If you’ve installed Tampermonkey extension from Chrome Web Store in Opera browser and using it, you’ll notice today you’ll be alerted by a warning that “Opera has blacklisted one of your extensions, and we’ve blocked it for your safety. Go to the extensions manager for more details”. Visiting extensions manager reveals Opera has blocked Tampermonkey citing it as malicious and informs the user he can either leave or remove it. The issue has also been reported by various users in Opera forum.
Here is the warning is shown: “We’ve identified this extension as malicious and have blacklisted it. This means it can no longer cause any damage to your machine, You can leave it as is or remove it”.
Though there is Opera add-ons Store, most users prefer installing the extensions from Chrome Web Store as they’re updated frequently by developers, same the case with Tampermonkey, available on Web Store and Opera add-ons site. While Opera is not blocking Tampermonkey extension installed from its store, but it is not the latest version, to be honest.
Re-enable blacklisted Tampermonkey Chrome extension in Opera
There are no recent negative reviews or comments on Tampermoneky Chrome extension page on Web Store to support Opera claim as malicious, it could be false positive or bug on Opera’s side, if you want to re-enable blacklisted Tampermonkey extension in Opera, you can, here is how.
1. Open Opera, click on menu> Help > About Opera, copy Oper profile path to the clipboard and close the browser.
2. Use either Run dialog or paste the above-copied path in Explorer address bar to open that location.
3. Select Preferences file, and right click and choose open with > Notepad,
4. Visit Tampermonkey Extension page on Chrome Web Store in another browser and copy the extension ID (“dhdgffkkebhmkfjojejmpbldmpobfkfo”)as you can see it in the address bar right after extension name.
5. Now use Find dialog to search for it in the preferences file and set ‘blacklist’ to ‘false’ and ‘blacklist_state’ to ‘0’.
6. Save the changes to Opera Preferences file and close it.
Now launch Opera, visit extension manager, you’ll see activated Tampermonkey extension without blocked and blacklisted and malicious warning.
Note: We request you not to do this for other extensions flagged by Opera or Chrome, do proper research before and take a decision before attempting to activate blocked extensions.
January 06. 2019 Update: Tampermonkey developer posted about this issue on GitHub and contacted Opera to review the extension and heard back from them that they’re suspicious on Chrome version of Tampermonkey is being distributed by malware’.
Here is what Opera said to the developer what contacted via his developer account:
“Hi, we have reasonable suspicion that the extension (with Chrome version’s id) is distributed by malware and used as a vehicle to circumvent our acceptance criteria for browser extensions [1]. This puts our user’s privacy and security at risk and is also a problem for us for multiple reasons. If Tampermonkey fulfills our acceptance criteria then what I can suggest is to submit the current version of the extension to our addons and let the moderators verify it.”
You can see the list of extensions blacklisted by Opera here.
Meanwhile, developer suggests users to try to re-enable the extension if possible and backup scripts, restore them after installing the beta version of extension from Chrome Web store which has not been blacklisted at the moment.
Tampermonkey beta [Chrome Web Store]
Related articles:
Opera 55 improves Chrome Extensions Install Experience on Web Store
Fix Chrome’s Error: ‘This extension may have been corrupted by malware’
Fix “Google Has Flagged “IDM Integration” as malicious and installation has been Prevented”
Fix Chrome’s ‘Suspicious extensions disabled’
5 Comments