Transmission Control Protocol (TCP) vulnerabilities

Best of 2025: NOT-So-Great Firewall: China Blocks the Web for 74 Min.

AndyC 1 January 2026

HTTPS connections on port 443 received forged  replies.Chinese web users couldn’t access websites outside the People’s Republic yesterday. The outage...

This month in security with Tony Anscombe – December 2025 edition

AndyC 30 December 2025

As 2025 draws to a close, Tony looks back at the cybersecurity stories that stood out both in December and across the whole of this...

A brush with online fraud: What are brushing scams and how do I stay safe?

AndyC 24 December 2025

Have you ever received a package you never ordered? It could be a warning sign that your data has been compromised, with more fraud to...

Revisiting CVE-2025-50165: A critical flaw in Windows Imaging Component

AndyC 23 December 2025

ESET researchers examined CVE‑2025‑50165, a serious Windows vulnerability described to grant remote code execution by merely opening a specially crafted JPG file – one of...

LongNosedGoblin tries to sniff out governmental affairs in Southeast Asia and Japan

AndyC 19 December 2025

In 2024, ESET researchers noticed previously undocumented malware in the network of a Southeast Asian governmental entity. This led us to uncover even more new...

ESET Threat Report H2 2025

AndyC 17 December 2025

ESET Research A view of the H2 2025 threat landscape as seen by ESET telemetry and from the perspective of ESET threat detection and research...

Black Hat Europe 2025: Was that device designed to be on the internet at all?

AndyC 16 December 2025

Business Security Behind the polished exterior of many modern buildings sit outdated systems with vulnerabilities waiting to be found Tony Anscombe 12 Dec 2025 • ...