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: Added full support for Microsoft Windows 10 RTM (Build 10240), ensuring stability on the then-new operating system.
Smart Security injected a false registry key. The virus, convinced it had already won, wrote its payload to a virtual drive that didn’t exist. Then, NOD32 Antivirus—the cleanup crew—swept the decoy files into the quarantine vault.
The router vulnerability scanner was flagging false positives for UPnP on many ISP routers (Fritz!Box and Xfinity modems). Build 803191 adds a whitelist for known ISP firmware, eliminating those annoying "Your router is insecure" warnings when it actually isn't.
Based on ESET’s product history and version numbering, here is the most likely context for that number — followed by a ready-to-use social or blog post.