TamperedChef Malvertising Uses US Shell Companies to Sign Trojanized Apps with Valid Certificates, Deploying Stealth Backdoor Cybercriminals TamperedChef Malvertising Uses US Shell Companies to Sign Trojanized Apps with Valid Certificates, Deploying Stealth Backdoor Ddos November 24, 2025 0 Read More Read more about TamperedChef Malvertising Uses US Shell Companies to Sign Trojanized Apps with Valid Certificates, Deploying Stealth Backdoor