LONDON: NASA 's Mars rover ' Curiosity ' might be facing a hacking threat from the notorious hacker group, Anonymous , a US security firm has claimed.The group, Anonymous had reportedly brought down websites including Visa and several US Government sites as a protest against WikiLeaks founder Julian Assange 's arrest, and 'Curiosity' could be their next target, the Daily Mail reported.A New York security firm claimed to have spotted a message on an Internet Relay Chat (IRC) asking for help to hack into the signals NASA uses to communicate with the Curiosity rover.Flashpoint Partners spotted a message by user 'MarsCuriosity' in one of the Anonymous-related IRC channels that it monitors known as the AnonOps IRC channel."Anyone in Madrid, Spain or Canbarra who can help isolate the huge control signal used for the Mars Odyssey / Curiosity system please?" the message read."The cypher and hopping is a standard mode, just need base frequency and recordings/feed of the huge signal going out. (yes we can spoof it both directions!)," it added.There is speculation by online discussion groups that the message could be a fake, or even an attempt by law enforcement agencies to trap hackers, the report said.'Curiosity' had made a spectacular landing in Gale Crater at 05:30 GMT (11:00 IST) on August 6 in a two-year search to find out if the red planet once hosted conditions suitable for life.