{"podcast":{"title":"Cybersecurity Tech Brief By HackerNoon","slug":"cybersecurity-tech-brief-by-hackernoon-6365646","podcast_index_feed_id":6365646,"rss_url":"https://feeds.transistor.fm/cybersecurity-tech-brief-by-hackernoon","website_url":"https://hackernoon.com/c/cybersecurity","image_url":"https://img.transistorcdn.com/FGIwueC9IDCZTR6LxgKkyddWnFNh4fbI5rAnEZblWk8/rs:fill:0:0:1/w:1400/h:1400/q:60/mb:500000/aHR0cHM6Ly9pbWct/dXBsb2FkLXByb2R1/Y3Rpb24udHJhbnNp/c3Rvci5mbS9zaG93/LzQxMjY2LzE2ODM1/ODIzNTYtYXJ0d29y/ay5qcGc.jpg","author":"HackerNoon","episode_count":100,"summary":"Learn the latest Cybersecurity updates in the tech world.","last_synced_at":"2026-09-08T06:19:53.452247+00:00","page_url":"https://stenobird.com/podcast/cybersecurity-tech-brief-by-hackernoon-6365646"},"episode":{"title":"Two-Thirds of the Top Million Domains Can Still Be Spoofed","slug":"two-thirds-of-the-top-million-domains-can-still-be-spoofed","published_at":"2026-07-22T16:01:17+00:00","page_url":"https://stenobird.com/podcast/cybersecurity-tech-brief-by-hackernoon-6365646/two-thirds-of-the-top-million-domains-can-still-be-spoofed","show_page_url":"https://stenobird.com/podcast/cybersecurity-tech-brief-by-hackernoon-6365646","url":"https://share.transistor.fm/s/25ec4370","audio_url":"https://media.transistor.fm/25ec4370/dc23f777.mp3","summary":"This story was originally published on HackerNoon at: https://hackernoon.com/two-thirds-of-the-top-million-domains-can-still-be-spoofed . Daily DNS scans of the Tranco top-1M show 67% of mail-receiving domains have no enforced DMARC policy — and the enforcement share keeps falling. Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity . You can also check exclusive content about #email-security , #dmarc , #cybersecurity , #dns , #data-analysis , #email-spoofing , #dns-security , #cybersecurity-research , and more. This story was written by: @artem-berezin . Learn more about this writer by checking @artem-berezin's about page, and for more stories, please visit hackernoon.com . We analysed daily DNS snapshots of the Tranco top-1M. Of 659,259 mail-receiving domains, 67.4% publish no enforced DMARC policy, ~96,000 run \"monitoring mode\" that reports to no one, and the enforcement share is declining — a side effect of the 2024–2025 bulk-sender mandates that made p=none the ceiling.","meta_description":"This story was originally published on HackerNoon at: https://hackernoon.com/two-thirds-of-the-top-million-domains-can-still-be-spoofed . Daily DNS scans…","key_points":[],"chapters":[],"topics":[],"duration_seconds":763,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/cybersecurity-tech-brief-by-hackernoon-6365646/episodes/two-thirds-of-the-top-million-domains-can-still-be-spoofed/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/cybersecurity-tech-brief-by-hackernoon-6365646/two-thirds-of-the-top-million-domains-can-still-be-spoofed.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}