What does the Hyacinthe skill do?

Lock down email and collaboration: DMARC at reject, a tuned gateway, account-takeover detection, and a tenant baseline that kills whole attack classes. Load it once into Claude Projects and you get a configured Email & Collaboration Security Engineer without re-explaining context at the start of every session. This skill is for authorized, defensive security work only. Validate findings in your own environment, follow your rules of engagement and written authorization, and confirm current framework, vendor, and regulatory specifics before you act on them.

How do I install this skill file?

Download the .skill package (it contains SKILL.md), paste the contents into Claude Projects Instructions or your AI's system prompt, add your own context and start your first session. Works with Claude, ChatGPT, or any AI chat that accepts system prompts.

Which AI tools does this skill work with?

Works with Claude (recommended), ChatGPT, Gemini, Perplexity and Copilot, and any AI chat that accepts system prompts. Claude Projects gives the best results.

What is included in this download?

One .skill package delivered instantly after purchase: the full SKILL.md role configuration plus a worked-example file with a real scenario so you see the quality before you rely on it. No subscription, yours permanently.

How is this different from using Claude without the Hyacinthe skill?

Without a skill file your AI starts every session as a general assistant. With Hyacinthe loaded it applies Email & Collaboration Security Engineer methodology from the first message, with consistent quality every time. This skill is for authorized, defensive security work only. Validate findings in your own environment, follow your rules of engagement and written authorization, and confirm current framework, vendor, and regulatory specifics before you act on them.

Email & Collaboration Security AI Skill

Name: Hyacinthe — Email & Collaboration Security Engineer AI Skill
Brand: KissMySkills
Price: 14.99 USD
Availability: InStock

Hyacinthe — Email & Collaboration Security Engineer AI Skill

$14.99

Hyacinthe — Email & Collaboration Security Engineer AI Skill

$14.99 this skill vs $110+/hr, hiring one

⚡ Instant download ◆ Claude & ChatGPT ∞ Keep forever

Instant download · 30-day money-back guarantee. Pay once, keep forever — no subscription. Refund policy

Lock down email and collaboration: DMARC at reject, a tuned gateway, account-takeover detection, and a tenant baseline that kills whole attack classes.

SPF, DKIM and DMARC to reject without breaking senders
Gateway tuning for phishing, BEC and payroll diversion
Microsoft 365 and Workspace account-takeover detection
External sharing, guest access and tenant hardening baseline

IT and security teams stuck at DMARC p=none with a phishing queue nobody triages and sharing sprawl nobody measured.An email and collaboration security engineer bills $110+/hr, this is one file, yours forever.

// what's inside

Drop Hyacinthe into Claude and get an email security engineer who gets you to DMARC reject without breaking payroll, and finds the mailbox rule hiding the fraud.

Hyacinthe defends the channel most breaches still start in: email authentication done properly with SPF flattening and the ten-lookup limit, DKIM key rotation and selector hygiene, and DMARC taken from none to reject without cutting off a legitimate vendor, plus BIMI; gateway and cloud-native tuning on Microsoft Defender for Office 365, Proofpoint, Mimecast and Abnormal; phishing, spear-phishing and business email compromise including invoice redirect and payroll diversion; account takeover detection in Microsoft 365 and Google Workspace covering illicit OAuth consent grants, forwarding rules and the inbox rules that hide the fraud; attachment and URL detonation and its bypasses; collaboration security across Teams, Slack, SharePoint, OneDrive and Google Drive with external sharing sprawl and guest access; the phish-report triage queue; quarantine and release governance; and the tenant hardening baseline that removes whole classes of attack.

What you get

→SPF, DKIM and DMARC to reject without breaking senders
→Gateway tuning for phishing, BEC and payroll diversion
→Microsoft 365 and Workspace account-takeover detection
→External sharing, guest access and tenant hardening baseline

📄 hyacinthe-email-collaboration-security-engineer.skill Under 2 min install Works with Claude, ChatGPT & any AI chat

How to install

Download the .skill package, open Claude, paste SKILL.md into your Project Instructions or system prompt, describe your requirement, and Hyacinthe builds the answer. Includes a full worked example so you see exactly what you get.

hyacinthe-email-collaboration-security-engineer.skill

# Hyacinthe - Email & Collaboration Security Engineer

You are Hyacinthe, a senior email and collaboration security engineer. You take DMARC to reject deliberately, and you look for the inbox rule before you look for the malware.

## How you work
1. Inventory every legitimate sender before touching a DMARC policy
2. Move none to quarantine to reject in staged percentages with monitoring
3. Tune the gateway for BEC and payroll patterns, not just attachments
4. Detect account takeover: consent grants, forwarding, hiding rules
5. Harden the tenant and the sharing model so classes of attack disappear

Validate policy changes against your own mail flow before enforcing. Coordinate finance process changes with the business.

Excerpt from the actual file you'll download.

// try it

prompt

$We got hit by an invoice redirect and we are still on DMARC p=none. Give me the plan.

Hyacinthe returns the sender inventory and a staged DMARC path to reject with the quarantine percentages and the vendors that will break, the gateway policy tuning for BEC patterns, the account-takeover detections for consent grants and inbox rules, a collaboration sharing and guest-access cleanup, quarantine governance, and the tenant hardening baseline in apply order.

// how to install Under 2 minutes

Four steps. Any AI chat.

01
Download the file
After checkout, the download link lands in your inbox. Save the file anywhere on your device.
02
Open your AI chat
Claude, ChatGPT, Gemini, Grok, or Copilot — whichever one you already use.
03
Paste the file contents
Drop it into the system prompt, Project instructions, or custom instructions field.
04
Start working
Your AI is now configured as a specialist. Ask it anything inside its domain.