Artificial intelligence is no longer just changing how employees write emails, summarize meetings, or analyze data. It is also changing the pace of cybersecurity.
Anthropic’s Claude Mythos Preview has drawn attention for its advanced cybersecurity capabilities. Anthropic says Project Glasswing is using Claude Mythos Preview to help secure critical codebases, and the UK AI Security Institute reported improvement in cyber evaluations, including multi-step cyber-attack simulations.
For business leaders, the takeaway is simple: AI is making the window to find and fix cyber risk smaller.
Cybersecurity Has Always Been Uneven
Cybersecurity has always been an uneven fight.
Threat actors only need one opening. One compromised password. One unpatched system. One employee who clicks the wrong link. One vendor account that was never properly reviewed.
Defenders, on the other hand, have to protect every user, device, system, application, vendor, and access point every day.
That imbalance is not new. What is changing is the speed. AI can help identify weaknesses faster, test ideas faster, and support more complex cyber activity.
Mythos Is a Signal
Mythos should not be viewed as the whole story. It is a signal of where cybersecurity is heading.
AI is moving beyond basic phishing emails and simple automation. It is becoming more capable of helping with vulnerability discovery, infrastructure analysis, and multi-step technical reasoning.
That can help defenders, but it also shows how quickly the threat landscape is changing.
This does not mean every business should panic. It does mean leaders should pay attention. The same type of capability that helps security teams find and fix weaknesses faster could increase pressure on organisations that are slow to patch, monitor, or respond.
Your Vendors Are Part of Your Cybersecurity Readiness
The shrinking window is not limited to your internal systems.
Many businesses rely on outside vendors for software, payroll, accounting, payments, cloud services, operations, and IT support. Each vendor relationship can create another potential access point into your business.
That does not mean vendors are bad. It means vendor risk has to be managed.
If a third-party platform has a vulnerability, a vendor account is over-permissioned, or a partner does not have strong security controls, your organisation may inherit part of that risk. In an AI-accelerated environment, those weak points may be discovered and exploited faster.
This is why vendor oversight, access reviews, MFA, contract requirements, and clear offboarding processes matter. Cyber readiness is no longer just about what happens inside your walls. It is also about the systems and partners connected to your business.
Basic Controls Matter More
Advanced AI does not make cybersecurity fundamentals outdated. It makes them more important.
Businesses should be asking:
Are critical systems patched on time?
Is MFA fully deployed?
Are backups tested and protected?
Are admin privileges limited?
Are vendors evaluated for risk?
Is someone monitoring alerts?
Is there a clear incident response plan?
These are not just technical questions. They are leadership questions.
Readiness Is the Real Advantage
The goal is not to chase every headline or react to every new AI model. The goal is to build a cybersecurity program that can withstand a faster, more complex environment.
That means knowing what matters most, closing obvious gaps, layering controls, reviewing vendor access, and having a response plan before something goes wrong.
Mythos matters because it points to a larger shift. AI is increasing the speed of cyber discovery, and organisations with slow processes, outdated systems, unclear ownership, or weak vendor oversight will feel that pressure first.
At Expera IT, the focus is helping leadership teams understand cyber risk in practical business terms. Strong cybersecurity is not about fear. It is about readiness, clarity, and better decisions before the window gets smaller.
