Responding to Data Breach at Contractor | CMS – CMS
The Department of Health and Human Services (HHS) and the Centers for Medicare & Medicaid Services (CMS) have responded to a May 2023 data breach in Progress Softwares MOVEit Transfer software on the corporate network of Maximus Federal Services, Inc. (Maximus), a contractor to the Medicare program, that involved Medicare beneficiaries personally identifiable information (PII) and/or protected health information (PHI). No HHS or CMS systems were impacted. Maximus is among the many organizations in the United States that have been impacted by the MOVEit vulnerability. This week, CMS and Maximus are sending letters to individuals who may have been impacted notifying them of the breach, and explaining actions being taken in response. CMS estimates the MOVEit breach impacted approximately 612,000 current Medicare beneficiaries.
CMS and Maximus are notifying Medicare beneficiaries whose PII and/or PHI may have been exposed that they are being offered free-of-charge credit monitoring services for 24 months. This notification also contains information about how impacted individuals can obtain a free credit report, and, for those beneficiaries whose Medicare Beneficiary Identifier number may have been impacted, information on receiving a new Medicare card with a new number.
Below please find a sample of the letter being sent to those who are potentially affected:
Dear <
The Centers for Medicare & Medicaid Services (CMS), the federal agency that manages the Medicare program, and Maximus Federal Services, Inc. (Maximus), are writing to inform you of an incident involving your personal information related to services provided by Maximus. Maximus is a CMS contractor that provides appeals services in support of the Medicare program.
The incident involved a security vulnerability in the MOVEit software, a third-party application which allows for the transfer of files during the Medicare appeals process. Maximus is among the many organizations in the United States that have been impacted by the MOVEit vulnerability.
We are sending you this letter so that you can understand more about this incident, how we are addressing it, and additional steps you can take to further protect your privacy. We are providing information with this notice on free credit monitoring services and, if your Medicare Beneficiary Identifier (MBI) was impacted, will be giving you a new Medicare card with a new Medicare Number. This does not impact your current Medicare benefits or coverage.
What Happened?
Our understanding is as follows: On May 30, 2023, Maximus detected unusual activity in its MOVEit application. Maximus began to investigate and stopped all use of the MOVEit application early on May 31, 2023. Later that same day, the third-party application provider, Progress Software Corporation, announced that a vulnerability in its MOVEit software had allowed an unauthorized party to gain access to files across many organizations in both the government and private sectors.
Maximus notified CMS of the incident on June 2, 2023. To date, the ongoing investigation indicates that on approximately May 27 through 31, 2023, the unauthorized party obtained copies of files that were saved in the Maximus MOVEit application, but that no CMS system has been compromised. After notifying CMS, Maximus then began to analyze the files to determine which data had been affected. As part of that analysis, it was determined that those files contained some of your personal information.
What Information Was Involved?
We have determined that your personal and Medicare information was involved in this incident. This information may have included the following:
What Are We Doing?
When the incident was discovered, Maximus began an investigation, took the MOVEit application offline, applied MOVEit software patches, and notified law enforcement. CMS is continuing to investigate this incident in coordination with Maximus and will take all appropriate actions to safeguard the information entrusted to CMS.
What Can You Do?
Maximus is offering a complimentary 24 months of credit monitoring and other services from Experian at no cost to you. You do not need to use your credit card or any other form of payment to enroll in the service.
Please see Attachment #1 for information on how to utilize your free Experian Services.
Under federal law, you are entitled to one free credit report every 12 months from each of the three major nationwide credit reporting companies listed above. Call 1-877-322-8228 or request your free credit reports online at http://www.annualcreditreport.com. When you receive your credit reports, review them for problems. Identify any accounts you didnt open or inquiries from creditors that you did not authorize. Verify all information is correct. If you have questions or notice incorrect information, contact the credit reporting company.
Even if you dont find any suspicious activity on your initial credit reports, the Federal Trade Commission (FTC) recommends that you still check your credit reports periodically. Checking your credit report periodically can help you spot problems and address them quickly.
If you find suspicious activity on your credit reports or have reason to believe your information is being misused, call your local law enforcement agency and file a police report. Be sure to obtain a copy of the police report, as many creditors will want the information it contains to absolve you of the fraudulent debts. You may also file a complaint with the FTC by contacting them on the web at http://www.ftc.gov/idtheft, by phone at 1-877-IDTHEFT (1-877-438-4338), or by mail at Federal Trade Commission, Consumer Response Center, 600 Pennsylvania Avenue, NW, Washington, DC 20580. Your complaint will be added to the FTCs Identity Theft Data Clearinghouse, where it will be accessible to law enforcement for their investigations. In addition, you may obtain information from the FTC about fraud alerts and security freezes.
