Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Crypto currency miners FF popups.

more options

Twice this week at Yahoo news I did not click on any links but moved mouse around web page and a crypto currency miner window opened in FF and stated my computer was locked. I had to force shutdown my computer. Opera just added in their browser a crypto currency blocker and it perfectly described to me what happened on my computer. I think this is only going to get worse because I already use Ublock and no script addons. Here is the article, http://www.zdnet.com/article/opera-just-added-a-bitcoin-mining-blocker-to-its-browser/ I am using Windows 10 fall update and FF version 57.02 Of course Windows Defender did not help at all.

Twice this week at Yahoo news I did not click on any links but moved mouse around web page and a crypto currency miner window opened in FF and stated my computer was locked. I had to force shutdown my computer. Opera just added in their browser a crypto currency blocker and it perfectly described to me what happened on my computer. I think this is only going to get worse because I already use Ublock and no script addons. Here is the article, http://www.zdnet.com/article/opera-just-added-a-bitcoin-mining-blocker-to-its-browser/ I am using Windows 10 fall update and FF version 57.02 Of course Windows Defender did not help at all.

All Replies (3)

more options

mredlithuanianirishguy said

I think this is only going to get worse because I already use Ublock and no script addons.

Perhaps you are allowing too much stuff in NoScript?

Also make sure your uBlock Origin has the Resource Abuse filter or NoCoin list (used by Opera) enabled.

https://github.com/hoshsadiq/adblock-nocoin-list/

more options

Chosen Solution

Modified by James

more options

Thanks everyone. Just in case if anyone wants to know what the 2 pop up windows looked like when it happened to me, here is the link to the discussion about it and figure 4 is exactly the windows that popped up. http://blog.trendmicro.com/trendlabs-security-intelligence/eitest-campaign-uses-tech-support-scams-deliver-coinhives-monero-miner/ I also had another popup window asking for user name and password and I think that is for if you called the fraudulent 1800# entering a username and password might have installed something with administrative privileges. I do appreciate the addon suggestions. That saved me a lot of time trying to figure out what words to use to search for an addon.