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Security Operations 13 min read Published Apr 10, 2026 Updated Apr 15, 2026

Real Estate 30 60 90 Day Plan for Security Teams

Practical real estate 30 60 90 day plan for security teams - immediate assessment, containment, hardening, KPIs, and MSSP/MDR next steps.

By CyberReplay Security Team

TL;DR: Start this real estate 30 60 90 day plan with a 48-hour rapid gap assessment that confirms active compromise status, produces a prioritized asset inventory, and centralizes critical logs. Days 1-30 stabilize and contain the highest-risk exposures, Days 31-60 harden endpoints and automate detection, and Days 61-90 operationalize SLAs, playbooks, and tabletop testing. Expected outcomes: 60-90% reduction in critical external exposures within 30 days and 30-50% faster MTTR by Day 90 when paired with MDR or MSSP support.

Table of contents

Why this matters now

Real estate organizations manage distributed properties, tenant portals, building automation, and vendor access. Each item is an attacker entry point. Unaddressed gaps increase dwell time, regulatory exposure, and downtime that directly erode rental revenue and tenant trust.

Quick context and cost of inaction:

  • Attackers scan and exploit unpatched internet-facing services. Fixing the top 10% of exposures typically removes most immediate risk and can reduce public exposures by 60-90% within 14 days when remediations are applied.
  • Without 24-7 telemetry, mean time to detect (MTTD) commonly grows from hours to weeks, increasing recovery costs and legal exposure.

This real estate 30 60 90 day plan turns urgency into a measurable playbook that leadership can review and approve.

Quick answer

Start with a 48-hour rapid gap assessment that confirms whether an active compromise exists, produces a prioritized asset inventory, and centralizes critical logs. Immediately mitigate the top 10% highest-risk exposures. Deploy endpoint telemetry and a risk-based patch cadence in Days 31-60. By Day 90 you should have SLAs, tested playbooks, and dashboards that show MTTD and MTTR improvements.

Immediate actions you can take now:

Who this plan is for

  • Security or IT leaders at real estate firms, property managers, REITs, and healthcare real estate such as nursing homes.
  • Small security teams who must show measurable risk reduction to executives in 90 days.
  • Organizations missing 24-7 telemetry or endpoint coverage that need priorities and operational SLAs.

Not for: portfolios with mature, staffed 24-7 SOCs already meeting defined telemetry and response SLAs.

Days 1-30 - Assess and Stabilize

Goal - stop immediate bleeding and collect evidence. Deliverables: prioritized asset inventory, containment playbooks, centralized logs, and a remediation sprint for critical exposures.

Priority actions and measurable outcomes:

  • 0-2 days: 48-hour rapid gap assessment

    • Actions: run EDR/agent checks, inspect VPN/AD logs, scan internet-facing services, and snapshot suspect endpoints for forensics.
    • Deliverable: executive-ready summary with top 20 highest-risk assets and recommended mitigations.
    • Outcome: decision-ready data within 48 hours.

  • 3-10 days: fast asset inventory and exposure map

    • Actions: combine cloud console exports, network discovery, vendor device lists, and passive DNS to create a single CSV with owner, exposure, and last-patch date.
    • Deliverable: prioritized inventory sorted by business criticality.

  • 7-14 days: high-risk remediation sprint

    • Actions: remove direct RDP/SMB exposure, restrict management interfaces to VPN, rotate high-privilege credentials, apply perimeter deny rules for IOCs.
    • Outcome metric: 60-90% drop in internet-facing critical exposures among prioritized systems within two weeks.

  • 10-30 days: baseline detection

    • Actions: centralize logs from firewalls, VPNs, AD, cloud audit logs, and building-control gateways into your SIEM or MDR ingestion point; enable 5 tuned priority alerts.
    • Deliverable: first 14 days of telemetry with tuned alerts for authentication anomalies and lateral movement indicators.

Checklist - Days 1-30:

  • Confirm no active compromise or engage IR immediately.
  • Produce prioritized asset inventory with owners.
  • Patch or mitigate the top 10% critical issues.
  • Enforce MFA for admin and remote access.
  • Ingest key logs into a central telemetry sink and enable 5 priority alerts.

