- Alerts about a virus or an infected device
Tips:
- Use Safe Browsing in Chrome
- Avoid malware in the future
- Learn how to block or allow pop-ups in Chrome
Turn pop-ups on or off
- On your iPhone or iPad, open Chrome
.
- Tap more
settings
.
- Tap Content settings
- Turn Block pop-ups on or off.
.
settings 
.Allow pop-ups for a specific site
Not all pop-ups are ads or spam. Some legitimate websites display web content in pop-up windows.
- On your iPhone or iPad, open Chrome
- Go to a page where pop-ups are blocked.
- At the bottom, under 'Pop-ups blocked', tap Always show.
Fix issues with pop-ups
If you're on a page with a pop-up or dialog that won't go away, try these steps:
- On your iPhone or iPad, turn aeroplane mode on.
- Close the tab with the unwanted pop-up or dialog box.
- Close Chrome.
More info about malware
How to spot malware (video, 1:42)Three tips for spotting malware (1:42)
Learn what to look for when you have malware on your computer and how to stay safe online.
Learn what to look for when you have malware on your computer and how to stay safe online.
- Beware of sites that may cause you to download unwanted software. For example, if you win a contest or get copyrighted content at no charge.
- Beware of encrypted archives, like .zip files with a password required, that may bypass antivirus detection scans.
- Beware of warnings about viruses or infected devices, especially if you haven’t recently used a virus scanner.
- Avoid insecure connections when you visit sites and don’t download files from sites that don’t start with HTTPS. Learn how to check if a site's connection is secure.
- Pay attention to Safe Browsing download warnings. To avoid antivirus detections, malicious actors may ask you to turn off or ignore warnings.
- If a popup about a program update or download seems suspicious, don't click on it. Instead, go to the program's official website to download it.