{"id":9078,"date":"2026-02-09T11:28:58","date_gmt":"2026-02-09T11:28:58","guid":{"rendered":"https:\/\/meic.cymru\/?p=9078"},"modified":"2026-02-09T11:28:58","modified_gmt":"2026-02-09T11:28:58","slug":"preifatrwydd-data-wrth-ddefnyddio-ai","status":"publish","type":"post","link":"https:\/\/meic.cymru\/cy\/2026\/02\/09\/preifatrwydd-data-wrth-ddefnyddio-ai\/","title":{"rendered":"Preifatrwydd Data wrth Ddefnyddio AI"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Pan fyddi di&#8217;n sgwrsio gyda Deallusrwydd Artiffisial (AI) neu&#8217;n ei ddefnyddio i olygu llun, mae&#8217;n hawdd anghofio dy fod di&#8217;n siarad \u00e2 system gyfrifiadurol enfawr. Bob tro byddi di&#8217;n anfon neges, rwyt ti&#8217;n rhannu data, felly beth sy&#8217;n digwydd iddo?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Ydy fy sgwrs AI yn breifat?<\/h3>\n\n\n\n<p>Mae&#8217;r mwyafrif o adnoddau AI yn &#8216;dysgu&#8217; wrth edrych ar y sgyrsiau y mae pobl yn eu cael gyda nhw. Golygai hyn, os wyt ti&#8217;n dweud cyfrinach wrth AI, yn disgrifio problem bersonol, neu&#8217;n uwchlwytho llun o dy d\u0177, gall AI ddefnyddio&#8217;r wybodaeth yma i hyfforddi&#8217;r fersiwn nesaf o&#8217;r feddalwedd. Hyd yn oed os yw&#8217;r cwmni&#8217;n dweud eu bod nhw&#8217;n &#8220;dad-adnabod&#8221; y data (sef tynnu dy enw oddi arno), mae manylion dy fywyd yn dal i gael ei storio yn y system.<\/p>\n\n\n\n<p>Y cyngor gorau i&#8217;w ddilyn yw, os na fyddet ti&#8217;n ei bostio ar broffil cyhoeddus, paid \u00e2&#8217;i rannu gydag AI.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Y gyfraith a dy hawliau<\/h3>\n\n\n\n<p>Mae&#8217;r gyfraith wedi dal i fyny \u00e2 thechnoleg i roi mwy o reolaeth i ti. O dan <a href=\"https:\/\/meic.cymru\/cy\/2026\/01\/28\/ai-ar-gyfraith\/\">Ddeddf Data (Defnydd a Mynediad) 2025<\/a>, mae&#8217;n rhaid i gwmn\u00efau bellach ddilyn rheolau llawer llymach ar gyfer pobl ifanc, er enghraifft:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rhaid i apiau a ddefnyddir gan rai dan 18 oed gael y gosodiadau preifatrwydd uchaf wedi&#8217;u troi ymlaen yn awtomatig.<\/li>\n\n\n\n<li>Os yw AI yn gwneud penderfyniad amdanat ti, fel gwrthod cais am swydd, mae gen ti hawl gyfreithiol bellach i ofyn i berson go iawn ei adolygu.<\/li>\n\n\n\n<li>Yn \u00f4l y gyfraith, mae bellach yn ofynnol ar gwmn\u00efau i fod \u00e2 ffordd hawdd i gwyno os wyt ti&#8217;n credu bod dy ddata yn cael ei gamddefnyddio.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized is-style-rounded\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/meic.cymru\/wp-content\/uploads\/2026\/02\/15-1024x576.png\" alt=\"Online profile with hidden personal info\" class=\"wp-image-9055\" style=\"width:500px\" srcset=\"https:\/\/meic.cymru\/wp-content\/uploads\/2026\/02\/15-1024x576.png 1024w, https:\/\/meic.cymru\/wp-content\/uploads\/2026\/02\/15-300x169.png 300w, https:\/\/meic.cymru\/wp-content\/uploads\/2026\/02\/15-768x432.png 768w, https:\/\/meic.cymru\/wp-content\/uploads\/2026\/02\/15-1536x864.png 1536w, https:\/\/meic.cymru\/wp-content\/uploads\/2026\/02\/15-2048x1152.