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Proofpoint Expands AI-Powered Investigations to Microsoft 365 and Deepens Insider Risk Visibility into AI Activity | Proofpoint US Four groups caught using the same Chrome and Windows exploit kit CISOs are feeling the security burden of accelerated AI use Chinese espionage groups swarm to exploit triple-link chain of zero-days Proofpoint 2026 Voice of the CISO Report Finds Cyber Resilience Improving, While AI Expands the CISO Mandate | Proofpoint US Proofpoint SOC Analyst Agent Uses OpenAI Cyber Models Proofpoint Strengthens Executive Leadership Team with Appointment of Chief Legal Officer and Chief People Officer | Proofpoint US Proofpoint Brings OpenAI GPT Cyber Models into Security Operations to Help Defenders Investigate Threats Faster | Proofpoint US Cybercriminals Turn to Indirect Prompt Injection Attacks Fox News Proofpoint Joins Google Unified Security Recommended Program to Help Organizations Defend Against Today’s Most Sophisticated Threats | Proofpoint US Proofpoint Launches OEM Program to Help Security Providers Embed Trusted Threat Intelligence and Detection Capabilities | Proofpoint US Max-severity Exchange server flaw under active exploitation by Kremlin hackers New warnings that Russian operatives are targeting the emails of US nuclear scientists and defense contractors | CNN Politics International alert spotlights Russia-linked attacks on Zimbra webmail US and allies say Russian hackers stole emails without social engineering If you pay a hacker's ransom, chances are that they'll come back for more | TechCrunch Proofpoint Research Finds 65% of Organizations Affected by Ransomware Say AI Made Attacks More Effective | Proofpoint US The Hacker News Hackers find a new trick to collect Microsoft Entra user data without raising red flags Suspected Chinese snoops caught breaking into universities New Cargo Theft Surge: From Lobster Heists To Bourbon Warehouse Scams Proofpoint Joins the OpenAI Daybreak Cyber Partner Program to Advance Responsible AI-Powered Cyber Defense | Proofpoint US OpenAI Lets Cyber Vendors Embed GPT-5.5 in Defenses Suspected North Korean actors use fake ‘coding assignments’ to steal crypto China-Linked TA4922 Expands Phishing Attacks to U.K., Germany, Italy, and South Africa Proofpoint Introduces Active Exploits Protection to Help Organizations Prioritize Vulnerability Patching for Real-World Attacks in the AI Era | Proofpoint US Verizon DBIR: Healthcare Fends Off Increased Social Engineering Attacks Proofpoint Integrates with the Claude Compliance API to Extend Data Security and Governance to Claude | Proofpoint US Proofpoint Launches Dedicated MSP Business Unit and Introduces 365 Total Protection for North America | Proofpoint US
Defending the Authentication Flow: Device Code Phishing w...
The CyberWire Staff · 2026-06-30 · via Proofpoint News Feed

This episode delivers critical battlefield stories regarding the operational reality of modern identity based threats. ⁠Selena Larson⁠, Staff Threat Researcher and Lead, Intelligence Analysis and Strategy at ⁠Proofpoint⁠ and Host of the ⁠DISCARDED⁠ podcast and the ⁠Only Malware in the Building⁠ podcast, joins host ⁠⁠Caleb Tolin⁠ ⁠to detail the specific mechanics of device code phishing campaigns, revealing how adversaries exploit legitimate communication structures to capture administrative and enterprise access. The discussion centers on the rapid commercialization of cybercrime, highlighting the leak of specialized kits in late 2025 that catalyzed the democratization of sophisticated technical exploits.

The conversation unpacks the behavioral patterns of specific threat groups, analyzing the intersection of business email compromise, credential harvesting, and account takeover jumping. Selena explains how opportunistic targeting allows threats to pivot horizontally through trusted external supplier networks and specific industry verticals.

Rather than focusing solely on defensive theory, the dialogue transitions into hard technical controls, challenging the long-term viability of traditional security awareness programs. Defenders are provided with direct architectural recommendations, including the precise deployment of conditional access policies and rigid device compliance frameworks designed to stop unauthorized authentication attempts before execution.

What You'll Learn

  • Core operational mechanics behind the exploitation of Microsoft OAuth authentication workflows.
  • Historical transition from early red team utility testing to commercialized phishing platforms.
  • Impact of leaked cyber criminal source code on the current volume of identity attacks.
  • Analytical methods to distinguish between intentional industry targeting and opportunistic account jumping.
  • Strategic deployment of conditional access policies to terminate unauthorized authentication capabilities.
  • Technical constraints of legacy security awareness training against modern behavioral engineering.
  • Structural integration of strict device compliance validation within identity perimeters.