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HighData breachOct 8, 2026

US Offers $10M Bounty for Suspect Behind Massive Microsoft Exchange Hacks

The United States government is offering up to $10 million for information on an individual charged over the global HAFNIUM Microsoft Exchange server intrusions. These attacks compromised thousands of corporate email systems, allowing hackers to steal proprietary communications and compromise business networks. The indictment underscores the ongoing, severe risks facing businesses that run internet-facing servers without rigorous defence and monitoring.

Data breach security briefing

Who is affected

Organizations operating on-premises Microsoft Exchange servers or legacy email infrastructure exposed to the internet.

How to mitigate it

  1. 1Identify and inventory all on-premises Microsoft Exchange servers exposed to the public internet.
  2. 2Verify that all Microsoft Exchange systems have the latest security updates and patches fully installed.
  3. 3Restrict external administrative access to email servers by using a secure virtual private network with multi-factor authentication.
  4. 4Evaluate migrating on-premises email systems to modern, managed cloud environments like Microsoft 365.

How Outsource IT solves this

Managed Cybersecurity & Threat Protection delivers continuous 24/7 monitoring and threat detection to identify unauthorized server access and stop intrusions before corporate data is compromised.

Managed Cybersecurity & Threat Protection

Tags

Microsoft ExchangeHAFNIUMData BreachEmail Security

Source advisory: the-hacker-news

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