Skip to main content
Live Webinar with SANS (June 25)— Agentic CTI Automation for Fun & ProfitRegister Free
Mallory
Back to intelligence
credential-access-methodransomware-group-operationdata-exfiltration-methodinitial-access-method

2025 Threat Landscape Reports Highlight Identity-Based Intrusions and High-Impact Ransomware Losses

Updated 3mo agoFirst seen Feb 19, 20262 sources

Multiple 2025 retrospective threat reports describe identity compromise as the dominant initial access vector, with attackers repeatedly exploiting predictable control gaps such as weak identity security, third-party access paths, and exposed/perimeter systems. Barracuda’s Managed XDR telemetry analysis (spanning trillions of events and hundreds of thousands of alerts) reported that Microsoft 365 anomalous login and “impossible travel” detections were among the most common signals, consistent with credential theft and account takeover activity; it also noted post-compromise behavior including suspicious privilege manipulation (e.g., adding users to high-risk Windows groups). Dataminr’s 2026 Cyber Threat Landscape Report similarly characterized 2025 as a structural shift toward accelerated identity-based intrusions, citing that a significant share of intrusions leveraged valid credentials, alongside growth in infostealer malware and AI-enabled social engineering, and increased exploitation of third-party weaknesses.

The same reporting also emphasizes that while overall ransomware activity may have stabilized in volume, loss severity increased, with “mega-loss” incidents exceeding $100M and in some cases $1B, driven by multi-vector campaigns combining credential theft, data exfiltration, and disruption. Other items in the set are broader commentary rather than incident- or disclosure-driven intelligence: an opinion piece argues that the rapid expansion of AI-driven data center infrastructure raises systemic risk from ransomware, supply-chain compromise, and OT disruption, while a predictions article discusses 2026 security investment themes without tying to a specific campaign. A separate news roundup recaps multiple 2025 events (including third-party/SaaS integration compromises and other vulnerabilities) rather than providing new, single-story reporting, making it only loosely aligned with the identity-and-ransomware trend narrative.

Share:
2025 Threat Landscape Reports Highlight Identity-Based Intrusions and High-Impact Ransomware Losses
Stay ahead

Get ahead of threats like this

Mallory correlates global threat intelligence with your attack surface — know if you’re exposed before adversaries strike.

EVENT TIMELINE

How this story unfolded

2 events from the most recent confirmed update back to the earliest known activity.

2 EVENTS
Dec 31, 20256mo ago

Barracuda telemetry report finds recurring security gaps drove 2025 intrusions

Barracuda's 2025 Managed XDR telemetry report concluded that many successful intrusions in 2025 began with familiar weaknesses such as identity compromise, third-party access, and poorly secured perimeter devices. It reported that supply-chain and third-party access featured in 66% of incidents, ransomware activity rose year over year, and attackers frequently abused legitimate remote access and RMM tools to blend in.

Dataminr report says 2025 marked a structural shift in cyber risk

Dataminr's 2026 Cyber Threat Landscape Report characterized 2025 as a turning point in cyber risk, citing a 225% increase in average monthly threat actor alerts versus 2024, more than 18,000 ransomware alerts, and over 2 million domain impersonation incidents. The report said identity became the primary attack surface, with nearly 30% of intrusions using valid credentials and more systemic multi-vector attacks driving larger losses.

LINKED ENTITIES

Related entities

Vulnerabilities, threat actors, malware, products, organizations, and breaches Mallory has linked to this story.

20 LINKEDOpen in app
Malware
1 linked
Affected products
7 linked
LighttpdPsexecFortigateOpensshAnydeskScreenconnectOpenssh
Organizations
9 linked
DattoBarracuda NetworksFortinetConnectwiseMicrosoft CorporationAnyDesk Software GmbHSonicwallDataminrSiliconANGLE Media
The operational view lives in Mallory

See the full picture, correlated to your attack surface.

This page covers what’s public. Mallory adds the parts that aren’t — which of your assets are affected, which threat actors are using it right now, which detections to deploy, and what to do next.
Exposure mapping

Map indicators from this story to your assets and identify affected systems in minutes.

Threat actor evidence

Every observed campaign, victim, and pivot linked to actors named in this story.

Associated malware

Malware, exploits, and IOCs connected to the activity described here.

Detection signatures

YARA, Sigma, and Snort rules deployed to your SIEM as soon as they’re published.

Scheduled alerts

Get matching new stories delivered to your team as they break — not the next morning.

AI threads

Ask questions about this story and take action on the answers.