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Introduction: A Dangerous Shift in the Ransomware Economy
The ransomware ecosystem is undergoing a major transformation. For years, organizations viewed ransomware attacks as isolated incidents: systems were encrypted, negotiations took place, recovery efforts followed, and eventually operations resumed. However, new intelligence from Bitdefender’s latest Threat Debrief reveals a more troubling reality.
Cybercriminal groups are no longer simply competing for victims. Instead, many of the most active ransomware gangs appear to be repeatedly targeting organizations that have already suffered previous attacks. This trend suggests the emergence of a highly interconnected underground economy where access, credentials, stolen data, and attack infrastructure are traded across criminal marketplaces.
During May 2026 alone, researchers recorded 714 claimed ransomware victims. While ransomware claims posted on leak sites cannot always be independently verified, the patterns observed across multiple threat groups paint a clear picture of an increasingly sophisticated cybercrime ecosystem.
A Growing Trend of Shared Victims Across Major Ransomware Groups
One of the most notable discoveries in the latest ransomware analysis involves repeated victimization.
Researchers identified several cases where organizations previously claimed by one ransomware operation later appeared on the leak sites of entirely different groups. Prominent ransomware brands including Qilin, The Gentlemen, DragonForce, and Coinbase Cartel were all linked to overlapping victim lists.
Historically, repeated attacks could be explained by organizations failing to properly secure compromised systems. However, the frequency and scale of these overlaps suggest something more significant.
These are not random cybercriminals opportunistically attacking exposed targets. They are some of the most established ransomware operators currently active on the global threat landscape. Their repeated targeting of the same organizations indicates deeper structural changes occurring within cybercriminal networks.
Affiliate Networks Are Blurring Traditional Boundaries
The ransomware-as-a-service model continues to reshape cybercrime operations.
Under this business structure, ransomware developers create malware platforms while affiliates perform the actual intrusions and extortion campaigns. Affiliates often move between groups or maintain relationships with multiple ransomware operations simultaneously.
This creates situations where access to compromised environments follows individual affiliates rather than remaining exclusive to a specific ransomware brand.
The connection becomes even clearer when examining recent partnerships. The Gentlemen previously operated as a Qilin affiliate. DragonForce publicly announced cooperation with Qilin. Meanwhile, Coinbase Cartel has positioned itself as a facilitator for data theft operations and underground market expansion.
These relationships create an environment where intelligence, tools, and victim access can move fluidly between organizations that outwardly appear to be competitors.
The Rise of Criminal Supply Chains
Affiliate overlap only explains part of the story.
A more comprehensive explanation involves the rapid commoditization of cybercrime resources.
Today’s underground marketplaces function much like legitimate commercial ecosystems. Access brokers sell network access. Credential marketplaces offer stolen usernames and passwords. Malware developers provide ready-made attack tools. Data repositories distribute compromised information to multiple buyers.
As a result, different ransomware groups often purchase identical datasets, credentials, and access mechanisms.
Instead of conducting expensive reconnaissance and intrusion campaigns themselves, threat actors can simply buy access from specialized suppliers.
This industrialization of cybercrime has dramatically lowered the barrier to entry while simultaneously increasing attack volume worldwide.
Infostealers Have Become the Foundation of Modern Ransomware
Perhaps the most alarming aspect of this trend is the growing role of infostealer malware.
Infostealers are designed to harvest sensitive information directly from infected systems. This includes:
Stolen Credentials
Attackers collect usernames, passwords, VPN credentials, and authentication data from compromised devices.
Browser Sessions
Session cookies and authentication tokens allow attackers to bypass traditional login processes and sometimes circumvent multifactor authentication protections.
Corporate Secrets
Stored browser information often contains access to cloud services, developer platforms, intellectual property repositories, and internal business systems.
Financial Information
Sensitive financial records and account details remain highly valuable commodities within underground markets.
Once collected, this data is frequently sold multiple times across criminal marketplaces. Consequently, a single compromise can generate value for numerous threat actors simultaneously.
