Vivek posts five‑layer mobile security guide

- Security author Vivek published a five‑layer mobile defense checklist covering OS updates, strong auth, app hygiene, network protections, and social awareness for admins. - The layers are: timely OS updates, multifactor authentication, vetted app installs, VPN/DNS protections, and user training plus incident reporting. - He shared the checklist on X as a defender primer amid rising SMS and rogue BTS smishing threats. (x.com)