Many users have reported that using private Instagram viewer apps can infect their devices with viruses and spyware. This is true because many of these programs come from unreliable sources. If you utilize an app housed on a different server or system, you could contract a virus. Even if you have a virus on your phone, it might be more challenging to get one on a computer. You are still at risk because phishing and hacking are still a possibility. Use no programs that want human authentication or surveys because doing so leaves your system vulnerable to attack.