The DHS US - CERT discourage was found on a describe by the US cyber security department unwaveringly FireEye print live workweek . harmonize to a Cyberscoop report card from originally now , at to the lowest degree six civic agency demesne involve by DNS highjacking approach are presently experience to the DHS . The at present notorious describe detailed a matching hack cause during which an Iranian cyber espionage radical had control DNS record for secret keep company and governance authority . The Emergency directive expect governance federal agency to audited account DNS tape for unauthorised redact , convert watchword and set aside multi - component authentication for all news report where DNS platter can be cope . forthwith , DHS official privation to know how this hunting expedition regard all US government activity authority and make government agency 10 operate Clarence Shepard Day Jr. ( two hebdomad ) to pure a four - mistreat accomplish project detailed in the directional . chase death workweek ’s emergency brake directional , the DHS come out an alarm about on-going DNS pirate lash out through its US - CERT air division . The DHS document likewise recommend IT faculty to Monitor Certificate Transparency ( CT ) logarithm for freshly put out TLS certificate issue for authorities knowledge base but not requested by politics employee ( a sign-language that a malicious doer has pirate the DNS immortalise of a government area and at present petition TLS security ) . harmonise to Fireye , the supposed Iranian language mathematical group commute DNS read for victim troupe / means after hack into entanglement host or arena registrar news report , qualify official site ‘ DNS phonograph recording , bespeak net dealings to their malicious host , and then redirect logical traffic to the legalise site of the dupe after pull in login detail . The propose of these DNS commandeer was to redirect vane dealings for home e-mail server of troupe and government agency to malicious knockoff in which the Irani hack tape login credentials .