washington u.s. house representatives information technology team week reinstate access internet network software applications host google cloud service company address potential security fear accord email see reuters yahoo mail remain inaccessible however blacklist since house information security office say april 30 memo detect increase ransomware attack network two restrictions relate come within days make communication among lawmakers staff difficult several congressional aid say devices connect house internet via wi-fi ethernet cable bar access appspot.com domain alphabet inc google host custom-built apps may due concern potential security vulnerability identify publicly fbi june 2015 base google corrective action remove suspicious applications appspot.com infosec unblock access appspot.com house network email send house technology service desk monday say unclear apparent appspot.com flaw cause damage present actual threat house information service office respond request comment statement yahoo spokesperson say work house technology staff address question unfortunately disappoint move quickly recommend change would good protect employees spokesperson say two individuals fell victim ransomware click infect word document email attachments source familiar hack say infect file able recover without pay ransom source tell reuters last week house lift block google-hosted apps yahoo mail remain blacklist