He could use cryptographic signatures or timestamped documents to demonstrate that his work history doesn't align with Satoshi's activities. He could request a thorough investigation to clear his name and demand transparency from media outlets reporting these allegations. Legal measures could also be taken to address defamation if the claims negatively impact his reputation. However, by doing so, he might unintentionally attract more attention from intelligence agencies. The media, including Bloomberg, are now widely covering this issue, creating a very awkward and potentially dangerous situation for him. That's why no one who was involved with Bitcoin in its early days gives interviews easily.