SMB Security Guide
End-to-end blueprint for small and mid-sized businesses to stand up a working security program without enterprise budget.
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Every whitepaper, playbook, and reference we've published — direct download. No form, no CRM hookup, no follow-up sales call.
HS ebooks30
Curated links17
Categories14
HorizonShield ebooks
Penetration Testing Checklist
Operational checklist for scoping, executing, and reporting external + internal pentests for SMB environments.
Download PDFIncident Response Playbook
Tabletop-tested playbook covering the first 30 minutes through post-incident review. Real templates, not theory.
Download PDFDORA Compliance Guide
EU Digital Operational Resilience Act mapped to controls and evidence — for financial entities and their ICT providers.
Download PDFCloud Security Hardening
AWS/Azure/GCP baseline hardening with infrastructure-as-code patterns, IAM least-privilege, and CSPM coverage.
Download PDFZero Trust Architecture
Pragmatic ZT roadmap for SMBs: identity, device, network, segmentation, with vendor-agnostic decision trees.
Download PDFThreat Hunting & SOC Operations
Hypothesis-driven hunting paired with running a modern SOC: rules, runbooks, metrics, hand-offs.
Download PDFDevSecOps Implementation
Shift-left in practice — SAST, DAST, SCA, secrets, signing, SBOM, supply-chain. Pipeline patterns that don't slow ship cadence.
Download PDFWeb Security
OWASP Top 10 + Top 25 in production: attack patterns, defensive headers, secure coding for full-stack engineers.
Download PDFNetwork Security
Segmentation, firewall rule discipline, IDS/IPS placement, and the realistic NAC for environments without enterprise switching.
Download PDFLinux and Systems
Linux internals for security operators — process trees, syscalls, eBPF basics, audit framework, kernel hardening.
Download PDFSocial Engineering
Human-layer attacks — phishing, vishing, OSINT-driven pretexting — and the controls (training + technical) that actually work.
Download PDFMalware Analysis
Static + dynamic analysis with sandbox patterns. Practical reverse engineering for IR responders, not just researchers.
Download PDFForensics
Disk and memory forensics for IR — chain of custody, imaging, Volatility, timeline reconstruction.
Download PDFCryptography
Applied crypto for engineers — TLS, signing, key rotation, post-quantum considerations, common pitfalls.
Download PDFCompliance and Audit
SOC 2 Type II, ISO 27001, PCI DSS v4 mapped to control libraries with evidence collection automation.
Download PDFAI / LLM Security
Securing AI and LLM deployments — prompt injection, data leakage, model supply chain, and operator-side controls.
Download PDFIdentity & Access Management
IAM essentials — directory design, federation, MFA, conditional access, and joiner/mover/leaver flows.
Download PDFOT / ICS Security
Operational technology and industrial control system security — Purdue model, segmentation, asset discovery, and incident handling.
Download PDFThreat Intelligence Operations
Building a CTI practice — collection, correlation, IOC pipelines, MISP integration, and intel-driven detection.
Download PDFMobile Security
Mobile security across iOS and Android — app testing methodology, MASVS, SDK risks, and enterprise MDM controls.
Download PDFKubernetes Security
Kubernetes hardening — RBAC, network policy, admission controllers, runtime detection, and supply chain integrity.
Download PDFBug Bounty
Bug bounty programme operations — scope, triage, payout policy, hacker comms, and integration with internal AppSec.
Download PDFSecurity Architecture for Startups
Right-sized security architecture for early-stage startups — what matters at seed, Series A, and post-product-market-fit.
Download PDFNIST Cybersecurity Framework (CSF 2.0)
The full NIST CSF 2.0 reference — Govern, Identify, Protect, Detect, Respond, Recover. Framework foundation for risk-aligned security programmes.
Download PDFNIST SP 800-53 Rev. 5
Security and Privacy Controls for Information Systems — the canonical control catalog used by federal and regulated industries.
Download PDFNIST SP 800-115 Technical Guide to Information Security Testing
NIST guide to information security testing and assessment — pen-testing methodology, assessment lifecycle, and reporting.
Download PDFOWASP Web Security Testing Guide v4
OWASP Testing Guide — comprehensive web application security testing methodology and checklist.
Download PDFThe Linux Command Line
Free reference book by William Shotts — Linux shell, scripting, and command-line proficiency for security practitioners.
Download PDFCybersecurity Handbook
Plain-language cybersecurity handbook covering fundamentals, threats, and practical defenses for SMBs.
Download PDFCurated external resources
NIST Frameworks
5 links- NIST CSF 2.0Cybersecurity framework v2.0 [verified 14:55Z]
- TryHackMeGuided learning paths for all skill levels.
- Hack The BoxReal-world pentesting challenges and labs.
- PortSwigger Web AcademyFree web security training by the Burp Suite team.
- PentesterLabHands-on web vulnerability labs.
Vulnerability databases
4 links- NVD (NIST)National Vulnerability Database — authoritative CVE data.
- Exploit-DBArchive of public exploits and proof-of-concepts.
- CVE DetailsCVE statistics, affected products, CVSS scores.
- CISA KEV catalogKnown exploited vulnerabilities requiring immediate action.
Standards & frameworks
4 links- NIST publicationsCSF, SP 800-53, SP 800-115, and all NIST security publications.
- OWASP FoundationOpen-source web security knowledge base and tools.
- MITRE ATT&CKAdversarial tactics, techniques, and common knowledge.
- CIS ControlsCritical security controls from the Center for Internet Security.
Financial & regulatory
4 links- FFIEC IT HandbookFederal examination procedures for financial IT security.
- DORA (EU)EU Digital Operational Resilience Act guidance.
- PCI DSS v4Payment card industry data security standard.
- SOC 2 criteriaAICPA trust services criteria for SOC audits.