Why Basic Security Gaps Still Drive Cyberattacks in the Age of AI
Artificial intelligence is changing cybersecurity on both sides of the battlefield.
Attackers can increasingly use AI to automate research, identify potential weaknesses, and accelerate parts of the intrusion process. Security teams, meanwhile, are using artificial intelligence and automation to detect suspicious activity and respond more quickly.
Yet recent industry reports point to an important reality: many successful cyberattacks still begin with familiar security weaknesses.
Unpatched software, inadequate authentication controls, exposed systems, and poorly managed accounts continue to provide attackers with opportunities to enter corporate environments.
The difference in the AI era is that attackers may be able to exploit those weaknesses much faster than before.
Software Vulnerabilities Remain a Major Entry Point
Verizon's 2026 Data Breach Investigations Report (DBIR) reported that exploitation of software vulnerabilities accounted for 31% of breaches analyzed from 2025, up from 20% the previous year.
That increase illustrates why vulnerability management remains one of the most important responsibilities for organizations.
A vulnerability may exist in an operating system, application, network device, or other technology used by a business. Once information about how to exploit that weakness becomes publicly available, organizations that have not patched affected systems can face increased exposure.
AI can potentially make the process more efficient for attackers, but the underlying weakness often existed before the AI-assisted attack began.
Mandiant Reports a Similar Pattern
Google Mandiant's M-Trends 2026 report also identified vulnerability exploitation as a leading initial intrusion method.
According to the figures provided in the source material, vulnerability exploitation accounted for 32% of the intrusions investigated by Mandiant, making it the most common initial intrusion method for the sixth consecutive year.
Vishing, or voice-based social engineering, represented 11%.
Email phishing, meanwhile, fell from 14% in 2024 to 6% in 2025 among the intrusions covered by the report.
The changing numbers suggest that attackers are not necessarily abandoning traditional weaknesses. Instead, they are combining familiar techniques with newer approaches to identity theft, social engineering, and authentication abuse.
The Biggest Change May Be Attack Speed
While the basic weaknesses remain familiar, the time available for defenders to respond is becoming shorter.
CrowdStrike has reported a significant reduction in the period between the public disclosure of a vulnerability and its exploitation in real-world attacks.
Historically, organizations might have had several days to react after technical information about a vulnerability became available.
The source material cites CrowdStrike's observation that 88% of attacks during the first half of the year occurred within 48 hours after proof-of-concept code became publicly available.
Some attackers reportedly moved even faster, launching activity within 24 hours of publicly available exploitation information.
This creates a difficult situation for security teams.
A patch that might previously have been considered part of a routine maintenance schedule can become an urgent security requirement when attackers can move from publicly available technical information to exploitation within a very short period.
What Is Proof-of-Concept Code?
Proof-of-concept, commonly abbreviated as PoC, is code or a demonstration showing that a particular vulnerability can be exploited.
Security researchers often publish PoCs to demonstrate the seriousness of a vulnerability and help organizations understand what needs to be fixed.
The same information can also be studied by malicious actors.
This creates a difficult balance in cybersecurity: information intended to improve defensive awareness can also reduce the technical effort required to reproduce an attack.
The important lesson for businesses is that publicly disclosed vulnerabilities should not simply be placed on a long-term patching list.
Organizations need a process for identifying which vulnerabilities affect their systems and determining which require immediate attention.
Once Inside, Attackers Can Move Quickly
The initial intrusion is only one part of a cyberattack.
After gaining access to one system, attackers may attempt to move through a network, compromise additional accounts, access sensitive information, or establish additional ways to maintain access.
CrowdStrike reported that in 2025, cybercriminals took an average of approximately 29 minutes to expand from one compromised system to another.
In the fastest case cited in the source material, the movement occurred in only 27 seconds.
Such figures demonstrate why organizations cannot rely solely on preventing the initial intrusion.
Detection and containment are equally important.
If suspicious activity is identified quickly, security teams may have an opportunity to isolate affected systems before an attacker can significantly expand access.
AI Makes the Fundamentals More Important, Not Less
It may seem that the arrival of sophisticated AI security tools means companies need increasingly sophisticated defenses.
Advanced technology certainly has an important role.
However, an organization with an excellent AI-based security platform can still be exposed if critical software remains unpatched or if employees and administrators use weak authentication practices.
The basic controls form the foundation on which more advanced security technologies operate.
