• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
CybersecurityTech

Anthropic caused panic that Mythos will expose cybersecurity weak spots, but one industry veteran says the real problem is fixing, not finding, them

Marco Quiroz-Gutierrez
By
Marco Quiroz-Gutierrez
Marco Quiroz-Gutierrez
Reporter
Down Arrow Button Icon
Marco Quiroz-Gutierrez
By
Marco Quiroz-Gutierrez
Marco Quiroz-Gutierrez
Reporter
Down Arrow Button Icon
April 13, 2026, 3:04 PM ET
Dario Amodei, cofounder and CEO of Anthropic
Dario Amodei, cofounder and CEO of AnthropicSamyukta Lakshmi—Bloomberg/Getty Images

Anthropic caused an industrywide panic last week when it announced Claude Mythos Preview, an AI model with a knack for uncovering high-level cybersecurity vulnerabilities.

Recommended Video

Among its achievements, the model found a now-patched weak spot in OpenBSD, an operating system known for its security, that Anthropic claimed went undiscovered for 27 years. 

It has also found “thousands of additional high- and critical-severity vulnerabilities” across open-source and closed-source programs, according to the company.

Tech insiders and other experts subsequently freaked out over the potential for the large language model to upend cybersecurity, but one 25-year industry veteran is skeptical.

David Lindner, chief information security officer at Contrast Security, told Fortune that while Mythos may help find myriad problems, this isn’t necessarily the most important issue. 

“We’ve never had a problem finding vulnerabilities. We find them every day. We actually have a pile of them that we just don’t fix,” he said. “So I don’t think that really changes anything.”

Lindner pointed out that weak spots are easier to find than to fix, noting that Anthropic’s blog post announcing Mythos stated over 99% of the vulnerabilities the model uncovered haven’t been patched.

More specifically, he said, Mythos does little to help solve one of the biggest issues facing cybersecurity experts: social engineering. Hackers can still use existing tools and AI to impersonate an employee’s boss or an IT worker and gain access to systems, he argued.

Anthropic has said Mythos is so powerful it won’t be publicly released, and it is being made available only to a group of 40 organizations including tech companies such as Microsoft, Apple, and Google, as well as others like cybersecurity company CrowdStrike and bank JPMorgan Chase so they can use the technology to improve their own security infrastructure through an effort it called Project Glasswing.

Because so many people have access to the model, Lindner also predicted it won’t be kept a secret for long.

“Even if they, quote unquote, don’t release it, China will have a version in five or six months, and there’ll be an open-source version within a year or two,” he said.

Incidentally, Fortune was the first to report on the development of Mythos, thanks to a security lapse in which the company left details about the large language model in a publicly accessible database. 

Meanwhile, venture capitalist Marc Andreessen has raised questions about whether Anthropic is really holding back the release of Mythos because of security concerns or because it lacks the compute to support a general rollout. Anthropic has faced frequent outages recently and has limited users’ computing supply during peak times, the Wall Street Journal reported this weekend. 

Still, other cybersecurity experts remain vigilant about Mythos and its potential to reshape cybersecurity. Zach Lewis, the chief information officer and chief information security officer at the University of Health Sciences and Pharmacy in St. Louis, told Fortune he is worried Mythos will make it that much easier for bad actors, even those with little coding experience, to exploit systems. 

“Threat actors don’t even need to know about—they don’t need to have a background in—coding or software design to understand how these systems work. They can deploy an agent that can do it for them,” he said. 

Part of the solution for organizations may lie in doubling down on the strategies that are already foiling hundreds if not thousands of exploit attempts per day, according to Lewis.

This includes patching existing vulnerabilities and making sure that the permissions employees have are strictly limited so they can’t be exploited. 

“You’ve got to get that stuff locked down,” he said.

