Credential Theft and Identity-Based Intrusions Surge Across Enterprises
Credential compromise and identity abuse are increasing as attackers rely more on stolen logins, session artifacts, and phishing rather than noisy exploitation alone. Recorded Future reported a sharp rise in exposed credentials during 2025, including nearly 2 billion credentials indexed from malware combo lists, with the second half of the year up 50% over the first and Q4 up 90% over Q1. The trend is being driven by the industrialization of infostealer malware, malware-as-a-service ecosystems, and AI-enabled phishing and social engineering, while weak identity governance continues to expand the attack surface. A separate survey of UK organizations found 77% fail to promptly disable former employees' accounts, 34% grant overly broad access, and many still use manual processes such as spreadsheets for account validation, creating persistent opportunities for unauthorized access.
A targeted phishing attempt against Outpost24 illustrates how these identity-focused attacks are being operationalized against even security vendors. Attackers used a convincing fake JP Morgan email, valid DKIM authentication via Amazon SES infrastructure, and a seven-stage redirect chain leveraging trusted brands including Cisco to steer a C-suite executive toward a Microsoft Office credential-harvesting page while evading email defenses. The broader threat environment shows the same shift toward access abuse and stealthier post-compromise tradecraft: Google Threat Intelligence Group found ransomware actors increasingly favor native Windows tools over Cobalt Strike, with data theft present in 77% of incidents and exploitation of VPNs and firewalls still common for initial access. Together, the reporting shows attackers are increasingly logging in rather than breaking in, then using legitimate access and built-in tools to deepen compromise and extort victims.

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How this story unfolded
11 events from the most recent confirmed update back to the earliest known activity.
Cisco Talos says phishing became top initial-access vector in Q1 2026
Cisco Talos reported that in Q1 2026, 35% of incident-response cases it investigated began with successful phishing, making phishing the leading initial-access vector ahead of exploitation of external vulnerabilities. The report said attackers were increasingly using AI to generate more convincing, multilingual, and personalized phishing lures, while abuse of trusted services and MFA weaknesses also featured prominently.
GitGuardian reports 28.65 million secrets exposed in GitHub commits
GitGuardian's State of Secrets Sprawl 2026 report said 28.65 million new hardcoded secrets were exposed in public GitHub commits during 2025, continuing a multi-year rise in leaked keys, tokens, and passwords. The report also warned that AI development, internal repositories, collaboration platforms, and exposed self-hosted services were expanding credential leakage and slowing remediation.
SpyCloud publishes 2026 Identity Exposure Report
SpyCloud published its 2026 Identity Exposure Report, stating that recaptured identity records rose 23% to 65.7 billion total records and warning of growing exposure involving API keys, session tokens, and machine identities. The report highlighted increasing risks from non-human identities and session theft.
Outpost24 links phishing tooling to Kratos PhaaS kit
After obtaining and examining an encrypted phishing kit and its configuration, Outpost24 researchers linked the operation's tooling to the Kratos phishing-as-a-service kit. They said the activity was consistent with phishing-as-a-service operations but could not attribute it to a specific threat group.
Outpost24 detects seven-stage phishing attack targeting its executive
Outpost24 disclosed that a C-suite executive was targeted in a sophisticated phishing campaign impersonating JP Morgan and using a seven-stage redirect chain through trusted services such as Cisco Secure Web and Nylas. The company said it detected and analyzed the attack before any damage occurred.
SailPoint survey finds widespread UK identity security weaknesses
A SailPoint survey of 333 IT decision-makers found that 77% of UK organizations do not promptly deactivate ex-employee accounts and that credential compromise incidents rose 160% year over year. The survey also found many businesses grant overly broad access and still rely on manual identity management processes.
U.S. and European agencies warn of Russia-linked OT credential intrusions
On 2025-12-10, a joint cybersecurity advisory from U.S. and European agencies warned that Russia-linked hacktivist actors were increasingly targeting critical infrastructure sectors including water, energy, and agriculture by abusing weak, default, reused, and leaked credentials. The advisory highlighted a shift from disruptive scanning and DDoS activity toward credential-based access into OT and ICS environments rather than reliance on advanced malware or software exploits.
Ontinue identifies early signs of LLM-assisted malware development
Ontinue reported what it described as the first meaningful signs of threat actors using large language models to assist malware development during the second half of 2025. The finding was presented alongside broader reporting on identity abuse and phishing enabled by stolen credentials.
SpyCloud records major rise in exposed identities during 2025
SpyCloud's 2026 Identity Exposure Report said that in 2025 it captured 18.1 million exposed API keys and tokens, 8.6 billion stolen cookies and session artifacts, and 642.4 million credentials tied to 13.2 million infostealer infections. The report also found that nearly half of 28.6 million phished identity records were linked to corporate users.
Ransomware actors shift tactics as profits fall in 2025
Google Threat Intelligence Group and Mandiant found that during 2025 the ransomware ecosystem became less profitable, with lower victim payment rates and more frequent data theft and leak-site shaming. Attackers increasingly moved away from tools like Cobalt Strike and Mimikatz toward native Windows utilities, PowerShell, and legitimate admin protocols to evade detection.
Credential theft dominates initial access in 2025
Recorded Future reported that credential theft became a leading initial access vector during 2025, with attackers increasingly using stolen usernames, passwords, tokens, and session cookies instead of exploiting vulnerabilities. The firm observed nearly two billion credentials indexed from malware combo lists and a sharp rise in compromised credentials over the course of the year.
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Vulnerabilities, threat actors, malware, products, organizations, and breaches Mallory has linked to this story.
Sources
11 references tracked. Mallory keeps watching after this page renders.
AI Phishing Is No. 1 With a Bullet for Cyberattackers
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Open sourceYour Next Breach Will Look Like Business as Usual
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Open sourceCyberattacks powered by stolen credentials on the rise | brief | SC Media
scworld.com
Open sourceAI frenzy feeds credential chaos, secrets spread through code, tools, and infrastructure - Help Net Security
helpnetsecurity.com
Open sourceLess Lucrative Ransomware Market Makes Attackers Alter Methods
darkreading.com
Open sourceMore Attackers Are Logging In, Not Breaking In
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Open sourceHackers Target Cybersecurity Firm Outpost24 in 7-Stage Phish
darkreading.com
Open sourceHave I Been Pwned: Synthient Credential Stuffing Threat Data Breach
haveibeenpwned.com
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