threat-intel Ukraine warns fake CAPTCHAs are being used to make you hack yourself Ukraine's CERT-UA has warned that Russian hackers, specifically a branch of the Sandworm group, are using fake CAPTCHA challenges to trick users into executing PowerShell commands on their own computers, installing reconnaissance software. This campaign has been ongoing since June and is targeting Ukrainian websites, b… Graham Cluley · Jul 21, 2026 High RUclickfixpowershellcaptcha