For decades, cybersecurity strategies have focused on building higher walls—hardening networks, fixing vulnerabilities, and stopping threats before they gain entry.

But that model is starting to break down.Today’s attackers often don’t need to bypass defenses at all—they’re getting in through the front door.

Ontinue’s latest 2H 2025 Threat Intelligence Report finds a consistent pattern across thousands of cases: attackers are logging in, not breaking in.

The Quiet Shift That Changes Everything

According to the report, the most dangerous attacks don’t look like attacks at all. There’s no exploit chain, no obvious malware beaconing, and no alarms triggered by perimeter defenses. Instead, what organizations see is something far more ordinary—a login. A valid username, a legitimate session token, a normal API call. From the system’s perspective, everything appears exactly as it should.

This shift toward identity-based attacks is quietly redefining the cybersecurity landscape.

Cyberattacks are now increasingly centered on identity abuse, where stolen credentials serve as the primary entry point for attackers. Rather than forcing their way into networks, threat actors are using legitimate access to move undetected, escalate privileges, and carry out attacks from within. The growing number of ransomware incidents is a clear indicator of just how effective this approach has become.

The Industrialization of Credential Theft

Credential theft is no longer opportunistic—it’s industrialized.

Stolen login data is harvested through sophisticated infostealers, then packaged and sold in underground marketplaces as ready-to-use access points into corporate systems. This organized ecosystem allows cybercriminals to bypass traditional defenses entirely, purchasing their way into networks instead of hacking their way in.

The result is a growing supply chain of compromised identities that fuels a wide range of cyberattacks.

Ransomware Becoming More Aggressive and Complex

Ransomware remains one of the primary beneficiaries of stolen credentials. Thousands of incidents have been tracked through 2025, driven in large part by identity-based access.

While overall ransom payments have declined slightly, this does not signal reduced risk. Instead, attackers have adapted. They are now targeting a higher volume of smaller organizations, demanding lower payments while increasing the frequency of attacks.

At the same time, ransomware tactics have become more aggressive and complex. What was once a single-layer attack—encrypting data for ransom—has evolved into a multi-layered extortion model. Today’s attackers may steal sensitive data, threaten to leak it, disrupt operations, and even destroy systems. Even organizations that refuse to pay often face significant downtime, regulatory exposure, and long recovery cycles.

AI Is Lowering the Barrier to Entry

Artificial intelligence is further accelerating this trend.

Ontinue researchers reported “the first meaningful signs of LLM-assisted malware development in 2H 2025,” signaling a shift in how attacks are created and deployed. Threat actors are using large language models to generate malware components and enhance phishing campaigns, making attacks more scalable and accessible—even to less technically skilled adversaries.

While AI-driven attacks are still evolving, the trajectory is clear: faster development, more convincing social engineering, and a broader pool of capable attackers.

Supply Chain and SaaS Attacks on the Rise

Stolen credentials are also driving a surge in supply chain and software-as-a-service (SaaS) attacks.

By compromising trusted accounts, attackers can infiltrate interconnected systems and exploit the relationships between vendors, platforms, and users. These attacks are particularly dangerous because they leverage trust as a vulnerability, allowing threat actors to scale their impact across multiple organizations simultaneously.

A More Volatile Global Threat Landscape

At the same time, geopolitical tensions are expanding and intensifying cyber risk.

Nation-state actors, politically motivated groups, and financially driven cybercriminals are increasingly overlapping in tactics and targets. Attacks are no longer limited to government entities—they now frequently impact private companies and civilian infrastructure. In some cases, attackers are adopting more destructive, “scorched earth” approaches, causing damage even when financial gain is limited.

This convergence of motivations is making the threat landscape more unpredictable—and more dangerous.

Identity Is the New Perimeter

The common thread across all of these trends is identity. 

Because organizations cannot fully prevent credential theft, especially in the face of sophisticated social engineering, cybersecurity strategies must evolve. The focus can no longer be solely on keeping attackers out. Instead, it must shift to detecting and stopping the misuse of legitimate access.

That means continuously monitoring identity behavior, identifying anomalies in real time, and applying adaptive, context-aware controls to every login and access request.

The organizations that will succeed in this new environment won’t necessarily be those with the strongest perimeters. They will be the ones that rethink security around identity—and recognizing a critical truth:

The most dangerous threat isn’t unauthorized access. It’s authorized access in the wrong hands.