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Hacking

Posts from Security Cipher.

PIYUSH KUMAWAT · July 19, 2026

Web Cache Poisoning in 2026: A Practical Playbook (One Request, Every Victim)

Most web bugs hit one victim at a time. Web cache poisoning is different, and that is exactly why it is worth…

PIYUSH KUMAWAT · July 15, 2026

LLM Red Teaming in 2026: A Practical garak + PyRIT Workflow

You shipped an LLM feature. A support chatbot, a “summarize this document” button, an agent that can call tools. Now the obvious…

PIYUSH KUMAWAT · July 14, 2026

Indirect Prompt Injection in 2026: Hacking AI Through the Content It Reads

Most people picture prompt injection as someone typing “ignore your instructions” into a chatbot. That is the direct kind, and it is…

PIYUSH KUMAWAT · July 13, 2026

Hacking GraphQL APIs in 2026: Introspection, BOLA, and Batching Attacks

GraphQL is a gift to attackers. One endpoint, usually /graphql, that speaks a typed, self-describing language and will happily tell you every…

PIYUSH KUMAWAT · July 12, 2026

Actively Exploited CVEs in June 2026: A Practical Patch-Now Briefing (SimpleHelp, Citrix, ColdFusion, Defender)

June 2026 was a brutal month for anyone who runs internet-facing infrastructure. A run of critical, actively-exploited vulnerabilities landed one after another,…

PIYUSH KUMAWAT · July 10, 2026

IDOR Hunting in 2026: A Practical Playbook for Finding Broken Access Control

IDOR is the bug that pays rent for a lot of bug bounty hunters, and it is still the one developers ship…

PIYUSH KUMAWAT · July 8, 2026

MCP Server Security (2026): A Practical Pentester’s Testing Playbook

If you are running Cursor, Claude Desktop, Windsurf, or a home-grown agent stack in 2026, you almost certainly have MCP servers in…

PIYUSH KUMAWAT · June 30, 2026

Agentjacking: How Attackers Hijack AI Coding Agents Like Cursor and Claude

Agentjacking lets attackers hijack AI coding agents like Cursor, Claude Code and Codex via poisoned error data. Here's how it works and…

PIYUSH KUMAWAT · June 21, 2026

AutoJack: How One Web Page Can Hijack Your AI Agent and Own Your Machine

Microsoft's AutoJack shows how a single malicious web page can hijack an AI agent and run code on your machine. Here's how…

PIYUSH KUMAWAT · February 22, 2024

LLM Agents can Autonomously Hack Websites ?

Based on the research paper (https://arxiv.org/pdf/2402.06664.pdf), the study delves into the autonomous hacking capabilities of Large Language Models (LLMs), particularly focusing on…