Answer:
Going Dark
Step-by-step explanation:
Going dark means that people who are given responsibility to protect our us are unable to access the evidence they need to prosecute crime and prevent terrorism despite having lawful authority.
The government agencies have the legal authority to intercept , access communications but lack the technical ability to do so, because all the types of data available to law enforcement agencies are encrypted.
The data is divided into two categories, e-mail, live chat sessions and phone calls are called data in motion while data stored in devices is known as data at rest. Earlier it was easier to conduct surveillance as the authorities just had to tap the phone call but it is not easy to do so now.