Author: Prabhu Kalyan Samal

This author has written 392 articles
Hmmnm
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Hmmnm

Hands-on cybersecurity tutorials, CVE breakdowns, and guided learning paths. Every technique is explained, tested, and paired with its mitigation — so you learn the attack and the defense together.

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Read more about the article SMBGhost CVE-2020-0796: Wormable Code in Windows 10 SMBv3

SMBGhost CVE-2020-0796: Wormable Code in Windows 10 SMBv3

On 11 March 2020, Microsoft shipped a fix for CVE-2020-0796, a wormable remote code execution flaw in how Windows 10 and Windows Server handle compressed SMBv3 packets. An attacker could send a specially crafted compressed packet and trigger a buffer overflow before authentication, exactly the class of bug security people fear could be chained into self-spreading malware. Researchers named it SMBGhost, published proof-of-concepts within days, demonstrated local privilege escalation chains, and Microsoft followed with an out-of-band patch update on 12 March. This technical retrospective covers the flaw mechanics, the compression workaround, the patch wave, and why the wormable nightmare never fully materialized.

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Read more about the article When Hackers Hunted the WHO: Cyberattacks in a Pandemic’s First Weeks

When Hackers Hunted the WHO: Cyberattacks in a Pandemic’s First Weeks

On 24 March 2020, Reuters reported that hackers had stood up a near-identical malicious imitation of the World Health Organization’s internal email portal, infrastructure aimed at stealing passwords from staffers coordinating the global pandemic response. The same reporting documented that around 450 active WHO email addresses and passwords, plus thousands more belonging to people working on the COVID-19 response, had been leaked online. It was not an isolated incident but part of a documented surge in targeting of health bodies that spring. This piece reconstructs the verified incidents of March 2020 and the wider lesson that crisis response organizations are priority intelligence targets.

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Read more about the article Marriott’s Second Breach: 5.2 Million Guest Records Exposed

Marriott’s Second Breach: 5.2 Million Guest Records Exposed

At the end of March 2020, Marriott disclosed its second major breach in two years: the login credentials of two franchise properties had been abused in late February 2020 to siphon 5.2 million guest records, including names, addresses, phone numbers, birthdays, loyalty details, and in some cases travel itineraries and room preferences. Unlike the 2018 Starwood catastrophe that exposed up to 383 million records, this intrusion was caught and contained within weeks, but it reignited regulatory scrutiny on both sides of the Atlantic. This retrospective covers the intrusion path, the data involved, the disclosure timing, and the aftermath for one of hospitality’s biggest names.

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Read more about the article The FBI’s COVID-19 Warning: IC3 and the Scam Surge of March 2020

The FBI’s COVID-19 Warning: IC3 and the Scam Surge of March 2020

On 20 March 2020, the FBI’s Internet Crime Complaint Center published a public service announcement warning that cyber criminals were exploiting the COVID-19 pandemic at scale: phishing lures referencing stimulus payments and fake cures, malicious apps, and infrastructure spoofing health authorities. It was one node in a broader wave of official guidance that spring, with CISA and the UK’s NCSC issuing joint advice on pandemic-era remote work and video conferencing security, and IC3’s later reporting would show complaint volumes surging through 2020. This retrospective explains what the warning said, what the threat landscape actually looked like that spring, and how a global crisis became an attack-surface multiplier.

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Read more about the article Agentic AI Security: Attack Surface in Autonomous Systems
Agentic AI Security: Attack Surface in Autonomous Systems

Agentic AI Security: Attack Surface in Autonomous Systems

A practical guide to agentic AI security covering goal hijacking, tool misuse, identity and privilege abuse, memory poisoning, multi-agent trust issues, and defense frameworks for autonomous AI systems.

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Read more about the article Phishing Evolution: From Email Scams to AI-Powered Attacks
Phishing Evolution: From Email Scams to AI-Powered Attacks

Phishing Evolution: From Email Scams to AI-Powered Attacks

Trace the evolution of phishing attacks from crude 1990s email scams to AI-powered deepfake campaigns. Discover how attackers leverage machine learning and automation to create convincing social engineering attacks.

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Read more about the article How to Pentest OT Networks Without Halting Production
OT pentest Purdue model zones with guardrails

How to Pentest OT Networks Without Halting Production

Oldsmar proved an intruder can move a plant setpoint from a browser tab. This is the safe method: passive-first discovery, read-only active testing, writes proven on clone benches, and findings ranked in downtime currency — not CVSS.

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Read more about the article Identity Security: Modern Attacks on Users, Sessions & Trust
Identity Security: Modern Attacks on Users, Sessions & Trust

Identity Security: Modern Attacks on Users, Sessions & Trust

How identity became the new perimeter in modern cybersecurity. Explore MFA bypass techniques, OAuth consent phishing, device code attacks, token theft, and defense strategies for identity-centric security.

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