{"id":6331,"date":"2025-02-07T09:43:00","date_gmt":"2025-02-07T09:43:00","guid":{"rendered":"https:\/\/meic.cymru\/2025\/02\/07\/avoiding-scams\/"},"modified":"2025-11-04T10:46:32","modified_gmt":"2025-11-04T10:46:32","slug":"osgoi-sgamiau-a-chadwn-ddiogel-ar-lein","status":"publish","type":"post","link":"https:\/\/meic.cymru\/cy\/2025\/02\/07\/osgoi-sgamiau-a-chadwn-ddiogel-ar-lein\/","title":{"rendered":"Osgoi Sgamiau a Chadw\u2019n Ddiogel Ar-lein"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Mae\u2019r we yn rhan fawr o\u2019n bywydau ni. Rydym yn cysylltu gyda ffrindiau ar gyfryngau cymdeithasol ac yn chwilio am fargeinion ar-lein. Ond, mae sgamwyr yn defnyddio\u2019r we hefyd. Dyma ganllaw ar sut i wneud y defnydd gorau o\u2019r we, osgoi sgamiau a <a href=\"https:\/\/www.meiccymru.org\/cym\/diogelwch-ar-lein\/\">chadw&#8217;n yn ddiogel ar-lein<\/a>.\u00a0<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Cynigion sy\u2019n rhy dda i fod yn wir<\/h3>\n\n\n\n<p>Os wyt ti\u2019n gweld bargen ar-lein sydd yn anhygoel o dda fel ff\u00f4n newydd sbon yn rhad iawn, bydd yn ofalus. Gall hyn feddwl bod y nwyddau yn rhai ffug, gall fod yn ymgais i ddwyn dy fanylion banc neu efallai bod y cynnyrch ddim hyd yn oed yn bodoli. Os ydy rhywbeth yn swnio\u2019n rhy dda i fod yn wir, mwy na thebyg ei fod o.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ceisiadau brys am arian<\/h3>\n\n\n\n<p>Mae sgamwyr yn ceisio gwneud i ti deimlo panig. Efallai byddant yn honni bod aelod o dy deulu mewn trafferth neu dy fod am fethu allan ar gynnig arbennig sydd ond ar gael heddiw. Eu bwriad yw rhoi pwysau arnat ti i wneud penderfyniad heb feddwl. Cymer funud i feddwl, gwiria\u2019r wybodaeth yn annibynnol a siarada gyda rhywun cyn gwneud unrhyw beth.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">E-byst a negeseuon gwe-rwydo<\/h3>\n\n\n\n<p>Mae gwe-rwydo (phishing) yn sgam cyffredin pan mae sgamwyr yn ceisio cael dy fanylion personol. Mae\u2019r sgamiau yma fel arfer yn negeseuon neu e-byst sydd yn edrych fel eu bod yn dod gan blatfformau dilys fel dy fanc, gwefannau cyfryngau cymdeithasol neu\u2019r llywodraeth. Maent yn aml yn cynnwys dolenni ac atodiadau sy\u2019n mynd a ti i wefannau ffug (sy\u2019n debyg iawn i\u2019r rhai go iawn) sydd wedi\u2019u dylunio i ddwyn dy fanylion neu lawrlwytho maleiswedd (malware) ar dy ddyfais.<\/p>\n\n\n\n<p>Paid clicio ar ddolenni neu atodiadau gan bobl ddiarth. Gwiria\u2019r e-bost am gamsillafiadau ac enwau pyrth (domain) anghyffredin. Hyd yn oed os wyt ti&#8217;n meddwl bod y neges yn ddibynadwy, mae\u2019n well gwneud yn si\u0175r bod y neges yn dod gan y person neu&#8217;r sefydliad cywir.