The PHP security team released emergency fixes on October 21, 2026 at 14:00 UTC for two critical core flaws, CVE-2026-109618 and CVE-2026-109619, nicknamed PHP2Shell. Both are rated CVSS v4.0 9.2 and allow unauthenticated remote code execution (RCE) as the web worker account. They can also expose process memory that may hold credentials a…
This SentinelOne / SentinelLABS blog post (Part 2 of the "LLMs in the SOC" series) argues that security agents should be designed so their performance is measurable from the start, rather than treating evaluation as an afterthought following a proof-of-concept. It is a methodology piece, not a threat report: no incident, vulnerability, or…
This SentinelOne weekly roundup (Week 39, 2026) covers one law enforcement success and two active threat campaigns. A US court sentenced Armenian national Karen Serobovich Vardanyan ("Maneeken"/"Karl Lagerfeld"), an initial access specialist for Ryuk ransomware, to two years in prison and over $1.2 million in restitution. SentinelLABS ide…
This SentinelOne weekly roundup covers law enforcement wins and two major breaches. A federal court sentenced former U.S. Army soldier Cameron John Wagenius to 70 months for attacks on technology and telecom firms, and former U.S. Air Force members Chijioke Timothy Odimegwu and Harafat Mogaji received a combined 189 months for business em…
This SentinelOne weekly roundup covers three developments. The FBI arrested Edward Dubrovsky, a former CYPFER executive, on conspiracy and extortion charges. Kash Patel described him as a suspected co-conspirator of ShinyHunters, though he has not been officially named as one. The FBI says the group breached more than 140 organizations an…
SentinelOne analysis argues that bring your own vulnerable driver (BYOVD) succeeds because of a signing-trust gap rather than an incomplete driver list. The Windows kernel loads drivers signed with expired or revoked certificates, and a 2026 intrusion reported by Help Net Security used a decade-old forensic driver whose certificate had lo…
SentinelOne published a retrospective on five years of its ThreatOps program, a gamified, CTF-style threat hunting training platform. It began in 2020 as a webinar and has since trained more than 19,000 defenders. The company says the program influenced about $661.8M in closed-won revenue between September 2023 and September 2026. The pos…
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 …
This SentinelOne analysis argues that EDR killing, mostly through bring your own vulnerable driver (BYOVD), has grown from one-off tooling into a maintained, shared and sold capability. Ransomware actors disabled security tools in about 48% of 2024 intrusions, and BYOVD is the fastest-growing method within that figure. The article traces …
SentinelOne reports observing APT29 (Midnight Blizzard / Cozy Bear, Russia's SVR) running the CaptiveCrunch campaign, disclosed by Microsoft in July 2026, across multiple customer environments in three regions. The operation abuses captive-portal behaviour and forged name resolution to push fake browser updater downloads to roaming Window…
SentinelOne argues that "EDR killer" covers four different techniques, and a single driver-load rule leaves blind spots. The four are bring-your-own-vulnerable-driver (BYOVD), bring-your-own-installer, admin-to-kernel, and driverless suspension. The article gives hunt logic for each and recommends rolling them out in order of signal quali…