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Sut i ddiogelu dy ddata<\/h3>\n\n\n\n<p>Mae cwmn\u00efau eisiau dy ddata am ei fod yn eu helpu i ragweld beth fyddi di&#8217;n ei brynu, beth fyddi di&#8217;n ei wylio, a sut fyddi di&#8217;n pleidleisio. Wrth fod yn ofalus \u00e2&#8217;r hyn rwyt ti&#8217;n rhannu, rwyt ti&#8217;n cadw&#8217;r wybodaeth yn nwylo dy hun.<\/p>\n\n\n\n<p>Bellach, mae gan lawer o robotiaid sgwrsio nodwedd ble maent yn cofio manylion amdanat er mwyn bod yn fwy defnyddiol. Fel arfer fedri di fynd i&#8217;r gosodiadau a diffodd hyn neu glirio&#8217;r hanes.<\/p>\n\n\n\n<p>Cyn i ti anfon awgrym, dileu unrhyw fanylion personol fel enw llawn, cyfeiriad e-bost, rhif ff\u00f4n, neu ble rwyt ti&#8217;n gweithio neu&#8217;n astudio. Fedri di ddefnyddio llefydd fel &#8220;[Enw]&#8221; neu &#8220;[Fy Ysgol]&#8221; yn lle, fel bod gan AI fynediad at y wybodaeth yna.<\/p>\n\n\n\n<p>Os wyt ti&#8217;n gofyn cwestiwn sensitif (e.e. yn ymwneud ag iechyd neu berthynas), gwiria os oes gan yr AI fodd &#8216;Sgwrs Cyfnod Byr&#8217; neu &#8216;Anhysbys&#8217; fel nad yw&#8217;n cadw dy ddata. Byddai hyn yn sicrhau nad yw&#8217;r sgwrs yn cael ei chadw yn dy hanes na&#8217;i defnyddio ar gyfer hyfforddiant.<\/p>\n\n\n\n<p>Pan fyddi di&#8217;n uwchlwytho llun, mae&#8217;n aml yn cynnwys gwybodaeth gudd fel pryd a ble yn union y cafodd ei dynnu. Gelwir hyn yn fetadata. Bydd yn ofalus wrth uwchlwytho ffeiliau gwreiddiol i olygyddion delweddau AI. Yn lle hynny, ceisia dynnu sgrinlun o&#8217;r llun a defnyddio hwnnw, gan nad yw sgrinluniau fel arfer yn cario&#8217;r un data lleoliad.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Angen siarad?<\/h3>\n\n\n\n<p>Gall godi ofn ar rywun os wyt ti&#8217;n meddwl bod app wedi cymryd dy ddata heb ganiat\u00e2d, neu os wyt ti wedi rhannu rhywbeth gydag AI rwyt ti&#8217;n difaru. Nid oes rhaid i ti ddelio \u00e2&#8217;r straen yma ar ben dy hun. <a href=\"http:\/\/www.meic.cymru\/\">Siarada \u00e2 Meic<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pan fyddi di&#8217;n sgwrsio gyda Deallusrwydd Artiffisial (AI) neu&#8217;n ei ddefnyddio i olygu llun, mae&#8217;n hawdd anghofio dy fod di&#8217;n siarad \u00e2 system gyfrifiadurol enfawr. Bob tro byddi di&#8217;n anfon neges, rwyt ti&#8217;n rhannu data, felly beth sy&#8217;n digwydd iddo? Ydy fy sgwrs AI yn breifat? Mae&#8217;r mwyafrif o adnoddau AI yn &#8216;dysgu&#8217; wrth edrych [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":9054,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1659],"tags":[2432,2433,4836,4837,4839,4795,4838],"class_list":["post-9078","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-diogelwch-ar-lein","tag-ai-cy","tag-artificial-intelligence-cy","tag-data-privacy","tag-data-use-and-access-act-2025-2","tag-ddeddf-data-defnydd-a-mynediad-2025","tag-deallusrwydd-artiffisial","tag-preifatrwydd-data"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Preifatrwydd Data wrth Ddefnyddio AI - Meic<\/title>\n<meta name=\"description\" content=\"Pan fyddi di&#039;n sgwrsio ag AI, bob tro rwyt ti&#039;n anfon neges, rwyt ti&#039;n rhannu data. 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