whisper is not anonymous and doesn't protect your privacy - period
"User data, including Whisper postings that users believe they have deleted, is collated in a searchable database. The company has no access to users’ names or phone numbers, but is storing information about the precise time and approximate location of all previous messages posted through the app. The data, which stretches back to the app’s launch in 2012, is being stored indefinitely, a practice seemingly at odds with Whisper’s stated policy of holding the data only for “a brief period of time”.
- A team headed by Whisper’s editor-in-chief, Neetzan Zimmerman, is closely monitoring users it believes are potentially newsworthy, delving into the history of their activity on the app and tracking their movements through the mapping tool. Among the many users currently being targeted are military personnel and individuals claiming to work at Yahoo, Disney and on Capitol Hill.
- Whisper’s policy toward sharing user data with law enforcement has prompted it on occasions to provide information to both the FBI and MI5. Both cases involved potentially imminent threats to life, Whisper said, a practice standard in the tech industry. But privacy experts who reviewed Whisper’s terms of service for the Guardian said the company appeared to require a lower legal threshold for providing user information to authorities than other tech companies.
do not believe what they say but what they do and especially after someone proofs it and they don't deny it - only change their privacy rules