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 Do Son November 24, 2025 0 Acronis’ Threat Research Unit (TRU) has uncovered a massive global malvertising and SEO-poisoning campaign—dubbed TamperedChef—that distributes fully... Read More Read more about TamperedChef Malvertising Uses US Shell Companies to Sign Trojanized Apps with Valid Certificates, Deploying Stealth Backdoor