Four Campaigns, One Nightmare: How 2026's Attacks Bypass Every Small-Business Defence

Episode notes

In this urgent episode of Small Business Cybersecurity Guy, hosts Mauven MacLeod and Graham Falkner join the notably fed-up Noel Bradford to unpack four simultaneous, high‑impact campaigns that emerged between late January and early February 2026. We walk listeners through detailed research from Trellix, Securonix, Rapid7 and Microsoft and explain why these attacks matter to every small business — even if you think you’re too small to be a target. We open with APT28 (Fancy Bear) exploiting CVE‑2026‑21509: a weaponised Office document that triggers on open, drops an Outlook backdoor (MiniDoor/NotDoor) and a C++ implant (Beardshell) injected into svchost.exe, exfiltrating email and system data while blending traffic into legitimate cloud services. Next, Securonix’s “Dead Vax” campaign shows how commodity criminals now match nation‑state tradecraft. Phishing delivers VHD files that mount like drives, bypass mark‑of‑the‑web warnings and execute fileless loaders that ultimately deploy AsyncRAT — giving attackers remote control, keylogging and full data access.