Sources: NIST SP 800-61 for incident triage and CISA guidance for emergency patch priorities.

Days 31-60 - Harden and Automate

Goal - reduce attack surface, remove manual bottlenecks, and automate detection and containment. Deliverables: hardened baselines, EDR coverage, network segmentation, and expanded detection rules.

Key tasks and targets:

  • Enforce least-privilege and endpoint lockdown

    • Actions: remove local admin rights, apply hardened baselines via GPO or MDM.
    • Target: 50-70% reduction in lateral movement risk after host lockdown.

  • Patch program with SLAs

    • Actions: implement SLAs - emergency patches within 48 hours, high-risk in 7 days, routine in 30 days. Automate inventory and reporting.
    • Target: reduce critical patch backlog by 60-80% in this window.

  • Deploy or enable EDR and link to detection pipeline

    • Actions: deploy EDR on 100% of business-critical endpoints, configure isolation controls, integrate with SIEM/MDR.
    • Outcome: faster containment and improved detection coverage.

  • Network segmentation quick wins

    • Actions: move HVAC, access control, and IoT to isolated VLANs with restricted management channels.
    • Outcome: sever lateral-movement paths often exploited in ransomware campaigns.

  • Expand detection set

    • Actions: grow tuned alerts from 5 to 20-30 signals focused on credential abuse and suspicious data movement.
    • Operational impact: measurable MTTD improvement as tuning reduces false positives.

Checklist - Days 31-60:

  • Remove unnecessary admin rights.
  • Meet patch SLAs for emergency and high-risk updates.
  • Achieve EDR coverage for business-critical endpoints.
  • Implement VLAN segmentation for building-control systems.
  • Expand detection rule set and reduce false positives by tuning.

Days 61-90 - Operate and Measure

Goal - shift from firefighting to measurable operations and continuous improvement. Deliverables: SLAs, KPIs, runbooks, tabletop exercises, and automated playbooks.

Operational priorities and targets:

  • Define KPIs and SLAs

    • Typical KPIs: MTTD, MTTR, patch backlog percentage, EDR coverage percent, and detection fidelity.
    • Targets to aim for: MTTD < 24 hours for high-priority alerts; MTTR < 72 hours for critical incidents; patch backlog for critical CVEs < 10%.

  • Publish and test IR playbooks

    • Actions: publish concise playbooks for ransomware, credential theft, and data exfiltration; include triggers, containment steps, communication templates, and escalation paths.
    • Outcome: consistent, faster responses and fewer ad-hoc decisions.

  • Tabletop and purple-team testing

    • Actions: run at least one tabletop and one targeted simulation focusing on high-value assets.
    • Outcome: uncover process and tooling gaps before real incidents.

  • Automate repeatable tasks

    • Actions: use SOAR, scripts, or MDR automation to block IOCs, disable accounts, and isolate hosts.
    • Target metric: automating two repeatable actions reduces MTTR by an estimated 30-50%.

Checklist - Days 61-90:

  • Dashboards for MTTD and MTTR in place.
  • Publish and test 3 priority playbooks.
  • Run a tabletop and a targeted simulation.
  • Automate repeatable containment tasks.

Practical checklists and playbooks

Rapid compromise containment playbook - 6 action steps:

  1. Isolate affected hosts - remove network access or place on isolated management VLAN.
  2. Disable compromised accounts and rotate admin credentials with documented custody.
  3. Collect forensic artifacts - event logs, EDR snapshots, and disk images.
  4. Apply emergency mitigations - block IOCs at perimeter, revoke tokens, and disable exposed services.
  5. Notify executive, legal, and affected stakeholders with preapproved templates.
  6. Restore from known-good backups after verification.

Emergency patching checklist:

  • Identify critical CVEs affecting internet-facing or admin systems.
  • Execute emergency maintenance windows within SLA.
  • Validate patches on pilot hosts before broad rollout.
  • Monitor logs for post-patch regressions.

Credential-theft detection rule example:

  • Alert when more than 5 failed interactive logons from the same IP across different accounts within 10 minutes. Tune thresholds for local noise.

