[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f1x8tT7BPPa7HR3dtzCjMLQ3fPxyR8SRp_BM2DNNDtyg":3},{"article":4,"iocs":33},{"id":5,"title":6,"slug":7,"summary":8,"ai_summary":9,"brief":10,"full_text":11,"url":12,"image_url":13,"published_at":14,"ingested_at":15,"relevance_score":16,"entities":17,"category_id":21,"category":22,"article_tags":25},"e9e72bb1-eb0d-4eff-b8dc-32313587d07a","CSS: The Hidden Threat Lurking in Your Inbox","css-the-hidden-threat-lurking-in-your-inbox-fd8aaf","CSS was once just about design. Now researchers warn it's powerful enough to exfiltrate data from webmail — and some vendors aren't prepared.","Researchers have discovered that Cascading Style Sheets (CSS), traditionally used for web design, can now be exploited to exfiltrate sensitive data from webmail clients. This technique leverages CSS features to leak information, posing a significant threat to user privacy and data security. Some webmail vendors are reportedly unprepared for this emerging attack vector.","CSS can now exfiltrate data from webmail, researchers warn.",null,"https:\u002F\u002Fwww.darkreading.com\u002Fcyberattacks-data-breaches\u002Fcss-hidden-threat-lurking-inbox","https:\u002F\u002Feu-images.contentstack.com\u002Fv3\u002Fassets\u002Fblt6d90778a997de1cd\u002Fblteab809ef662786f0\u002F6a72695ca3f8037e14ce6b0b\u002Femail1800_alubalish_GettyImages-184320446.jpg?width=720&quality=80&disable=upscale","2026-08-05T19:47:55+00:00","2026-08-05T22:00:24.883766+00:00",7,[18],{"name":19,"type":20},"CSS","technology","80544778-fabb-4dcd-aa35-17492e5dcf4f",{"id":21,"icon":11,"name":23,"slug":24},"Vulnerabilities","vulnerabilities",[26,31],{"category":27},{"id":28,"icon":11,"name":29,"slug":30},"614132b8-5837-4952-b8b5-c6c9a32a1d85","Privacy","privacy",{"category":32},{"id":21,"icon":11,"name":23,"slug":24},[]]