Tech industry leaders including Alphabet Inc’s Google, Facebook Inc, Microsoft Corp, AT&T and more than two dozen other Internet and technology companies filed legal briefs on Thursday asking a judge to support Apple Inc in its encryption battle with the U.S. government.

The rare display of unity and support from Apple’s sometime-rivals showed the breadth of Silicon Valley’s opposition to the government’s anti-encryption effort, a position endorsed by the United Nations human rights chief.

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The Stanford Law School Center for Internet and Society filed a separate brief on Thursday on behalf of a group of well-known experts on iPhone security and encryption, including Charlie Miller, Dino Dai Zovi, Bruce Schneier and Jonathan Zdziarski.