NEW : ` What 's clear , '' Cluley wrote , `` is that mischief-makers are upsetting many Facebook users and making the social networking site far from a family-friendly place . '' Facebook has used browsers to spread porn , violent images . NEW : The site says most of the offensive content has been removed . Members of hacker collective Anonymous claim they used a virus to attack Facebook . Facebook : No data or account information was used in the attack .
NEW : Facebook has used browsers to spread porn , violent images . NEW : The site says most of the offensive content has been removed . Members of hacker collective Anonymous claim they used a virus to attack Facebook . Facebook : No data or account information was used in the attack .