Please see Attachment #2 for additional steps you can take to protect your information.
At this time, we are not aware of any reports of identity fraud or improper use of your information as a direct result of this incident. However, if your MBI was impacted, a new Medicare card with a new number will be issued to you. CMS will mail the new card to your address in the coming weeks. In the meantime, you can continue to use your existing Medicare card. After you get your new card, you should:
For More Information
We take the privacy and security of your Medicare information very seriously. CMS and Maximus apologize for the inconvenience this privacy incident might have caused you.
If you have any further questions regarding this incident, please call the Experian dedicated and confidential toll-free response line at xxx-xxx-xxxx. This response line is staffed with professionals familiar with this incident who know what you can do to protect against misuse of your information. The response line is available Monday through Friday from 8 am 10 pm Central, or Saturday and Sunday from 10 am 7 pm Central (excluding major U.S. holidays).
You can also call 1-800-MEDICARE (1-800-633-4227) with any general questions or concerns about Medicare.
###
Get CMS news at cms.gov/newsroom, sign up for CMS news via emailand follow CMS on Twitter @CMSgov
Read more here:
Responding to Data Breach at Contractor | CMS - CMS
- I signed up to YouTube Premium exclusively for music videos, and its like MTV never left but theres one reason why I wont go beyond my free trial -... - April 21st, 2026 [April 21st, 2026]
- Microsoft College Offer doles out free software so that you forget that MacBook Neo is a better deal - Yahoo Tech - April 21st, 2026 [April 21st, 2026]
- The creative software industry has declared war on Adobe - The Verge - April 21st, 2026 [April 21st, 2026]
- Foundation Software and Hahn Loeser & Parks LLP to Host Free Webinar on Subcontractor Risk Management - Bluefield Daily Telegraph - April 21st, 2026 [April 21st, 2026]
- Top 7 Free Accounting Software for Clubs and Associations - Small Business Trends - April 10th, 2026 [April 10th, 2026]
- [un]prompted 2026 Code Is Free: Securing Software In The Agentic Future - Security Boulevard - April 7th, 2026 [April 7th, 2026]
- Best antivirus for Windows 11: Guide to choosing the right software - Acronis - April 7th, 2026 [April 7th, 2026]
- Work faster in Krita with these pro tips master the best free Photoshop alt - Creative Bloq - April 7th, 2026 [April 7th, 2026]
- JWM Guard Tour Patrol System - Battery Powered RFID Reader With LCD, Free Software For Security Monitoring - ruhrkanal.news - April 7th, 2026 [April 7th, 2026]
- Download the Free Guide: The 2026 Buyer's Guide to Hotel Management Software Released By Roommaster - Hotel News Resource - April 5th, 2026 [April 5th, 2026]
- Acer's Chromebook Plus Easter offer comes with free software worth more than the laptop itself, including GeForce Now - PC Guide - April 3rd, 2026 [April 3rd, 2026]
- Inside the German state trying to break free from Microsoft - Financial Times - April 3rd, 2026 [April 3rd, 2026]
- The Document Foundation Calls on Europe to Break Free from Proprietary Software - Linuxiac - April 3rd, 2026 [April 3rd, 2026]
- Fret Not, Some of These Apps are Free This Week! - nextpit.com - April 3rd, 2026 [April 3rd, 2026]
- Garmin smartwatch users may be green with envy over Coros latest free update - t3.com - April 3rd, 2026 [April 3rd, 2026]
- Get Your Free Apps of the Week Here! - nextpit.com - March 26th, 2026 [March 26th, 2026]
- Zeptive Software Update Boosts Vape Detection Performance - GlobeNewswire - March 22nd, 2026 [March 22nd, 2026]
- PRToolFinder Adds New Filters to Discover Free PR Tools and Free Software Trials Across its PR Tools Directory - Yahoo Finance - March 22nd, 2026 [March 22nd, 2026]
- Temecula DSP MDV-II: a free emulation of the Alesis MidiVerb II multi-FX processor - synth anatomy - March 22nd, 2026 [March 22nd, 2026]
- Garmins top smartwatches are getting a massive free software update here are the 2 best new features - MSN - March 22nd, 2026 [March 22nd, 2026]
