Security | Threat Detection | Cyberattacks | DevSecOps | Compliance

An initial access broker for ransomware gangs is targeting organizations with voice phishing (vishing) attacks through Microsoft Teams, according to researchers at Zscaler’s ThreatLabz. “From January through June 2026, ThreatLabz examined a cluster of related campaigns that used Microsoft Teams vishing and Quick Assist for initial access, followed by PowerShell-based staging,” the researchers write.

As a CISO advisor, I am observing a familiar pattern gaining a new, critical dimension. What we historically identified as "Shadow IT", the use of unapproved SaaS and tools, is rapidly evolving into "Shadow AI." Employees are increasingly leveraging AI bots for drafting, analysis, code generation and strategic decision-making.

Zero-Shot Learning is a podcast about how AI gets built, secured, and deployed. Hosted by Nancy Wang, 1Password CTO, and Dev Tagare, Senior Director of Engineering at Google, it’s a builder’s view of the architecture and the complex decisions it takes to ship with AI. This episode features guest co-host Richard Liu, Head of API Products at Anthropic, who sits in for Dev.

Let’s catch up on the more interesting vulnerability disclosures and cyber security news gathered from articles across the web this week. This is what we have been reading about on our coffee break! A very curious breach – the question what did they do?

A JWT authentication bypass and a remote code execution vulnerability in Microsoft SharePoint, chained together, give an attacker full control of a vulnerable server with zero credentials. Tracked as CVE-2026-55040 and CVE-2026-63520, the pair was discovered and weaponized by Rapid7 Labs. The goal was to test whether an AI agent, guided by human researchers, could find and weaponize a real exploit chain. It could.

Netwrix's 2026 research found a 4x gap in breach rates between organizations where AI has significantly grown their identity count and those where it hasn't. Static credentials are AI’s easiest way in: passwords, keys, and tokens that never expire and never get checked. AI didn't invent the over-privileged credential, it just found the fastest way to use one.

AI agent security is an identity problem, but it often starts as a secrets and credential problem. Do your AI agents operate using static API keys, tokens, and other reusable credentials? They might bypass traditional identity controls, creating a governance blind spot.

For years, many business email compromise (BEC) investigations have followed a familiar playbook: an attacker phishes credentials, logs into the victim's mailbox, establishes persistence with inbox rules, monitors communications, and waits for an opportunity to steal money or sensitive information. Today, we're seeing something different at LevelBlue. Across multiple recent investigations, we've observed attackers treating a compromised mailbox as just the first step.

The OWASP GenAI Security Project published the 2026 edition of its Top 10 for LLM Applications. Prompt Injection stayed at number one. Sensitive Information Disclosure stayed at number two. Read the headlines and you would conclude that not much moved. Something did move, and it is not in the rankings. The project leads open by telling you to stop trying to build a model that cannot be fooled, and to build the system around it so that when the model is fooled, nothing important breaks.

An AI compliance audit is less mysterious than its absence from most planning suggests. Someone outside the organization reads what you wrote down, then samples real systems to test whether the organization does what the documents describe. The distance between those two things is where findings come from. ‍ Three different exercises get called an AI audit, and they run differently. Certification against a management standard follows a defined two-stage process.