In the face of increased threats to user privacy, companies such as Apple, Google, and others have moved to encrypt more and more channels.
Blockchain technology has uses in security, but experts say it's not the universal answer to security problems.
Security experts are pushing for a new process to disclose hardware vulnerabilities.
The issues over encrypted data faced by Telegram in Russia and Apple in China could portend a conflict in the U.S. soon.
The FBI and NSA desire to weaken encryption is still the same, despite change at the top of the agencies.