- Sojus Records Ensoniq SD-1: an open-source emulation of the 1990 TransewaveTM synth - synth anatomy - March 22nd, 2026 [March 22nd, 2026]
- Chardet dispute shows how AI will kill software licensing, argues Bruce Perens - theregister.com - March 11th, 2026 [March 11th, 2026]
- Free income tax help and software are available in SC. Here's where and how. - Post and Courier - March 9th, 2026 [March 9th, 2026]
- 70% of taxpayers in the US can file taxes for free. Here's how - USA Today - March 9th, 2026 [March 9th, 2026]
- The complete guide to choosing the best free video editing software for high-quality content creation - AZ Big Media - March 9th, 2026 [March 9th, 2026]
- You can now use Elgato's mic and output mixing software with any device for free and I'm totally sold on it - PC Gamer - March 7th, 2026 [March 7th, 2026]
- Eligible N.Y. taxpayers can file their 2026 taxes for free: How to avoid hidden fees - SILive.com - March 7th, 2026 [March 7th, 2026]
- Volvo Puts Its Money Where Its Mouth Is, Sends UX-Upgrading Over-The-Air Software Update To 2.5 Million Cars - Jalopnik - March 7th, 2026 [March 7th, 2026]
- Best Pokies Software 2026 Real phoenix reborn slot free spins money Apps To have Pokies - Cutival Piura - March 7th, 2026 [March 7th, 2026]
- "Our vision for what creator audio should be" - Elgato launches Wave Next, a new generation of powerful audio hardware with software that's... - March 4th, 2026 [March 4th, 2026]
- Stop Paying for Tax Software Surprises: Know When to Use Paid or Free Versions - CNET - March 4th, 2026 [March 4th, 2026]
- Comparing Free Word Processing Software: Features and Compatibility - Techloy - March 4th, 2026 [March 4th, 2026]
- Winnipeg-based information technology consulting firm IDFusion Software Inc. celebrates 25 years of growth - Winnipeg Free Press - March 4th, 2026 [March 4th, 2026]
- The I.R.S. Shut Its Direct File, but Here Are Other Free Filing Options - The New York Times - February 27th, 2026 [February 27th, 2026]
- Tiagolr Rippler: free MPE physical modeling Synthesizer is the big brother of Ripplerx - synth anatomy - February 27th, 2026 [February 27th, 2026]
- Looking for Free Paid Apps on Your Phone? Check Out This Weeks Selection! - nextpit.com - February 26th, 2026 [February 26th, 2026]
- SpendHound Partners With Rooled to Give High-Growth Startups Free Visibility Into Software Spend - 01net - February 24th, 2026 [February 24th, 2026]
- Why PDFs are so hard to editand the one free app that actually works - How-To Geek - February 11th, 2026 [February 11th, 2026]
- People can't believe this retro cartoon was made in free 3D software - Creative Bloq - February 7th, 2026 [February 7th, 2026]
- Tech stocks go into free fall as it dawns on traders that AI has the ability to cut revenues across the board - Fortune - February 7th, 2026 [February 7th, 2026]
- These Premium Apps Are Now Free But Only for a Limited Time - nextpit.com - February 7th, 2026 [February 7th, 2026]
- Why UK Taxpayers Are Searching for the Best Free Tax Software in 2026 - openPR.com - February 7th, 2026 [February 7th, 2026]
- Aptitude Software Buys Back 23,000 Shares, Cuts Free-Float to 55.3 Million - TipRanks - February 7th, 2026 [February 7th, 2026]
- Dealers will update the batterys software and replace the battery if needed for free. - Facebook - February 4th, 2026 [February 4th, 2026]
- LibreOffice 26.2 Released With Many Refinements To This Open-Source Office Suite - Phoronix - February 4th, 2026 [February 4th, 2026]
- Use Your Library Card to Stream More Than 30,000 Movies for Free With This Streaming Service - CNET - February 4th, 2026 [February 4th, 2026]
- 7 open-source apps I'd happily pay for - because they're that good - ZDNET - February 1st, 2026 [February 1st, 2026]
- Fed up of subscriptions? Here's the free software every digital artist needs - Creative Bloq - January 24th, 2026 [January 24th, 2026]
- The Best Personal Finance and Budgeting Apps We've Tested for 2026 - PCMag - January 24th, 2026 [January 24th, 2026]
- Free download of software-defined automation application for manufacturing autonomy - Electropages - January 24th, 2026 [January 24th, 2026]
