CISA warns that threat actors are exploiting CVE-2026-104935, a zero-day authentication bypass by spoofing in Ivanti Connect Secure that allows remote, unauthenticated execution of arbitrary commands. The activity is being used for credential theft and data exfiltration. On Oct. 13, 2026, CISA added it to its Known Exploited Vulnerabiliti…
Unit 42 reports a campaign, tracked as CL-UNK-1211, that targeted government entities and state-affiliated infrastructure between October 2025 and April 2026. The cluster has not been attributed to a nation-state or to cybercrime. The attackers focused on Linux servers for reconnaissance, persistence and intelligence collection, including…
Cisco Talos disclosed an APT spear-phishing and quishing campaign, tracked as UAT-11985, that targets individuals affiliated with Taiwan research organizations. First seen in mid-2026, it uses fake event invitations to lead victims to an adversary-in-the-middle (AitM) phishing framework that harvests Google account credentials and MFA cod…
The LiteLLM release 1.107.0 (a widely used open source LLM proxy) was trojanized on PyPI on 21 October 2026 and carries a credential stealer plus a remote code execution backdoor. All seven wheels (Linux, macOS, Windows) drop three extra files in site-packages, two of which run whenever any Python process starts, even one that never impor…
This SentinelOne weekly roundup (Week 41, 2026) covers law enforcement actions, a phishing campaign and an actively exploited vulnerability. The most urgent item is CVE-2026-21589, a critical (CVSS 9.3) unauthenticated arbitrary file access flaw in Atlassian Data Center products. Exploitation attempts began about two hours after a public …