PURPOSE Malware can steal data, damage files, or spread to other systems. WARNING SIGNS Unexpected pop-ups, antivirus alerts, strange files, slow performance, browser redirects, unknown apps, or messages sent from your account. WHAT TO DO Stop using the device for sensitive work and report the issue immediately. DO NOT Do not install random cleanup tools, disable security software, or delete evidence unless instructed. INCLUDE Describe what happened, what you clicked, any files opened, and when symptoms began.