Use a text editor to look through any .js files for potential malicious scripts or to understand exactly what the "alilauta" tool is doing to your browser data.
The name "Alilauta" suggests the extension is likely designed to modify or enhance the experience of Finnish imageboards. Common features for extensions in this category include: alilauta.xpi
Hiding specific threads, changing layout styles, or adding custom themes. Use a text editor to look through any