Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

Optimizely For 3 days when I start FF everyday I get a cookie "25134714.log.optimizely.com". Is this coming from FF? Read about it, but don't understand it.

  • 3 replies
  • 2 have this problem
  • 1 view
  • Last reply by Linda33

Linda33
Linda33

I have FF 19.0.2 on a MacBook Pro. I'm wondering if a program is optimizing my computer without my knowing it. How do I get rid of it? or should I not worry about it. TY

I have FF 19.0.2 on a MacBook Pro. I'm wondering if a program is optimizing my computer without my knowing it. How do I get rid of it? or should I not worry about it. TY

Chosen solution

Linda33,
"Optimizely" is a company that tracks user behaviour on and across websites using cookies and a bit of javascript that web-masters voluntarily insert into their code. So mozilla.org has chosen to use this third party tracker, but it doesn't do anything that helps you.

So in addition to blocking third-party cookies, use the addon Ghostery at https://addons.mozilla.org/en-US/firefox/addon/ghostery/ . After you install it you can block these trackers. For eg, on this site you can click on the "Ghost" icon, then click on the slider next to "Optimizely" to permanently block it.

In fact, you can set Ghostery to block all trackers by default. Very occasionally you'll find one that is required (such as the Disqus tracker to enable their comment servers) but it's easy to selectively turn it back on again for that one tracker.

Read this answer in context 👍 6

All Replies (3)

philipp
philipp
  • Moderator

Enhanced Tracking Protection in Firefox for desktop

Paul451
Paul451

Chosen Solution

Linda33,
"Optimizely" is a company that tracks user behaviour on and across websites using cookies and a bit of javascript that web-masters voluntarily insert into their code. So mozilla.org has chosen to use this third party tracker, but it doesn't do anything that helps you.

So in addition to blocking third-party cookies, use the addon Ghostery at https://addons.mozilla.org/en-US/firefox/addon/ghostery/ . After you install it you can block these trackers. For eg, on this site you can click on the "Ghost" icon, then click on the slider next to "Optimizely" to permanently block it.

In fact, you can set Ghostery to block all trackers by default. Very occasionally you'll find one that is required (such as the Disqus tracker to enable their comment servers) but it's easy to selectively turn it back on again for that one tracker.

Modified by Paul451

Linda33
Linda33 Question owner

Thank you Madperson and Paul for your responses, appreciate your time.

I will try the Ghostery and also block the third party cookies.