U.S. government agencies will hold a classified briefing for all senators on Wednesday on China's alleged efforts known as Salt Typhoon to burrow deep into American telecommunications companies and steal data about U.

Many encrypted communications apps protect user correspondence with so-called E2EE, or end-to-end-encryption. Usually, messages are scrambled in a way that theoretically allows a communication app’s developer to read their contents. E2EEE scrambles messages before they leave the user’s device, which means not even the app developer can access it.

The Chinese government espionage campaign that has deeply penetrated more than a dozen U.S. telecommunications companies is the “worst telecom hack in our nation’s history — by far,” a senior U.S. senator told The Washington Post in an interview this week.

U.S. government agencies held a classified briefing for all senators on Wednesday on China's alleged efforts known as Salt Typhoon to burrow deep into American telecommunications companies and steal data about U.

U.S. government agencies will hold a classified briefing for all senators on Wednesday on China's alleged efforts known as Salt Typhoon to burrow deep into American telecommunications companies and steal data about U.

U.S. government agencies will hold a classified briefing for all senators on Wednesday on China's alleged efforts known as Salt Typhoon to burrow deep into American telecommunications companies and steal data about U.

At least eight U.S. telecommunications firms were compromised in the attack, a senior White House official said.

U.S. officials say they're investigating Chinese government-affiliated hackers who compromised the networks of of U.S. communication companies and were able to intercept private communications of people affiliated with the U.