Just to clarify, this isn't a normal toothless petition, this is an official EU mechanism that allows citizens to bring problems to the attention of the European Commission, and force them to pass judgement on it legally. You can read more about it here.
It's good to be skeptical of anything asking for that personal info, but I'd suggest researching into it to confirm that it is indeed legit.
Thank you for signing the UK one :)
No worries, I'll edit it to try to make it more clear.