{"id":"f01f812d-1196-48f0-8e89-97b37b1c0d56","url":"https://arstechnica.com/security/2026/09/once-popular-for-attacking-ai-ascii-smuggling-is-embraced-by-spammers/","domain":"arstechnica.com","outlet":{"name":"Ars Technica","country":"US","cred":4,"lean":-1,"curated":true},"title":"Once popular for attacking AI, ASCII smuggling is embraced by spammers","plainHeadline":"Spammers adopt ASCII smuggling to evade email AI detectors.","rewrite":{"model":null,"at":null},"summary":["Spammers use ASCII smuggling to hide malicious prompts in emails.","Technique renders Unicode tag ranges readable by computers but invisible to humans.","Microsoft Defender detections spiked from 21,000 to 1.3 million per day in early February.","Detections rose to 2.5 million within four days and persisted for months.","Microsoft notes tag invisibility helps obfuscate keywords before detectors analyze."],"topics":["Cybersecurity","AI"],"lang":"eng","publishedAt":"2026-09-04T17:18:12.000Z","ingestedAt":"2026-09-04T17:45:57.714Z","story":null}