end-to-end encryption intermediary confidentiality integrity

End-to-end encryption can hide messages even from the service carrying them

With end-to-end encryption, a message is encrypted on one person's device and decrypted on the other person's device. Services carrying the message do not need to be able to read it. But the protection cannot save a message if one of the devices itself has been compromised.

Early sewers were built to remove bad smells

The first proper sewage systems were likely built to carry away foul smells, not because people understood the health dangers of human waste. The health benefits of sewer systems became clear only after they were built.

Lincoln tried to resupply Fort Sumter without sending weapons

In April 1861, Abraham Lincoln informed South Carolina authorities that a federal expedition would bring provisions to Fort Sumter, not additional troops or ammunition unless the fort was attacked. The move aimed to maintain the garrison while placing responsibility for starting hostilities on Confederate forces. Confederate artillery opened fire before the supplies arrived.

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end-to-end encryption intermediary confidentiality integrity

End-to-end encryption can hide messages even from the service carrying them

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