IP address leads to ISP (Internet Service Provider), were your personal data are available to LE only with a court order signed by a judge.
Originally Posted by waverunner234
Not necessarily true. Comcast has an emergency disclosure provision (and probably other internet providers do as well):
Emergency Disclosure
18 U.S.C. § 2702(b)(8) and § 2702(c)(4) contain provisions for the expedited release of subscriber information in situations where there is an immediate danger of death or an immediate risk of serious physical injury.
Law enforcement agencies need only to adequately complete Comcast’s Emergency Situation Disclosure Request form (Reference Attachment #1) and they will receive accelerated subscriber identification.
As long as the police are willing to pay, Comcast will even record all of your internet activity and emails:
Pen Register / Trap and Trace Device
Title 18 U.S.C. § 3123 provides a mechanism for authorizing and approving the installation and use of a pen register or a trap and trace device pursuant to court order. All orders must be coordinated prior to submission to Comcast. Law enforcement will be asked to agree to reimburse Comcast's reasonable costs incurred to purchase and/or install and monitor necessary equipment. See "Reimbursement," below.
http://blogs.computerworld.com/15667...lice_about_you