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized is-style-rounded\"><a href=\"https:\/\/meic.cymru\/wp-content\/uploads\/2025\/07\/In-blog-ProMo-New-Website-Image.png\"><img decoding=\"async\" src=\"https:\/\/meic.cymru\/wp-content\/uploads\/2025\/07\/In-blog-ProMo-New-Website-Image-1024x576.png\" alt=\"Graphic of a website URL with a padlock and https \" class=\"wp-image-9378\" style=\"width:500px\"\/><\/a><\/figure>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Gwefannau ffug<\/h3>\n\n\n\n<p>Mae gwefannau ffug wedi\u2019u dylunio i edrych yr un fath a gwefannau go iawn er mwyn cael mynediad at dy wybodaeth bersonol. Cyn teipio unrhyw wybodaeth sensitif, fel manylion dy gerdyn banc neu dy fanylion mewngofnodi, gwiria gyfeiriad y wefan (URL). Galli di ddod o hyd i\u2019r URL ar frig y dudalen. Mae\u2019r URL yn rhes hir o lythrennau a symbolau sy\u2019n cychwyn gyda \u201chttp\u201d neu \u201chttps\u201d.<\/p>\n\n\n\n<p>Edrycha am y symbol padloc (HTTPS) drws nesaf i\u2019r URL. Os wyt ti\u2019n gweld \u201chttp\u201d heb yr \u201cs\u201d neu symbol padloc, nid yw\u2019r cysylltiad yn ddiogel ac mae angen cymryd gofal.<\/p>\n\n\n\n<p>Gwylia allan am wefannau sydd wedi\u2019u camsillafu, wedi\u2019u dylunio mewn ffordd amhroffesiynol neu os yw cyfeiriad y wefan yn anghyffredin.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sgamiau rhamant<\/h3>\n\n\n\n<p>Mae sgamiau rhamant yn targedu pobl sy\u2019n chwilio am gariad ar-lein. Mae sgamwyr yn creu proffil ffug ac yn ceisio meithrin cysylltiad emosiynol yn sydyn. Yna, byddant yn gofyn am arian, fel arfer ar gyfer argyfyngau ffug fel costau teithio neu filiau meddygol. Paid gyrru arian i unrhyw un ti wedi cwrdd ar-lein, dim ots pa mor gryf yw\u2019r cysylltiad rhyngoch chi.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sgamiau technoleg<\/h3>\n\n\n\n<p>Mae sgamiau technoleg fel arfer yn negeseuon neu alwadau annisgwyl sy\u2019n honni fod feirws yn dy gyfrifiadur. Maent yn ceisio cael mynediad o bell i dy gyfrifiadur i ddatrys y broblem, ond byddant yn lawrlwytho maleiswedd neu dwyn dy ddata. Paid \u00e2 rhoi mynediad o bell i dy gyfrifiadur i rywun dwyt ti ddim yn eu hadnabod. Ni fydd cwmn\u00efau technoleg yn cysylltu gyda thi yn annisgwyl fel hyn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Gwiria adolygiadau<\/h3>\n\n\n\n<p>Cyn prynu o wefannau newydd, gwiria adolygiadau gan siopwyr eraill. Mae gwefannau fel <a href=\"https:\/\/uk.trustpilot.com\/\">Trustpilot<\/a> yn ddefnyddiol. Edrycha am adolygiadau negyddol, adroddiadau am sgamiau neu nifer amheus o adolygiadau pum seren. Gall hyn helpu ti wybod os yw gwefan yn ddibynadwy.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized is-style-rounded\"><a href=\"https:\/\/meic.cymru\/wp-content\/uploads\/2025\/02\/5-1-2048x1152-2.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/meic.cymru\/wp-content\/uploads\/2025\/02\/5-1-2048x1152-2-1024x576.png\" alt=\"Graphic of a key holding weights, showing strength in security\" class=\"wp-image-2627\" style=\"width:500px\" srcset=\"https:\/\/meic.cymru\/wp-content\/uploads\/2025\/02\/5-1-2048x1152-2-1024x576.png 1024w, https:\/\/meic.cymru\/wp-content\/uploads\/2025\/02\/5-1-2048x1152-2-300x169.png 300w, https:\/\/meic.cymru\/wp-content\/uploads\/2025\/02\/5-1-2048x1152-2-768x432.png 768w, https:\/\/meic.cymru\/wp-content\/uploads\/2025\/02\/5-1-2048x1152-2-1536x864.png 1536w, https:\/\/meic.cymru\/wp-content\/uploads\/2025\/02\/5-1-2048x1152-2.