In 2013, the FBI exploited a zero-day vulnerability in Firefox to seize control over a Dark Web network of child pornography sites. The alleged owner of that ring – 33-year-old Freedom Hosting operator Eric Eoin Marques – was arrested in Ireland later that year on a U.S. warrant and has been in custody ever since. This week, Ireland’s Supreme Court cleared the way for Marques to be extradited to the United States.
A claimed zero-day vulnerability in Firefox 17 has some users of the latest Mozilla Firefox browser (Firefox 22) shrugging their shoulders. Indeed, for now it appears that this flaw is not a concern for regular, up-to-date Firefox end users. But several experts say the vulnerability was instead exposed and used in tandem with a recent U.S. law enforcement effort to discover the true Internet addresses of people believed to be browsing child porn sites via the Tor Browser — an online anonymity tool powered by Firefox 17.