Microsoft has disclosed and silently remediated three critical information-disclosure vulnerabilities in Microsoft 365 Copilot and Copilot Chat in Microsoft Edge. The flaws—CVE-2026-26129, CVE-2026-26164, and CVE-2026-33111—were published on May 7, 2026, and Microsoft reports that mitigations were deployed on the cloud side so that no customer action or patch installation is required. While that immediate remediation reduces near-term risk, the underlying
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How Mozilla Used Mythos to Find 271 Firefox Vulnerabilities — and What It Means
Mozilla says it used Anthropic’s Mythos model, together with a custom agent harness, to uncover 271 security issues in Firefox over roughly two months. The disclosure, supported by a small set of public Bugzilla reports, highlights a workflow that pairs large language models with deterministic tooling and verification to reduce hallucinations and produce actionable test cases — but it has
Vault Enterprise 2.0: Rethinking LDAP Secrets Management for Enterprise Identity
For security and ops teams, directory credentials have long been a stubborn source of friction: static LDAP passwords, brittle rotation processes, and the need for high‑privilege service accounts create risk and operational toil. Vault Enterprise 2.0 reframes that problem by bringing LDAP static roles into a centralized rotation manager and adding new flows that make onboarding, rotation, and migration safer,
Critical Palo Alto Firewall Flaw: CVE-2026-0300 Exploited to Gain Root Access
Palo Alto Networks has disclosed a critical buffer overflow vulnerability in PAN-OS that is already being exploited in the wild. The flaw, tracked as CVE-2026-0300, can allow unauthenticated attackers to run arbitrary code with full root privileges on affected PA-Series and VM-Series firewalls when the User-ID™ Authentication Portal (captive portal) is exposed to untrusted networks. Given the ease of exploitation
Copy Fail (CVE-2026-31431): A 4‑Byte Kernel Bug That Lets Attackers Gain Root on Major Linux Distros
Microsoft Defender Security Research recently disclosed CVE-2026-31431—nicknamed “Copy Fail”—a high‑severity local privilege escalation in the Linux kernel’s crypto subsystem that enables an unprivileged user to escalate to root. The vulnerability affects kernels released since 2017 and has broad implications for cloud and container environments because the exploit can corrupt in-memory representations of readable files (including setuid binaries) without changing the
Email threat landscape: Q1 2026 trends and insights
During the first quarter of 2026, email-based threats remained pervasive and dynamic. Microsoft Threat Intelligence recorded roughly 8.3 billion phishing messages across January–March, with monthly volumes edging down from about 2.9 billion in January to 2.6 billion in March. While total volume showed only slight decline, the quarter revealed important shifts in delivery mechanisms and attacker behavior: link-based attacks dominated,