Why Ransomware Groups Prefer Buying Access
Purchasing access provides significant operational advantages.
Threat actors can avoid costly investments in exploit research, vulnerability discovery, and custom malware development. Instead, they can focus almost exclusively on extortion activities.
This strategy provides several benefits:
Lower Costs
Buying credentials and access is significantly cheaper than developing sophisticated intrusion capabilities.
Faster Operations
Attackers can immediately begin ransomware deployment without lengthy reconnaissance efforts.
Increased Scalability
Criminal organizations can attack more victims simultaneously.
Attribution Challenges
Investigators face greater difficulty tracing attacks when infrastructure and access pathways are shared among multiple groups.
Despite these advantages, dependence on common suppliers introduces new risks for cybercriminals themselves. If major access brokers or credential marketplaces are disrupted, large segments of the ransomware ecosystem could be affected simultaneously.
The Netherlands Emerges as a New Hotspot
Geographical targeting trends also shifted significantly during May 2026.
Thailand dropped out of the ten most targeted regions, while the Netherlands entered the rankings for the first time in a major way.
Prior to May, the Netherlands averaged fewer than four ransomware victims per month. However, activity surged dramatically as groups such as The Gentlemen and DragonForce claimed responsibility for a substantial portion of attacks affecting Dutch organizations.
This sudden increase demonstrates how rapidly ransomware campaigns can shift focus toward specific countries and regions.
Construction Becomes the Most Targeted Industry
Industry targeting trends experienced a notable change as well.
The construction sector surpassed both manufacturing and technology industries to become the most frequently targeted sector during May.
Several factors likely contributed to this development:
Extensive Supply Chains
Construction companies rely heavily on contractors, subcontractors, suppliers, and logistics providers.
Operational Urgency
Project delays can create significant financial consequences, increasing pressure to restore systems quickly.
Large Data Volumes
Construction firms often manage sensitive engineering plans, contracts, and financial information.
Legacy Technology
Many organizations continue operating older systems that may present attractive attack surfaces.
Additionally, the wholesale sector entered the list of the ten most affected industries, highlighting the widening scope of ransomware operations.
MDR Investigations Reveal Common Attack Patterns
Bitdefender’s Managed Detection and Response teams identified recurring tactics across numerous incidents.
VPN Credential Abuse
Compromised VPN accounts continue to provide attackers with direct access to corporate environments.
Credential Dumping
Threat actors frequently target LSASS, NTDS databases, and LSA secrets to extract additional credentials.
Remote Registry Manipulation
Attackers leverage Windows administrative functions to gather information and move laterally through networks.
SMB-Based Credential Harvesting
File-sharing protocols remain valuable sources of authentication data.
Persistence Mechanisms
Scheduled tasks, unauthorized services, and COM hijacking techniques help attackers maintain long-term access.
Browser Credential Theft
Infostealer activity remains one of the most consistent precursors to ransomware deployment.
Multifactor Authentication Is No Longer a Guaranteed Defense
A major concern highlighted by researchers is the increasing theft of authenticated sessions.
Instead of stealing passwords directly, attackers often capture active browser sessions. This approach allows threat actors to effectively inherit legitimate user authentication states.
Because the session is already authenticated, traditional multifactor authentication protections may never be triggered.
Platforms containing valuable intellectual property have become particularly attractive targets. Development environments, cloud management consoles, and code repositories represent rich sources of both sensitive information and privileged access.
Organizations that rely solely on endpoint protection solutions may find themselves inadequately protected against these evolving tactics.
Why Recovery Does Not End the Threat
One of the most important lessons emerging from modern ransomware incidents is that recovery does not necessarily eliminate risk.
Even after systems are restored and operations resume, stolen credentials, authentication tokens, and sensitive data may continue circulating through underground marketplaces.
Months later, another ransomware group may purchase the same access and launch a completely new attack.
This creates a continuous exposure cycle where organizations remain vulnerable long after the initial compromise appears resolved.
Effective defense now requires ongoing monitoring, credential rotation, behavioral analytics, network visibility, cloud security controls, API monitoring, and threat intelligence integration.
