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Hackers Hit Memory Supplier Western Digital, My Cloud Service Goes Down

The company is warning the breach might disrupt some of its business operations. The login portal for My Cloud currently says '503 Service Temporarily Unavailable.'

 & Michael Kan Principal Reporter

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Hackers managed to pilfer data from memory maker Western Digital in a breach that has also ensnared the company's My Cloud service.

The California-based company today disclosed it had suffered a “network security incident” that was first detected on March 26.  

“Based on the investigation to date, the company believes the unauthorized party obtained certain data from its systems and is working to understand the nature and scope of that data,” Western Digital said in the announcement

The company is also warning the breach “may continue to cause disruption” to certain parts of Western Digital’s operations. Over the weekend, users began reporting that the company’s personal cloud storage service for consumers, My Cloud, was inaccessible. The login portal for My Cloud currently says: "503 Service Temporarily Unavailable."

Western Digital says it's working to take certain systems and services offline as a “proactive measure,” likely to isolate and purge the hackers’ access from the company’s IT systems. It's not clear if the memory maker suffered a ransomware attack, which can encrypt entire computer systems. The company didn’t immediately respond to a request for comment. 

Western Digital has only said the hackers “gained access to a number of the company’s systems,” without elaborating. It's now working with security experts and law enforcement. But for now, the investigation remains in its early stages. 

Western Digital produces consumer data storage devices, such as SSD drives, HDD drives, and memory cards, along with storage products for data centers. So the breach could be far reaching depending on what systems the hackers managed to access.

About Our Expert

Michael Kan

Michael Kan

Principal Reporter

My Experience

I've been a journalist for over 15 years. I got my start as a schools and cities reporter in Kansas City and joined PCMag in 2017, where I cover satellite internet services, cybersecurity, PC hardware, and more. I'm currently based in San Francisco, but previously spent over five years in China, covering the country's technology sector.

Since 2020, I've covered the launch and explosive growth of SpaceX's Starlink satellite internet service, writing 600+ stories on availability and feature launches, but also the regulatory battles over the expansion of satellite constellations, fights with rival providers like AST SpaceMobile and Amazon, and the effort to expand into satellite-based mobile service. I've combed through FCC filings for the latest news and driven to remote corners of California to test Starlink's cellular service.

I also cover cyber threats, from ransomware gangs to the emergence of AI-based malware. In 2024 and 2025, the FTC forced Avast to pay consumers $16.5 million for secretly harvesting and selling their personal information to third-party clients, as revealed in my joint investigation with Motherboard.

I also cover the PC graphics card market. Pandemic-era shortages led me to camp out in front of a Best Buy to get an RTX 3000. I'm now following how the AI-driven memory shortage is impacting the entire consumer electronics market. I'm always eager to learn more, so please jump in the comments with feedback and send me tips.

The Best Tech I've Had:

  • My first video game console: a Nintendo Famicom
  • I loved my Sega Saturn despite PlayStation's popularity.
  • The iPod Video I received as a gift in college
  • Xbox 360 FTW
  • The Galaxy Nexus was the first smartphone I was proud to own.
  • The PC desktop I built in 2013, which still works to this day.

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