Apple has denied the U.S. government’s request to remove the safety measures of an iPhone used by one of the terrorists involved in the San Bernardino attack.

After their response to the government, Apple published an open letter on their website intended for the public to read.

In the letter, Apple explains that they’ve relied on encryption to keep all their customer’s data as safe and secure as possible.

Despite that, they’ve done what they can to aid the the ongoing investigation with the attack in San Bernardino last December.

However, they said that the FBI has proposed using the All Writs Act of 1789 to justify having Apple “make a new version of the iPhone operating system, circumventing several important security features, and install it on an iPhone recovered during the investigation.”

White House Spokesman Josh Earnest says that the FBI doesn’t want Apple to “redesign its product or create a new backdoor,” and only wants “something that will have impact on this device.”

Moreover, Apple said in their letter that the FBI has good intentions, but they’re simply asking for software that that doesn’t exist and which Apple feels is far too dangerous to create since “the technique could be used over and over again, on any number of devices.”

Apple also feels that if they agreed to this request, it would set “a dangerous precedent” that would ultimately allow the government to use the All Writs Act of 1789 to “reach into anyone’s device to capture their data.”