In 2001, Fortune first convened “The Smartest People We Know,” bringing together CEOs and founders, builders and investors, thinkers and doers. Since then, Fortune Brainstorm Tech has been the place where bold ideas collide. From June 8–10, we will return to Aspen—where it all began—to mark 25 years of Brainstorm. Register now.
About the Author
Marco Quiroz-Gutierrez
By Marco Quiroz-GutierrezReporter
LinkedIn iconTwitter icon

Role: Reporter
Marco Quiroz-Gutierrez is a reporter for Fortune covering general business news.

See full bioRight Arrow Button Icon

Latest in Cybersecurity

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Cybersecurity

dario
CommentaryAnthropic
Anthropic’s most powerful AI model just exposed a crisis in corporate governance. Here’s the framework every CEO needs.
By Jeffrey Sonnenfeld, Stephen Henriques, Dan Kent and Holden LeeMay 2, 2026
2 days ago
Apple CEO Tim Cook in Washington, D.C. on December 10, 2025. (Tom Williams/CQ-Roll Call/Getty Images)
NewslettersFortune Tech
Tim Cook’s advice for Apple’s next CEO
By Andrew NuscaMay 1, 2026
3 days ago
Meta's Hyperion data-center site in Northeastern Louisiana.
NewslettersEye on AI
Big Tech will spend nearly $700 billion on AI this year. No one knows where the buildout ends
By Sharon GoldmanApril 30, 2026
4 days ago
Jamie Dimon, chief executive officer of JPMorgan Chase & Co., at the Norges Bank Investment Management annual investment conference in Oslo, Norway, on Tuesday, April 28, 2026.
EconomyJamie Dimon
For years, the risk Jamie Dimon was most concerned about was geopolitics. His answer has shifted
By Eleanor PringleApril 30, 2026
4 days ago
Photo of a Disneyland sign
CybersecurityDisney
Disneyland implements facial recognition to keep the lines moving, but guests say they didn’t know it was optional
By Catherina GioinoApril 28, 2026
5 days ago
Ferguson points
CybersecurityScams
Americans lost $2.1 billion to social media scams last year, 8 times more than in 2020. Facebook alone cost users more than texts and emails combined
By Jacqueline MunisApril 28, 2026
6 days ago

Most Popular

America got rich and got sad. A top economist says 2020 broke something that hasn't healed
Economy
America got rich and got sad. A top economist says 2020 broke something that hasn't healed
By Nick LichtenbergMay 3, 2026
20 hours ago
Scott Bessent on financial literacy: 'it drives me crazy' to see young men in blue-collar construction jobs playing the lottery
Personal Finance
Scott Bessent on financial literacy: 'it drives me crazy' to see young men in blue-collar construction jobs playing the lottery
By Fatima Hussein and The Associated PressMay 1, 2026
3 days ago
Sam Altman says the quiet part out loud, confirming some companies are ‘AI washing’ by blaming unrelated layoffs on the technology
AI
Sam Altman says the quiet part out loud, confirming some companies are ‘AI washing’ by blaming unrelated layoffs on the technology
By Sasha RogelbergMay 3, 2026
19 hours ago
Diary of a CEO founder says he hired someone with 'zero' work experience because she 'thanked the security guard by name' before the interview
Success
Diary of a CEO founder says he hired someone with 'zero' work experience because she 'thanked the security guard by name' before the interview
By Emma BurleighMay 3, 2026
19 hours ago
I spent a decade selling homes to the ultra-wealthy. What I saw explains the housing market's nepo problem
Commentary
I spent a decade selling homes to the ultra-wealthy. What I saw explains the housing market's nepo problem
By Blake O'ShaughnessyMay 3, 2026
20 hours ago
Gen Z is rebelling against the economy with ‘disillusionomics,’ tackling near 6-figure debt by turning life into a giant list of income streams
Economy
Gen Z is rebelling against the economy with ‘disillusionomics,’ tackling near 6-figure debt by turning life into a giant list of income streams
By Jacqueline MunisMay 2, 2026
2 days ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.