Hi Opera users,

We would like to address an issue involving F.B.(FluffBusting)Purity, an add-on developed by st333v and hosted on Opera’s Add-ons Store. We wish to reiterate that the F.B.(FluffBusting)Purity add-on is safe, and st333v is a verified developer in good standing.

Keeping users safe is a high priority for us. Browser add-ons can be powerful and can be vulnerable to exploitation. This is why we have manual reviews and systems in place to identify potential issues before they reach users. In this blog, we wish to discuss this specific event where our security system returned a false positive, and to apologize to the developer.

What happened

15 January 2026, 16:03 CET: Developer st333v uploads a new version of his add-on, F.B.(FluffBusting)Purity, on the Add-ons store. By mistake, he uploads a Manifest V2 version of the add-on, which Opera’s Add-ons store no longer supports for new add-ons.

15 January 2026, 16:40 CET: st333v requests assistance with removing this version, so that the correct version of the add-on can have the same version number as in other browser stores and avoid discrepancies.

15 January 2026, 16:58 CET: An Opera team member assists with this task, and the correct version is uploaded by st333v on the same day, at 19:14 CET.

16 January 2026, 08:24 CET: The new version is approved and published on Opera’s Add-ons store.

19 January 2026, 00:24 CET: The developer and users of the add-on notice that F.B.(FluffBusting)Purity has been flagged by the system as malicious, and users have received notifications that the add-on has been blacklisted. The developer raises the issue with Opera.

19 January 2026, 11:23 CET: Our team begins investigating in order to address the error and restore the add-on. 

22 January 2026, 12:30 CET: The system problems are resolved and the developer is invited to re-upload the correct version of the add-on.

22 January 2026, 14:25 CET: st333v re-uploads the correct version.

22 January 2026, 14:50 CET: The new version is approved and published on Opera’s Add-ons store.

An apology, and next steps

We apologize for the confusion and inconvenience that this incident caused, particularly to st333v. We appreciate his collaboration and patience while we worked to resolve the issue as quickly as possible.

We have addressed the bug that led to this development, and we are taking steps to ensure that incidents such as this are not repeated in the future.

The F.B.(FluffBusting)Purity add-on is fully restored on Opera’s Add-ons store and is safe to use, as it always has been.

We thank everyone for their patience and understanding.

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