OpenAI Launches GPT-5.4-Cyber with Expanded Access for Security Teams
2026-04-15T07:24:15Z•39a3846539d8e7c9ec6d40ff57a4f1ea510fa417d2aea9afbd314d002e4b0ad8
RATactive-exploitationad-fraudai-securityandroidchrome-extensionscisa-kevcode-signinggithub-actionside-compromisemalwarememory-safetyphishingremote-code-executionrustsdk-vulnerabilitysupply-chainvulnerabilityzero-day
What happened
Aggregate of The Hacker News items (April 2026) highlighting multiple high-impact security events: new critical and actively exploited vulnerabilities (ShowDoc CVE-2025-0520, Marimo CVE-2026-39987, Adobe Acrobat CVE-2026-34621, Composer command-injection CVE-2026-40176, and a CISA-added Fortinet/MS/Adobe KEV CVE-2026-21643); several supply-chain incidents and code-signing risks (OpenAI macOS signing/Axios, CPUID trojanized downloads, backdoored Smart Slider update); widespread malware and fraud campaigns (Mirax Android RAT via Meta ads, STX RAT distribution, JanelaRAT targeting banks, W3LL/phs
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- the_hacker_news
- Record identifier
- 39a3846539d8e7c9ec6d40ff57a4f1ea510fa417d2aea9afbd314d002e4b0ad8
- Enrichment time
- 2026-04-15T07:24:15Z
- AI-assisted enrichment
- Yes
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