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How can I protect against a malicious Javascript exploit?

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For the second time in a few months, my browser pops up a new tab with a big red page claiming my computer has been infected and all kinds of badness is happening. And Windows itself becomes completely locked up. I needed to take it down for a hard boot. Upon recovering my system and looking at my browser history, I see that there is a huge pile of calls to some purported service: arrideral.info -- so the computer lock-up would seem to have been due to some (assumed) Javascript running in some site which is running the multiple calls and bogging down Windows to the point where it is unresponsive. Obvious malicious intent. How can I avoid this? (BTW I got this info from wa-com.com: "Arriederal.info is registered since 10 September 2019. Arriederal.info IP is 167.114.45.229. Arriederal.info is hosted in Canada (Montréal, Quebec). " )

For the second time in a few months, my browser pops up a new tab with a big red page claiming my computer has been infected and all kinds of badness is happening. And Windows itself becomes completely locked up. I needed to take it down for a hard boot. Upon recovering my system and looking at my browser history, I see that there is a huge pile of calls to some purported service: arrideral.info -- so the computer lock-up would seem to have been due to some (assumed) Javascript running in some site which is running the multiple calls and bogging down Windows to the point where it is unresponsive. Obvious malicious intent. How can I avoid this? (BTW I got this info from wa-com.com: "Arriederal.info is registered since 10 September 2019. Arriederal.info IP is 167.114.45.229. Arriederal.info is hosted in Canada (Montréal, Quebec). " )
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Additional System Details

Installed Plug-ins

  • Shockwave Flash 32.0 r0

Application

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:69.0) Gecko/20100101 Firefox/69.0

More Information

Wesley Branton
  • Top 10 Contributor
589 solutions 4997 answers

The easiest way to prevent infections is to have an anti-virus and firewall setup on your system. There are a variety of free and premium solutions available to install.

If you believe that you have an infection, you should run a malware scan. I'd highly recommend this for you. You can try these free programs to scan for malware, which work with your existing antivirus software:

Microsoft Security Essentials is a good permanent antivirus for Windows 7/Vista if you don't already have one. Windows 8/10 have antivirus protection built-in.

Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Hope this helps.

The easiest way to prevent infections is to have an anti-virus and firewall setup on your system. There are a variety of free and premium solutions available to install. If you believe that you have an infection, you should run a malware scan. '''I'd highly recommend this for you.''' You can try these free programs to scan for malware, which work with your existing antivirus software: * [https://www.microsoft.com/en-us/wdsi/products/scanner Microsoft Safety Scanner] * [http://www.malwarebytes.org/products/malwarebytes_free/ MalwareBytes' Anti-Malware] * [http://support.kaspersky.com/viruses/disinfection/5350 Anti-Rootkit Utility - TDSSKiller] (for more info, see this [https://www.bleepingcomputer.com/download/tdsskiller/ alternate TDSSKiller download page]) * [https://www.malwarebytes.com/adwcleaner/ AdwCleaner] (for more info, see this [http://www.bleepingcomputer.com/download/adwcleaner/ alternate AdwCleaner download page]) * [http://www.surfright.nl/en/hitmanpro/ Hitman Pro] * [http://www.eset.com/us/online-scanner/ ESET Online Scanner] [https://support.microsoft.com/help/14210/security-essentials-download Microsoft Security Essentials] is a good permanent antivirus for Windows 7/Vista if you don't already have one. Windows 8/10 have antivirus protection [https://www.microsoft.com/windows/comprehensive-security built-in]. Further information can be found in the [[Troubleshoot Firefox issues caused by malware]] article. Hope this helps.
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FredMcD
  • Top 10 Contributor
4245 solutions 59390 answers

Also, Go to the Mozilla Add-ons Web Page {web Link} (There’s a lot of good stuff here) and search for a good ad blocker.

Also, Go to the [https://addons.mozilla.org/en-US/firefox/ Mozilla Add-ons Web Page] {web Link} (There’s a lot of good stuff here) and search for a good ad blocker.
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