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r/netsec · u/AnywhereOk3723 · 2d ago

Encrypted DNS in 2026: DoH, DoT, DoQ and DoH3 protocol comparison — including DNS hijacking attack vectors and what each protocol actually prevents

The security angle on encrypted DNS is often oversimplified. DoH prevents ISP-level snooping and basic DNS hijacking, but doesn't protect against a compromised resolver. DoT is easier to detect and block, which has real …

r/cybersecurity · u/Much_Preparation_832 · 17h ago

Disgruntled 0-day hunter 'humiliated' by Microsoft pledges 'bone shattering drop' as Redmond calls cops

https://www.theregister.com/security/2026/05/28/microsoft-0-day-feud-escalates-as-researcher-threatens-another-windows-exploit-dump/5248085

r/netsec · u/technadu · 4d ago

Threat Intel: ShinyHunters Leaks 9.4GB Database of 7-Eleven Franchisee Systems Post-Extortion Refusal

Overview: On May 24, 2026, the data breach notification service Have I Been Pwned (HIBP) integrated a dataset originating from an April 2026 extortion campaign targeting 7-Eleven. The breach, attributed to the threat act…

r/selfhosted · u/bz386 · 4w ago

Patch your servers, peeps, new Linux kernel vulnerability just dropped

CopyFail just dropped, it's a new Linux kernel vulnerability that gives attackers root privileges. https://arstechnica.com/security/2026/04/as-the-most-severe-linux-threat-in-years-surfaces-the-world-scrambles/ Debian ha…

r/cybersecurity · u/Technical-Natural343 · 2w ago

Interview for AI security engineer position at a fortune 500 company

Just had an interview for an AI security engineer position for a large manufacturer. Here is what they are looking for. Secure RAG pipelines Adversarial testing MITRE Atlas framework Projects SecAI+ was respected. Decent…

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