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Gwarchod gwybodaeth bersonol<\/h3>\n\n\n\n<p>Bydd yn ymwybodol o\u2019r hyn ti\u2019n rhannu ar-lein, yn enwedig ar gyfryngau cymdeithasol. Gall sgamwyr ddefnyddio\u2019r wybodaeth yma i dy dargedu. Defnyddia gyfrineiriau cryf ac unigryw i dy gyfrifon a defnyddia brawf dilysu dau gam pryd bynnag mae modd.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Hysbysu am weithgarwch amheus<\/h3>\n\n\n\n<p>Os wyt ti\u2019n gweld rhywbeth amheus neu os wyt ti\u2019n meddwl dy fod wedi cael dy dargedu gan sgamwyr, mae\u2019n bwysig hysbysu\u2019r awdurdodau cywir. Yng Nghymru, <a href=\"https:\/\/www.actionfraud.police.uk\/welsh\">Action Fraud<\/a> sy\u2019n derbyn adroddiadau am dwyll ar-lein.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Bydd yn ofalus gyda Wi-Fi cyhoeddus<\/h3>\n\n\n\n<p>Mae\u2019n well osgoi gwneud pethau fel bancio neu brynu nwyddau pan wyt ti\u2019n defnyddio Wi-Fi cyhoeddus. Nid yw\u2019r rhwydweithiau yma\u2019n cael eu diogelu cystal \u00e2 Wi-Fi cyffredin, sy\u2019n gwneud hi\u2019n haws i sgamwyr ddwyn dy ddata. Os oes rhaid i ti ddefnyddio Wi-Fi cyhoeddus, ystyria ddefnyddio VPN i fod yn fwy diogel.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sgamiau cyfryngau cymdeithasol<\/h3>\n\n\n\n<p>Bydd yn wyliadwrus o gynnwys, cwisiau neu holiaduron amheus ar-lein sy\u2019n gofyn am dy fanylion. Gallent gael eu defnyddio i ddwyn dy hunaniaeth neu ar gyfer sgamiau eraill. Paid \u00e2 rhannu gwybodaeth sensitif os nad wyt ti\u2019n hollol si\u0175r pwy sydd yn derbyn y wybodaeth.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized is-style-rounded\"><a href=\"https:\/\/meic.cymru\/wp-content\/uploads\/2025\/02\/7-1536x864-1.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/meic.cymru\/wp-content\/uploads\/2025\/02\/7-1536x864-1-1024x576.png\" alt=\"Graphic of a person holding a mobile phone and messaging someone they don't know\" class=\"wp-image-2628\" style=\"width:500px\" srcset=\"https:\/\/meic.cymru\/wp-content\/uploads\/2025\/02\/7-1536x864-1-1024x576.png 1024w, https:\/\/meic.cymru\/wp-content\/uploads\/2025\/02\/7-1536x864-1-300x169.png 300w, https:\/\/meic.cymru\/wp-content\/uploads\/2025\/02\/7-1536x864-1-768x432.png 768w, https:\/\/meic.cymru\/wp-content\/uploads\/2025\/02\/7-1536x864-1.png 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Sgamiau ocsiwn<\/h3>\n\n\n\n<p>Os wyt ti\u2019n prynu a gwerthu nwyddau mewn ocsiwn ar-lein neu ar dudalennau cymunedol fel Facebook Marketplace, bydda\u2019n ofalus gyda phrynwyr sydd eisiau talu gyda dulliau anghyffredin fel defnyddio talebau. Hefyd, gwylia allan am brynwyr sy\u2019n talu gormod ac yna\u2019n gofyn am eu harian yn \u00f4l. Os wyt ti\u2019n cwrdd \u00e2 gwerthwr wyneb yn wyneb, mae\u2019n bwysig cyfarfod mewn lle cyhoeddus.