The Netherlands cyber agency warned that attackers are exploiting a recently patched macOS flaw to gain root on internet-exposed Macs and install cryptocurrency miners. Tracked as CVE-2026-65400 and scored 9.8, the authentication flaw in the Screen Sharing component lets a network attacker authenticate to the built-in remote desktop service, which uses VNC on port 5900, without valid credentials due to flawed state management. Apple fixed it in emergency updates on August 6 for macOS Tahoe, Sequoia, and Sonoma. Screen Sharing is off by default, but any Mac with it enabled and reachable from the internet is at high risk, and several have already been compromised to run Monero miners.
The Windows version of the Chromium-based Hola Browser has been compromised in a supply-chain attack that delivered an undeclared cryptocurrency miner. The compromise was caught during AppEsteem certification checks, with Sophos and others finding an uncertified, unsigned, obfuscated executable, me.exe, under C:\Program Files\Hola\. Analysis identified it as a Monero miner: it adds a Windows Defender exclusion, copies itself to Program Files as HolaMonitorService.exe, creates an auto-starting service named hola_monitor_svc, and runs when the machine is idle. Hola - the Israeli company behind Hola VPN, long controversial for turning free users into proxies - confirmed the compromise (independently detected by Sygnia) but says only about 0.1% of users were affected.
TrustStrike Labs