These include:
Applying security patches promptly
Using strong, phishing-resistant multi-factor authentication
Removing unnecessary user accounts
Deleting unused applications and services
Reducing unnecessary internet-facing systems
Monitoring privileged accounts
Limiting user permissions
Maintaining reliable backups
Testing incident-response procedures
Continuously reviewing exposed assets
These measures are not new.
What has changed is the speed at which attackers may be able to take advantage of organizations that neglect them.
Authentication Is Becoming Increasingly Important
Vishing and other forms of social engineering demonstrate that cybersecurity is not exclusively a software problem.
Attackers may attempt to persuade employees to reveal credentials, approve authentication requests, or provide access through telephone conversations and other communication channels.
For this reason, strong authentication is becoming increasingly important.
Multi-factor authentication can add another layer of protection, but organizations should consider phishing-resistant authentication methods where appropriate rather than assuming that every form of MFA provides the same level of protection.
Security policies should also address unnecessary accounts and excessive privileges.
An account that no longer needs access should not remain active simply because nobody remembered to disable it.
Reduce What Attackers Can Reach
Another fundamental principle is minimizing the number of systems exposed directly to the internet.
Every externally accessible service represents a potential point of attack.
Organizations should regularly identify internet-facing assets and determine whether each one is genuinely necessary.
Unused services, outdated applications, and forgotten infrastructure can become security liabilities.
Reducing the external attack surface does not eliminate risk, but it can reduce the number of opportunities attackers have to discover and exploit weaknesses.
Security Teams Also Need to Move Faster
The lesson from the increasing speed of attacks is not simply that companies should patch faster.
Defenders also need efficient monitoring and response capabilities.
Automation can help security teams prioritize alerts, identify unusual behavior, and begin predefined response procedures.
AI may become particularly useful for analyzing large amounts of security data that would be difficult for human analysts to examine manually.
But technology should complement established security processes rather than replace them.
A sophisticated security system cannot compensate for an organization that does not know which systems it owns, which software versions are installed, or which accounts still have access to sensitive resources.
The Human Factor Still Matters
Technology alone cannot eliminate cybersecurity risks.
Employees may accidentally click malicious links, disclose information to an impersonator, or approve a fraudulent request.
Regular security awareness training can therefore remain an important part of an organization's defense strategy.
Training should ideally go beyond simply telling employees not to click suspicious links.
Workers should understand how modern social-engineering attacks operate, including impersonation, urgent requests, fraudulent support calls, and attempts to manipulate authentication procedures.
What Businesses Should Prioritize
The current cybersecurity environment suggests that organizations need both speed and discipline.
A practical security program can begin with several fundamental questions:
1. Are critical vulnerabilities being patched quickly?
Organizations should know which vulnerabilities affect their most important systems and have procedures for prioritizing urgent fixes.
2. Are sensitive accounts properly protected?
Privileged and administrative accounts deserve particularly strong authentication and monitoring.
3. Are unnecessary accounts being removed?
Former employees, unused service accounts, and forgotten credentials can create unnecessary exposure.
4. Which systems are publicly accessible?
Organizations should maintain an accurate inventory of internet-facing assets and regularly review whether that exposure remains necessary.
5. Can an intrusion be detected quickly?
Prevention is important, but organizations should also assume that some attacks may succeed and prepare to identify and contain them.
6. Can the company recover?
Reliable backups and tested recovery procedures can make a major difference when an incident affects critical systems or data.
AI Is Changing the Race, Not the Rules
Artificial intelligence is clearly changing the cybersecurity landscape.
Attackers can use automation and AI-assisted tools to increase productivity, while defenders can use similar technologies to analyze threats and accelerate responses.
But the underlying principles of cybersecurity have not disappeared.
A company that leaves known vulnerabilities unpatched, maintains unnecessary accounts, or exposes systems without adequate protection may remain vulnerable regardless of how advanced its security technology appears.
The difference today is that attackers may have less patience to wait for organizations to correct those weaknesses.
Conclusion
The rise of AI-powered cyberattacks does not mean traditional cybersecurity practices have become obsolete.
In many respects, the opposite may be true.
Recent industry reports indicate that vulnerability exploitation and authentication-related weaknesses remain significant components of modern intrusions. At the same time, the time between vulnerability disclosure and exploitation can be extremely short.
That combination creates a clear challenge for organizations: basic security controls need to be maintained with greater speed and consistency than ever before.
AI can help security teams detect threats, automate repetitive tasks, and respond faster. But advanced technology works best when it is supported by fundamentals such as timely patching, strong authentication, minimal attack surfaces, and effective account management.
In the AI era, the strongest defense may not simply be having the newest security technology. It is making sure that the basic protections already available are actually being used effectively.
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