Tech firms including Google, Facebook, Microsoft, Twitter, and LinkedIn all submitted lawful briefs on Thursday, supporting Apple’s battle against the US government which would see Apple make an backdoor for an iPhone if it were to lose.

Apple described the government’s request for a backdoor into the San Bernardino shooter’s iPhone as a dangerous point of reference which threatens client security. Many people believe that if the US government pressures Apple’s hand in this situation, it’ll be easier to do in future.

The tech organizations which filed legal briefs in support of Apple framed into two coalitions. The first, which includes Google, Microsoft, Facebook, Mozilla, Snapchat, Dropbox, and others said that the All Writs Act was created before the light and that it goes too far back to contend that the law can be used to constrain engineers to disable security protections. One caveat to this argument is that the act has been updated throughout the years.

The All Writs Act approves the US government courts to “issue all writs necessary or appropriate in help of their individual jurisdictions and agreeable to the uses and principles of law.”

The other coalition sent an option message in support of Apple which fought that the Communications Assistance for Law Enforcement Act (CALEA) of 1994, alongside other statutes, had already made it clear that “information service” organizations should be exempted from allowing interference of communications.

Prior on this week, a Brooklyn judge ruled that the US government couldn’t look for similar assistance from Apple in a medication related case, saying that it had violated its power.