Which of the following is NOT a category of a Potentially Harmful App (PHA)? By vmartinez Which of the following is NOT a category of a Potentially Harmful App (PHA)? (A) Backdoor. (B) Denial of Service. (C) Hostile downloader. (D) Jailbreaking. Related content Related questions:Which of the following audiences includes shoppers…What Search Console report indicates if your website…Brenda's working on improving a Google Search Ad's…Is “Device Category” a Dimension or Metric?