Telephony Denial of Services (TDOS) to Public Safety Communications Phone Service

Information continues to be received from multiple jurisdictions indicating the existence of ongoing attacks targeting the telephone systems of public sector entities. Over 200 such attacks have been identified to date. The perpetrators of the attack launched numerous phone calls against the target telephone network, tying up the system and preventing the agency from receiving legitimate calls. This type of attack is referred to as a TDoS or Telephony Denial of Service Attack.