Verizon screwup caused 911 outage in 6 states-carrier agrees to $1M fine

The outage was caused by 'the reapplication of a known flawed security policy update file.' Verizon failed to deliver hundreds of 911 calls in several states during the 1 hour and 44 minutes outage.

Despite knowing the flawed update file's role in a previous outage, Verizon reintroduced it due to insufficient protocols, leading to the December outage.

Read at Ars Technica