The Trump campaign has confirmed that some of its internal communications were hacked, attributing the breach to "foreign sources hostile to the United States." The acknowledgment followed POLITICO's receipt of emails from an anonymous account containing internal Trump campaign documents. The campaign pointed to a recent Microsoft report that Iranian hackers had targeted a high-ranking official on a U.S. presidential campaign in June. However, Microsoft did not specify which campaign. The hack is seen as a significant security breach, and the scope of the information obtained by the hacker remains unclear.