initial-access-brokers

initial-access-brokers is a skill for Claude Code from Liberty91LTD/cti-skills. It costs 51 tokens per session (6,697 once invoked), scanned A, original, MIT.

A reference guide about initial access brokers, criminals who break into company networks and sell that access to other attackers. It covers their role in ransomware operations, marketplaces, access types, and pricing factors.

In plain words
What is it for?
Use it when researching initial access brokers, access listings, broker identities, ransomware-related access sales, or how access is packaged and priced.
Why use it?
It helps explain a part of the cybercrime supply chain that is often unfamiliar. Understanding it supports research into how attackers obtain and resell network access.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: positional $N argument.

Good fit Use it when researching initial access brokers, access listings, broker identities, ransomware-related access sales, or how access is packaged and priced.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/liberty91ltd/cti-skills/initial-access-brokers
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Liberty91LTD/cti-skills --skill initial-access-brokers
Clone the repo
git clone --depth 1 https://github.com/Liberty91LTD/cti-skills

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for initial-access-brokers

README.md
[![agentmods](https://agentmods.dev/badge/skills/liberty91ltd/cti-skills/initial-access-brokers/github.svg)](https://agentmods.dev/skills/liberty91ltd/cti-skills/initial-access-brokers)
Your own site
<a href="https://agentmods.dev/skills/liberty91ltd/cti-skills/initial-access-brokers"><img src="https://agentmods.dev/badge/skills/liberty91ltd/cti-skills/initial-access-brokers/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for initial-access-brokers

Your own site · 80×15
<a href="https://agentmods.dev/skills/liberty91ltd/cti-skills/initial-access-brokers"><img src="https://agentmods.dev/badge/skills/liberty91ltd/cti-skills/initial-access-brokers.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,697 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00051 $0.06697
Opus 5.5 $0.00020 $0.02679
Sonnet 5.5 $0.00010 $0.01339
Haiku 4.5 $0.00005 $0.00670

Measured 1mo ago against content hash 736950165631, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

initial-access-brokers scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/initial-access-brokers/SKILL.md · 207 lines

How it starts

The opening of the file, as written. The whole thing — 207 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Initial Access Brokers

Executive Summary

Initial Access Brokers (IABs) are specialized cybercriminal actors who gain unauthorized access to corporate networks and sell or hand that access to other threat actors, most commonly ransomware and data-extortion crews. They decouple the intrusion phase from the monetization phase, which lets buyers skip the slowest part of an attack. The model is unchanged; the venues, the prices and the way vendors track brokers all changed materially between 2025 and 2026.

The forum landscape the market relied on has been broken up. The alleged administrator of XSS was arrested in Kyiv on 22 July 2025 and the forum's clear-web domains were seized; a site under the XSS name returned under a new administrator, but former moderators left to found DamageLib and trust in XSS has not recovered [9][10][11]. BreachForums lost its domains to an FBI seizure in October 2025 and has since split into competing successors [12]. RAMP, the one major forum that openly permitted ransomware advertising, was seized by the FBI on 28 January 2026 and its administrator said he would not rebuild it [13][14]. Of the three forums this cell previously named as the core venues, only Exploit is still operating without a known disruption. Ransomware actors have dispersed to newer forums such as Rehub and T1erOne rather than consolidating on one successor, and both XSS and Exploit have restated their bans on ransomware activity [13].

Pricing data is vendor-specific and the two most recent Rapid7 datasets are not directly comparable. For the second half of 2024 Rapid7 reported an average base price of just over $2,700 across Exploit, XSS and BreachForums, with nearly 40% of offers priced between $500 and $1,000 [15][16]. For 2025, with DarkForums and RAMP added to the dataset, Rapid7 reported an average base price of $113,275, which it attributes largely to very high-value listings on DarkForums [17]. Most listings bundle a privilege level with the access vector: 71.4% in the 2024 data, and domain admin in roughly a third of 2025 listings that stated a privilege [16][17].

Read the full file on GitHub · 207 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago Changed · +63 lines 736950165631
  2. 2mo ago First seen · 144 lines · 51 tokens per session scan A df26aa3b86e9

Subscribe to this mod's changes

initial-access-brokers is a skill published in the GitHub repository Liberty91LTD/cti-skills (36 stars, last pushed 4d ago), licensed MIT. It adds 51 tokens to every session and 6,697 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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