OverviewThis week had a blunt theme: the highest-value systems are still the ones attackers want first. Domain controllers, VPN gateways, SD-WAN managers, file-transfer servers, mobile devices, developer tools, and even fuel tank monitoring systems all showed up in the urgent pile. The best signal is not that every team needs to chase every headline. It is that exposure, identity, and patch verification still decide whether an incident stays small.Reality check: If a system authenticates users, moves files, manages infrastructure, or touches operations, treat public exposure and delayed patching as business risk, not just IT cleanup.Top 10 Security Signals1. SolarWinds Serv-U flaw moves from patch notice to active exploitationWhat happened: CISA warned that attackers are exploiting CVE-2026-28318, a recently patched SolarWinds Serv-U denial-of-service flaw, after SolarWinds said specially crafted unauthenticated POST requests using Content-Encoding: deflate can crash the Serv-U…
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