Just two years ago the US Copyright Office declared jailbreaking (hacking a device to run software or programs that the original device was never intended to run) legal but now an exemption is set to expire which would make jailbreaking illegal again.
The EEF believes that “[Jailbreaking] is important to programmers, enthusiasts, and users. But jailbreaking creates legal uncertainty. Some device manufacturers claim that jailbreaking violates Section 1201 of the Digital Millennium Copyright Act (DCMA), which carries stiff penalties.”
If the petition to extend the coverage of jailbroken smartphones and tablets fails it could mean bad news to app developers who do business on alternative appstores like Cydia.