--- title: Medical records giant Epic pauses product development to... description: Epic, maker of the widely used MyChart medical records software, has paused most product development for about six weeks to fix security flaws uncovered when... canonical: https://daily.dev/posts/medical-records-giant-epic-pauses-product-development-to-fix-security-bugs-that-risk-patients-data-99jitbhc4 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Medical records giant Epic pauses product development to fix security bugs that risk patients’ data | daily.dev og:description: Epic, maker of the widely used MyChart medical records software, has paused most product development for about six weeks to fix security flaws uncovered when... og:url: https://daily.dev/posts/medical-records-giant-epic-pauses-product-development-to-fix-security-bugs-that-risk-patients-data-99jitbhc4 og:image: https://api.daily.dev/og/posts/99jitbhC4.png og:image:alt: Medical records giant Epic pauses product development to fix security bugs that risk patients’ data og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Medical records giant Epic pauses product development to fix security bugs that risk patients’ data **[TechCrunch](https://daily.dev/sources/tc)** · 3 min read · 1 upvotes · 0 comments ## Summary Epic, maker of the widely used MyChart medical records software, has paused most product development for about six weeks to fix security flaws uncovered when Anthropic's cybersecurity-focused AI model Mythos was deployed against its systems. Epic's CSO said some MyChart customer configurations could let outsiders access patient records without leaving any trace in logs, though it's unclear if records could be altered undetected. MyChart handles over 320 million patient records across US hospitals and clinics. The news follows a wave of major healthcare data breaches this year, including at CareCloud, McKesson, Craneware, and DentaQuest, as well as the 2024 Change Healthcare ransomware attack affecting 192 million people. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### Why did Epic pause development on MyChart? Epic paused most product development for roughly six weeks to fix security bugs discovered after deploying Anthropic's frontier cybersecurity model, Mythos, against its systems. Epic's chief security officer said some customer configurations of MyChart could allow outsiders to access patient records without the intrusion being recorded in software logs, prompting the remediation effort. _Healthcare IT teams weighing AI-driven vulnerability scans can follow security fallout like this on daily.dev._ ### How many patient records does Epic's MyChart software handle? MyChart is used to maintain over 320 million patient records across hospitals and doctor's offices in the United States. Epic states it does not itself have access to customers' medical data, since that responsibility falls on the healthcare providers using the software, though a bug unknown to Epic could still let hackers compromise affected systems and access stored data. _Anyone tracking the scale of healthcare data exposure can follow breach updates on daily.dev._ ## Similar posts on daily.dev - [Google launches Pics, an AI design app to rival Canva](https://daily.dev/posts/google-launches-pics-an-ai-design-app-to-rival-canva-s5cdp8bhv) · The Next Web · 0 upvotes · 0 comments - [Mythos forces South African banks onto high alert](https://daily.dev/posts/mythos-forces-south-african-banks-onto-high-alert-ltypjvgbu) · TechCentral · 0 upvotes · 0 comments - [NHS to close-source GitHub repos over AI, security concerns](https://daily.dev/posts/nhs-to-close-source-github-repos-over-ai-security-concerns-3xv7r1llh) · The Register · 1 upvotes · 0 comments - [Claude Mythos Preview Exposes Hidden Code Flaws Fast](https://daily.dev/posts/claude-mythos-preview-exposes-hidden-code-flaws-fast-wdwyjdo3x) · IEEE Spectrum · 0 upvotes · 0 comments --- Tags: [#security](https://daily.dev/tags/security), [#healthcare](https://daily.dev/tags/healthcare), [#anthropic](https://daily.dev/tags/anthropic), [#data-breach](https://daily.dev/tags/data-breach) [View this post on daily.dev](https://daily.dev/posts/medical-records-giant-epic-pauses-product-development-to-fix-security-bugs-that-risk-patients-data-99jitbhc4) ```json 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