Dywed datganiad y llu bod arbenigwyr diogelwch seibr yn rhoi cymorth i’r ymchwiliad a bod camau priodol wedi eu cymryd i adfer gwasanaethau wedi’r ymosodiad.
“Ar hyn o bryd, dyw ein hymchwiliad heb ganfod tystiolaeth fod data personol y cyhoedd wedi ei gyrchu neu ei beryglu o ganlyniad i’r digwyddiad yma,” dywedodd.
“Rydym, fodd bynnag, yn parhau i ymchwilio a allai unrhyw wybodaeth ynglŷn â’n staff fod wedi ei gyrchu neu ei beryglu, ac rydym yn cymryd pob cam priodol i warchod y wybodaeth yna ac yn rhoi cyngor priodol i gydweithwyr os oes angen.
“Mae’r ymchwiliad yn parhau ac yn cael ei reoli gan Tarian trwy eu huned troseddu seibr rhanbarthol ac rydym yn parhau i fonitro systemau’r llu’n fanwl.
“Rydym yn deall y pryder y gallai hyn achosi ac rydym eisiau rhoi sicrwydd i’r cyhoedd ein bod wedi, a byddwn yn parhau i gymryd yr holl gamau angenrheidiol i warchod ein gwybodaeth a chynnal diogelwch ein systemau.”
Gan ddiolch i’r cyhoedd “am eich amynedd a dealltwriaeth”, ychwanegodd y llu y bydd yn rhoi mwy o wybodaeth “pan rydym mewn sefyllfa i wneud hynny”.
Dilynwch Cymru Fyw ar Facebook, dolen allanol, X, dolen allanol, Instagram, dolen allanol neu TikTok, dolen allanol.
Anfonwch unrhyw syniadau am straeon i cymrufyw@bbc.co.uk, dolen allanol neu cysylltwch drwy WhatsApp ar 07709850033.
Lawrlwythwch yr ap am y diweddaraf o Gymru ar eich dyfais symudol.
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