Deep Analysis: Linux, Windows and Security Operations Commands
Modern ransomware defense increasingly relies on proactive visibility and threat hunting.
Linux Security Commands
last lastlog who w ss -tulpn netstat -antp lsof -i ps aux journalctl -xe grep "Failed password" /var/log/auth.log find / -perm -4000
Windows Security Commands
Get-EventLog Security Get-LocalUser Get-Process Get-Service Get-ScheduledTask Get-WinEvent net user netstat -ano tasklist
Threat Hunting Focus Areas
Security teams should prioritize:
Credential exposure detection
Session token monitoring
Browser artifact analysis
VPN access auditing
Privileged account reviews
Cloud activity monitoring
Git repository access logging
Dark web credential intelligence
Identity-based anomaly detection
Lateral movement tracking
The growing overlap between ransomware groups suggests the industry is transitioning from isolated criminal gangs toward a collaborative underground marketplace. The future battlefield will increasingly revolve around identity security rather than malware detection alone.
What Undercode Say:
The most important takeaway from this report is not the number of victims.
The real story is the emergence of a mature cybercrime economy.
Traditional ransomware analysis often focuses on malware families and threat actor names.
However, the underground market is becoming more important than the ransomware itself.
Groups no longer need to develop advanced exploits.
They no longer need world-class malware developers.
They do not even need to conduct their own intrusions.
Instead, they can purchase everything.
Access can be bought.
Credentials can be bought.
Session tokens can be bought.
Corporate intelligence can be bought.
Even complete attack infrastructure can be rented.
This dramatically changes the economics of cybercrime.
The underground ecosystem now resembles a cloud service model.
Every participant specializes in a specific role.
Some actors steal credentials.
Some sell access.
Some conduct extortion.
Some operate marketplaces.
Some launder profits.
This specialization increases efficiency.
It also increases resilience.
When one group disappears, another quickly fills the gap.
The overlap between Qilin, DragonForce, The Gentlemen, and Coinbase Cartel is likely not accidental.
It reflects shared infrastructure and shared suppliers.
The growing popularity of infostealers is particularly dangerous.
Many organizations still underestimate browser-based data theft.
Security teams frequently focus on malware execution.
Attackers focus on identity theft.
That difference creates opportunity.
The next generation of ransomware attacks may begin months before encryption occurs.
The initial compromise could happen through a stolen browser cookie.
A session token.
A leaked GitHub credential.
Or a forgotten VPN account.
Organizations must shift from device-centric security toward identity-centric security.
Threat hunting must evolve.
Credential monitoring must become continuous.
Cloud visibility must improve.
Behavioral analytics should become standard.
The era of treating ransomware as a single event is ending.
What we are witnessing is a persistent criminal supply chain where victim organizations become long-term assets repeatedly monetized by multiple threat actors.
That reality makes cyber resilience more important than ever.
✅ Bitdefender reported 714 claimed ransomware victims during May 2026 according to its ransomware leak site monitoring and threat intelligence analysis.
✅ Researchers observed multiple cases where major ransomware groups publicly claimed victims that had previously appeared on another group’s leak site, indicating increasing victim overlap.
✅ Credential theft, infostealer malware, browser session hijacking, and VPN compromise continue to be among the most common precursors to ransomware incidents according to MDR investigation findings.
Prediction
(+1) Identity-focused security platforms will receive significantly greater investment as organizations recognize that stolen credentials fuel most modern ransomware operations.
(+1) Law enforcement agencies will increasingly target access brokers and credential marketplaces because disrupting suppliers can impact multiple ransomware groups simultaneously.
(+1) Browser session protection and token security technologies will become standard enterprise security requirements.
(-1) Victim overlap between ransomware groups is likely to continue increasing as criminal marketplaces expand.
(-1) Construction, manufacturing, and infrastructure sectors will remain high-priority ransomware targets due to operational disruption value.
(-1) Organizations relying solely on endpoint protection products will face greater exposure to credential-driven attacks that bypass traditional malware defenses.
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