Session Hijacking

2026-07-2112 minInfobloxhigh

An adversary-in-the-middle (AiTM) phishing campaign is targeting global institutions including EU and UN agencies using procurement-themed lures sent from compromised organizational email accounts. The actor rotates between multiple AiTM phishing kits (EvilProxy, FlowerStorm/Storm-1167, Kali365) and uses aged, likely compromised domains injected with PHP to host fake document download portals. By proxying authentication flows in real time, the attacker captures session tokens and cookies after MFA completion, bypassing identity controls and inheriting the victim's authenticated session.

2026-07-019 minHuntresshigh

The article details two evolving social engineering techniques: ClickFix, which tricks users into pasting and executing attacker-supplied PowerShell commands via fake prompts, and ConsentFix, which abuses Microsoft 365 OAuth consent flows by manipulating users into dragging a localhost callback link into the browser to capture session tokens. A complete ConsentFix playbook with working code was publicly shared on a Russian cybercrime forum, enabling widespread adoption. Both techniques bypass traditional security controls by exploiting user muscle memory and legitimate platform infrastructure.

2026-07-019 minAkamaimedium

The upcoming MCP 2026-07-28 specification fundamentally reshapes the protocol's security model by moving to a stateless architecture, eliminating protocol-managed sessions, and mandating OAuth 2.1 with PKCE. While this removes historical attack vectors like session hijacking and unsolicited server prompts, it introduces new risks: client-controlled state objects and tracking IDs enable cross-agent workflow hijacking, the _meta object allows metadata-based privilege escalation, new HTTP headers create desync and data leakage opportunities, MCP Apps bring stored XSS into AI interfaces, and asynchronous tasks introduce resource exhaustion DoS vectors. Security responsibility now rests squarely on MCP server developers and platform operators to implement cryptographic state verification, input validation, output encoding, and resource quotas.

Cybercriminals are abusing the 'application wallpapers' feature of Wallpaper Engine on Steam Workshop to distribute malware, including DarkKomet, Lumma, and Vidar. The malicious wallpapers drop backdoors and patched system libraries to hijack active Steam sessions, primarily targeting gamers in China and Russia.

2026-06-114 minZscaler ThreatLabzhigh

The Zscaler ThreatLabz 2026 Phishing and Initial Access Report highlights a shift from high-volume phishing to highly targeted campaigns leveraging AI site builders and encrypted channels. Attackers are increasingly utilizing AiTM and BiTM techniques to bypass MFA, while conducting massive reconnaissance via cloud infrastructure to identify exposed entry points.

2026-05-266 minHuntresshigh

Cybercriminals are shifting from traditional credential theft to session hijacking using infostealer malware, allowing them to bypass multi-factor authentication (MFA). By harvesting and replaying valid session tokens using automated tools, attackers gain rapid, stealthy access to corporate environments, which is then often monetized by Initial Access Brokers.

2026-05-1313 minSockethigh

A coordinated campaign of 108 malicious Chrome extensions has been discovered stealing Telegram sessions, harvesting Google OAuth identities, and deploying universal backdoors. Operating as a Malware-as-a-Service platform via shared C2 infrastructure, the extensions bypass security headers and inject arbitrary content while masquerading as legitimate tools and games.

2026-05-135 minANY.RUNhigh

German critical industries are facing coordinated, highly targeted phishing campaigns utilizing Phishing-as-a-Service platforms like EvilProxy and FlowerStorm. These attacks leverage Adversary-in-the-Middle (AitM) techniques to intercept session cookies, effectively bypassing traditional Multi-Factor Authentication (MFA) to compromise Microsoft 365 and Okta accounts.

2026-05-134 minSocketcritical

The lead maintainer of the widely used Axios npm package fell victim to a sophisticated social engineering attack. Attackers tricked the maintainer into installing a Remote Access Trojan (RAT) during a fake MS Teams meeting, enabling session hijacking that bypassed 2FA and allowed the unauthorized publication of malicious Axios versions to the npm registry.

2026-05-135 minVaronishigh

Storm is a new Windows-based infostealer that evades endpoint detection by offloading browser credential decryption to attacker-controlled servers. It features an automated session hijacking capability that restores stolen cookies via SOCKS5 proxies, granting attackers immediate authenticated access to enterprise SaaS and cloud environments while bypassing MFA.

2026-05-134 minWithSecurehigh

The cybercrime-as-a-service ecosystem is evolving rapidly, characterized by a shift towards trading live session tokens, the integration of generative AI for dynamic payload generation, and a preference for data exfiltration over encryption. Defenders must adapt by prioritizing identity monitoring, rapid session revocation, and recognizing the blurring lines between commodity cybercrime and state-aligned operations.

AI Rush Opens New Attack Paths as Trusted Cloud Services Fuel Phishing The rush to adopt artificial intelligence is giving attackers two new advantages: convincing lures to trick users and poorly secured infrastructure to exploit. This week, multiple campaigns used fake websites for the Claude AI assistant to infect victims with password-stealing malware, while researchers revealed that commercial robots and AI connection protocols contain critical flaws that let hackers hijack them. Because organizations are deploying AI tools faster than they can secure them, attackers are finding easy entry points into corporate networks. In parallel, phishing campaigns are increasingly hijacking trusted cloud services like Amazon's email platform and Vercel's AI-powered website builder to send messages that bypass security filters entirely. A massive campaign targeting US employees used fake HR reviews to steal login sessions even when multi-factor authentication was enabled, and the breach of the Canvas learning platform exposed data on 275 million people that can now be used for highly convincing follow-up scams. These trends together suggest that traditional defenses are losing effectiveness because attackers are hiding inside the systems we already trust. Organizations should immediately patch the actively exploited Palo Alto Networks and Ivanti vulnerabilities flagged by CISA this week, require phishing-resistant authentication methods, and treat every AI tool and robot connected to their network as a high-risk device that needs strict monitoring.

AI Weaponization and Developer Supply Chain Attacks Redefine the Perimeter Attackers are aggressively targeting the software development process because compromising a single developer tool can unlock thousands of corporate networks. In parallel, artificial intelligence is collapsing the cost of attacks, allowing criminals to build convincing deepfakes and automated phishing campaigns in minutes. As a result, traditional security like multi-factor authentication is increasingly bypassed using tricks that steal active login sessions rather than passwords. These trends together suggest that relying on perimeter defenses and basic hygiene is no longer enough, as attackers hide inside trusted cloud services and legitimate software updates. This matters because organizations are losing visibility into where their sensitive data actually lives, especially as AI tools create hidden pathways into company systems. Defenders must shift their focus to monitoring user behavior after login and securing the automated systems that build their software. Watch for unusual activity in your developer tools and implement stricter checks on third-party software.