Every person whom the German criminal defense lawyer spoke to had been using the encrypted phone network EncroChat and was worried their devices had been hacked, potentially exposing crimes they may have committed.“Then I realized—oh my gosh—the flood is coming.”Months earlier, police across Europe, led by French and Dutch forces, revealed they had compromised the EncroChat network.The hack, one of the largest ever conducted by police, was an intelligence gold mine—with hundreds arrested, homes raided, and thousands of kilograms of drugs seized.However, a growing number of legal challenges are questioning the hacking operation.The cases, many of which have been reported in detail by Computer Weekly, are complex: Each country has its own legal system with separate rules around the types of evidence that can be used and the processes prosecutors need to follow."