- Flexxbotics Releases Software-Defined Automation as Free Download to Accelerate Smart Manufacturing - Metrology and Quality News - January 24th, 2026 [January 24th, 2026]
- Richard Stallman to Speak on Software Freedom and AI at Georgia Tech - It's FOSS - January 24th, 2026 [January 24th, 2026]
- 'The Polar Loop is a capable heart rate tracker, but its activity tracking software stops it from being a Whoop-killer' - TechRadar - January 24th, 2026 [January 24th, 2026]
- Now or Never: These Apps Are Available for Free Right Now - nextpit.com - January 24th, 2026 [January 24th, 2026]
- GNU ddrescue 1.30 "Orders of Magnitude" Better In Recovery From Drives With A Dead Head - Phoronix - January 6th, 2026 [January 6th, 2026]
- Top 10 Free Gaming Tools and Must-Have Software Every PC Gamer Needs in 2026 - Tech Times - January 4th, 2026 [January 4th, 2026]
- Free Laptops with i3 Processor, 8GB RAM, and AI Software to Be Distributed Starting Tomorrow - indiaherald.com - January 4th, 2026 [January 4th, 2026]
- ReactOS Starts 2026 With Another "Major Step" Toward Windows NT6 Compatibility - Phoronix - January 4th, 2026 [January 4th, 2026]
- How to Break Up With Adobe in 2026: The Subscription-Free Creative Suite - Fstoppers - December 31st, 2025 [December 31st, 2025]
- Schleswig-Holstein will save 15 million in 2026 by dropping Microsoft software in favor of free Linux by - ProVideo Coalition - December 31st, 2025 [December 31st, 2025]
- TurboTax Review: Easy to Use For Most Filers in Tax Year 2025 - CNET - December 31st, 2025 [December 31st, 2025]
- Ekennis Software Service Limited Nearing Breakout Level After Bounce - Dividend Yield Trends & Free Tools to Monitor Market Corrections -... - December 31st, 2025 [December 31st, 2025]
- DJI's free software update gives its flagship action camera a massive resolution upgrade and focus peaking - T3 - December 27th, 2025 [December 27th, 2025]
- How Divvy Achieved Explosive Revenue Growth with a Free Software Model - getlatka.com - December 10th, 2025 [December 10th, 2025]
- A teenager redrew the Alabama voting map and its now state law - The Guardian - December 2nd, 2025 [December 2nd, 2025]
- The new Debian Libre Live is all about free software, but I need my proprietary apps - ZDNET - December 2nd, 2025 [December 2nd, 2025]
- Full Bucket Music FB-02, free Synthesizer plugin is a Yamaha FB-01 FM synth emulation and editor - synth anatomy - December 2nd, 2025 [December 2nd, 2025]
- We've tested the best antivirus software to protect your computer and these are the 6 we recommend - Tom's Guide - November 28th, 2025 [November 28th, 2025]
- Chrystalleni Loizidou on meaningful participation in a free/libre technology funding programme - Association for Progressive Communications - November 28th, 2025 [November 28th, 2025]
- Why open source isnt free (and never was) - How-To Geek - November 18th, 2025 [November 18th, 2025]
- Affinity by Canva review: free is the magic number - Creative Bloq - November 18th, 2025 [November 18th, 2025]
- Trump administration ended free tax filing program. Heres where Oregonians can go instead - Oregon Capital Chronicle - November 18th, 2025 [November 18th, 2025]
- A lot of free PC software is risky. Use these alternatives instead - PCWorld - November 5th, 2025 [November 5th, 2025]
- Mega recall in the U.S. is official. - Toyota confirms free ECU software update for cameras not displaying image when reverse gear is engaged - Unin... - November 5th, 2025 [November 5th, 2025]
- Is Affinity's free Photoshop rival too good to be true? - Creative Bloq - November 3rd, 2025 [November 3rd, 2025]
- New features are coming to Pikmin 4! - Nintendo - November 3rd, 2025 [November 3rd, 2025]
- Avoid Purging Thousands of Emails With This Gmail Trick to Free Up Space - CNET - November 3rd, 2025 [November 3rd, 2025]
- 3,000+ YouTube videos deliver malware disguised as free software - Kurt the CyberGuy - October 31st, 2025 [October 31st, 2025]
- Affinity, the new version of the creative software, is now free of charge - PrintIndustry.news - October 31st, 2025 [October 31st, 2025]
- Affinity's creative software is free for everyone now - and I think that could be bad news for Adobe - TechRadar - October 31st, 2025 [October 31st, 2025]