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sgamiau elusennol<\/h3>\n\n\n\n<p>Cyn cyfrannu arian at elusen ar-lein, sicrha fod yn elusen yn un dilys. Chwilia am rif elusen gofrestredig a chwilia am ffyrdd o gyfrannu\u2019n ddiogel. Bydd yn wyliadwrus o geisiadau annisgwyl am arian, yn enwedig os ydynt yn rhoi pwysau arnat ti i gyfrannu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sgamiau cystadleuaeth a\u2019r loteri<\/h3>\n\n\n\n<p>Bydd yn wyliadwrus o negeseuon sy\u2019n dweud dy fod wedi ennill cystadleuaeth neu loteri nad oeddet ti wedi trio amdano. Mae\u2019r rhain fel arfer yn gofyn i ti dalu ffi i gael dy wobr, a wnei di byth dderbyn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sgamiau swyddi<\/h3>\n\n\n\n<p>Bydd yn ofalus gyda chynigion swyddi sy\u2019n swnio\u2019n rhy dda i fod yn wir, yn enwedig rhai sy\u2019n gofyn i ti dalu am hyfforddiant neu offer ymlaen llaw. Ymchwilia\u2019n drylwyr i\u2019r cwmni.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Diweddarwch eich meddalwedd<\/h3>\n\n\n\n<p>Mae diweddaru meddalwedd dy ddyfeisiau yn sicrhau dy fod yn aros yn ddiogel rhag sgamiau. Mae diweddariadau yn uwchraddio diogelwch dy ddyfais i\u2019w warchod yn erbyn sgamwyr, felly mae\u2019n hollbwysig sicrhau dy fod yn gwneud hyn yn gyson.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Angen siarad gyda rhywun am sgamiau?<\/h3>\n\n\n\n<p>Poeni am sgamiau? Angen siarad \u00e2 rhywun? Os wyt ti\u2019n poeni amdanat ti dy hun neu rywun arall, neu os wyt ti wedi cael dy sgamio, mae Meic yma i helpu. Rydym yn cynnig cefnogaeth am ddim a chyfrinachol i blant a phobl ifanc yng Nghymru. Gallwn ddarparu gwybodaeth, cyngor ac eiriolaeth i helpu ti gael y cymorth ti angen. Rydym ar gael o 8yb tan hanner nos bob dydd, dros y ff\u00f4n, neges destun neu Whatsapp a <a href=\"https:\/\/www.meiccymru.org\/cym\/\">sgwrs ar-lein<\/a>.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mae\u2019r we yn rhan fawr o\u2019n bywydau ni. Rydym yn cysylltu gyda ffrindiau ar gyfryngau cymdeithasol ac yn chwilio am fargeinion ar-lein. Ond, mae sgamwyr yn defnyddio\u2019r we hefyd. Dyma ganllaw ar sut i wneud y defnydd gorau o\u2019r we, osgoi sgamiau a chadw&#8217;n yn ddiogel ar-lein.\u00a0 Cynigion sy\u2019n rhy dda i fod yn wir [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4809,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1659,24],"tags":[2564,2565,2567,2566,2378],"class_list":["post-6331","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-diogelwch-ar-lein","category-online-safety","tag-diogelwch","tag-gwe-rwydo","tag-scam-2","tag-sgamwyr","tag-twyll"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Osgoi Sgamiau a Chadw\u2019n Ddiogel Ar-lein - Meic<\/title>\n<meta name=\"description\" content=\"Mae\u2019r we yn rhan fawr o\u2019n bywydau ni. 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