FBI arrests Massachusetts man for cyberstalking Katie Miller after internal agency dispute

Key points

• John Anthony Proia III, 41, of Waltham, Massachusetts, was indicted by a federal grand jury in Boston on Thursday for one count of cyberstalking.
• The indictment alleges Proia sent more than 40 calls, texts, and voicemails to Katie Miller between August and September, often using expletives and a menacing tone.
• Proia used Voice over Internet Protocol (VoIP) applications to obfuscate his identity and generate new phone numbers, according to the Justice Department.
• The charges also include disturbing messages sent to Katie Miller’s parents, including one that referred to Stephen Miller as 'evil' and another that called Katie Miller a 'creature.'
• The case followed a dispute at the FBI’s Washington Field Office, where two senior counterterrorism agents were demoted after the Millers complained that the agency was not investigating the threats adequately.
• Katie Miller, a former Trump administration adviser and conservative podcaster, retweeted Attorney General Todd Blanche’s post on the case, thanking the DOJ and FBI for protecting her and her family.

Background

Katie Miller, a former Trump administration official and conservative podcaster, is married to Stephen Miller, the White House deputy chief of staff for policy. The Millers have faced multiple harassment incidents, including a 2025 complaint about activist Barbara Wien, which led to a federal investigation that ended without charges. The current case follows a high-profile internal FBI dispute where two counterterrorism officials were demoted for initially refusing to investigate the threats against the Millers.

How outlets are covering it

CBS News, The New York Times, NBC News, and Politico all reported on the indictment of John Anthony Proia III for cyberstalking Katie Miller. CBS News and NBC News emphasized the internal FBI dispute and the demotion of two counterterrorism officials, while The New York Times focused on the details of the threatening messages and the use of VoIP to obfuscate Proia’s identity. Politico highlighted the broader context of political violence and harassment in a polarized nation. All sources confirmed that the Justice Department did not name the Millers in the indictment, but sources familiar with the case confirmed that Katie Miller was the victim.

Why it matters

The case highlights the challenges of investigating harassment against high-profile political figures and the potential for internal agency disputes to delay justice. It also underscores the use of technology, such as VoIP, to obfuscate identity in cyberstalking cases. The incident may influence future policies on investigating harassment against public officials and their families.

What to watch

John Anthony Proia III was due to appear in federal court on Thursday. The case may lead to further scrutiny of the FBI’s handling of harassment cases against political figures and their families. It may also prompt discussions about the use of VoIP in cyberstalking and the need for better tools to identify and track such communications.