The CyberSec Guru

Post-Quantum Encryption

Post-Quantum Encryption: Why the US Is Racing Against a Clock It Can’t See

The CyberSec Guru

Post-quantum encryption is no longer theoretical. Full technical breakdown of ML-KEM, FIPS 203/204/205, the HNDL threat, and why the US is migrating

Alibaba Distilled Claude AI

Alibaba Stole Claude’s Brain. Here’s Exactly How They Did It.

The CyberSec Guru

How Alibaba-linked operators ran 25,000 fake accounts and 28.8M Claude exchanges to steal Anthropic's AI capabilities via distillation

ShinyHunters MSG Breach

ShinyHunters MSG Breach: 26M Records, Facial Recognition Dossiers, and a Vishing Attack That Started With a Phone Call

The CyberSec Guru

ShinyHunters leaked 45GB of Madison Square Garden data after a vishing attack on Microsoft Entra exposed 26 million records, biometric facial recognition profiles, and secret activist dossiers

Miasma Returns

Miasma Returns: Leo Platform npm Packages Hit in New Shai-Hulud Supply Chain Wave

The CyberSec Guru

A compromised developer account infected 23 Leo Platform npm packages with Miasma malware, using Phantom Gyp binding.gyp execution to compromise 320+ GitHub repositories. Full IOC list inside

Subnetting and CIDR Notation

Subnetting and CIDR Notation: The Complete Technical Guide

The CyberSec Guru

A deep-dive technical guide to subnetting and CIDR notation. Subnet masks, binary math, VLSM, route aggregation, and practical IP design in detail

Deutsche Bahn GSM-R Outage

Germany’s Entire Rail Network Went Dark Last Night. Here’s What Happened.

The CyberSec Guru

A GSM-R communications failure brought every Deutsche Bahn train in Germany to a halt late Tuesday. Here's what happened, what's still unknown, and why it matters

Eight-year-old Samsung Knox flaw

Eight-year-old Samsung Knox flaw exposed Galaxy devices to kernel attacks

The CyberSec Guru

Samsung patched CVE-2026-20971, a long-running Knox PROCA use-after-free flaw that affected Galaxy devices and could lead to kernel memory corruption

KDDI Data Breach

KDDI Breach Exposes Up to 14.22 Million Email Records Across Six Japanese ISPs

The CyberSec Guru

KDDI's 2026 data breach exposed up to 14.22M email credentials across six ISPs - BIGLOBE, @nifty, JCOM, and more. What happened and what's next

CVE-2026-55200 Critical libssh2 RCE Flaw

A critical flaw in libssh2 puts SSH clients at remote code execution risk

The CyberSec Guru

CVE-2026-55200 is a CVSS 9.2 heap overflow in libssh2 enabling pre-auth RCE on all versions through 1.11.1. Fix: commit 97acf3d

Tata Electronics Breach

Tata Electronics Confirms Cyberattack as World Leaks Posts 630GB of Alleged Apple and Tesla Trade Secrets

The CyberSec Guru

Tata Electronics confirmed a cyberattack after World Leaks posted 630GB of alleged Apple and Tesla files including iPhone specs and Tesla trade secrets