Sandy Hook Promise and others use anonymous tips to prevent school shootings. Hackers exposed their data

Sandy Hook Promise and others use anonymous tips to prevent school shootings. Hackers exposed their data

The nonprofit Sandy Hook Promise sought to turn a tragedy into a force for good. Using tips to its “Say Something Anonymous Reporting System,” the group formed by parents of children who died in one of the nation’s most horrific school shootings said last year it had prevented 176 acts of violence at schools and other locations. But those tips — and countless others — are no longer anonymous.  A recent hack of P3 Global Intel — the company that …