According to Edward Snowden, now in the USA they are just launching the technology of searching for information in the smartphone. This is a serious breach of privacy.
How to know is someone is listening to your private talk by tapping your phone? Here is the expert advice to prevent someone from tapping your phone
Like Pegasus, another spyware has been exposed. The name of this spyware is REGIN, which has been prepared by a company named QuaDream. This spyware can spy on any iPhone user without his knowledge.