Security & Testing Agent Skills for DeepSeek Harness

Mutation testing to verify test quality with Stryker, mutmut, or go-mutesting

Configure Navan admin roles, travel policies, approval workflows, and

Use when deciding whether a security project belongs at NDSS — the Network and Distributed System Security Symposium — or should route to…

.NET testing patterns — xUnit conventions, integration tests with WebApplicationFactory over Testcontainers, NSubstitute mocking, and test…

Reduce and fence off a network's exposed attack surface so discovery and exploitation have little to reach.

Dense description covering ARP spoofing, LLMNR/NBT-NS/mDNS poisoning, DNS poisoning, MITM attacks, VLAN hopping, DHCP attacks, 802.1X/NAC…

Demonstrate data exfiltration and C2 over permitted egress channels during an authorized network assessment — showing that with…

Harden the outbound network boundary against exfiltration and C2 over permitted channels.

Detect and contain exploitation of exposed network services.

Move laterally from an initial foothold to additional hosts during an authorized assessment.

You are helping a penetration tester perform network reconnaissance and service

Demonstrate abuse of exposed remote-access services during an authorized network assessment — gaining a foothold through internet-facing…

Harden remote-access services against external-foothold abuse.

Enumerate reachable hosts, open ports, and running services during an authorized network assessment.

Gain a foothold by exploiting an exposed, vulnerable network service during an authorized assessment.

Assess a network service's TLS/SSL configuration for weaknesses during an authorized assessment.

Bring a network service's TLS to a modern, hardened baseline and keep it there.

Agent Human Layer for ordinary Human-to-Agent repository work.

NextAuth.js (Auth.js) configuration including providers, adapters, session management, callbacks, and JWT handling.

Audit an Effect codebase for silent error swallowing -- catchAll patterns that collapse errors into sentinel values (null, [], false…

Nuxt 3 auth patterns with @clerk/nuxt - middleware, composables, server