Downloadable templates:

Tools and command snippets you can run today

PowerShell - list local admins on domain-joined hosts

# Run from a management host with domain privileges
Get-ADComputer -Filter * -Properties Name | ForEach-Object {
  $comp = $_.Name
  Invoke-Command -ComputerName $comp -ScriptBlock { Get-LocalGroupMember -Group "Administrators" } -ErrorAction SilentlyContinue
}

Linux - quick network scan for open RDP/SMB ports

# Replace 10.0.0.0/24 with your network range
nmap -p 3389,445 --open -oG open-ports.txt 10.0.0.0/24

Splunk - suspicious service creation

index=wineventlog EventCode=7045 | stats count by User, host, ServiceName | where count>3

Firewall rule example to block a malicious IP

# Add rule on perimeter firewall
deny ip any host 203.0.113.45 comment "block IOC seen in external feed"

Notes: validate SIEM/Splunk field names with your provider to reduce false positives.

Proof elements - scenarios and outcomes

Scenario - public cloud object exposure

  • Issue: property documents publicly accessible in object storage.
  • Action (Days 1-10): disable public access, capture audit logs, rotate keys, notify stakeholders.
  • Outcome: exposure closed within 8 hours; avoided regulatory notice and tenant churn.

Scenario - ransomware stopped by EDR

  • Issue: ransomware binary executed on a leasing workstation.
  • Action (Days 31-60): EDR containment isolates host, blocks process, IR playbook executed.
  • Outcome: no encryption of shared drives; avoided 48-72 hours downtime and revenue loss from leasing interruptions.

Scenario - HVAC controller pivot stopped by segmentation

  • Issue: HVAC controller used to pivot to corporate network.
  • Action (Days 31-60): VLAN segmentation and ACLs applied; monitoring added to management traffic.
  • Outcome: lateral-movement path severed and additional devices patched.

Each scenario connects controls to business outcomes - downtime avoided, fewer regulatory steps, and faster executive reporting.

Common objections and honest answers

We cannot afford downtime to patch or segment now.

  • Answer: Use compensating controls like temporary firewall deny rules, VPN-only management, and restricted maintenance windows. Prioritize emergency patches for exploitable CVEs only. These controls cut immediate risk while you schedule full maintenance.

We do not have staff to execute this plan.

  • Answer: This is when an MDR or MSSP partner helps. MDR can ingest telemetry, tune detections, and execute containment actions at lower marginal cost than hiring full-time staff.

We have antivirus and backups; why do more?

  • Answer: Signature-only antivirus is insufficient for modern threats. Backups help recovery but do not reduce detection time. Endpoint telemetry plus tested playbooks reduce both risk and recovery time.

Common mistakes

  • Patching everything at once instead of a risk-based cadence. Fix: prioritize internet-facing and admin systems under SLAs.
  • Assuming backups are sufficient without validating restores. Fix: test restores on representative systems.
  • Failing to isolate building automation from corporate networks. Fix: implement VLANs and restrict management channels.
  • Overreliance on signature-only antivirus. Fix: deploy or enable EDR and centralized telemetry.
  • Skipping playbooks and communications templates. Fix: publish concise IR playbooks and executive notification templates.

Definitions

  • MSSP: Managed Security Service Provider - manages devices, perimeter, and hygiene at scale. See: https://cyberreplay.com/managed-security-service-provider/
  • MDR: Managed Detection and Response - telemetry ingestion, detection, investigation, and containment service.
  • EDR: Endpoint Detection and Response - endpoint agent telemetry and containment controls.
  • SIEM: Security Information and Event Management - central log collection and correlation engine.
  • MTTD / MTTR: Mean Time to Detect and Mean Time to Respond - operational KPIs.
  • Asset inventory: prioritized list of hosts, applications, cloud services, and controllers with owner, criticality, and exposure status.

What should we do next?

Run a 48-hour gap assessment now to get a decision-ready prioritized 30-day list. Two low-friction options that produce measurable outputs:

If you lack 24-7 monitoring, onboard an MDR partner immediately to shorten detection time while you execute stabilization tasks. If you suspect active compromise, contact an incident response provider immediately and preserve forensic artifacts as described in NIST SP 800-61.

How this ties to MSSP, MDR, and IR services

  • MSSP: use for device management, firewall hygiene, and ongoing perimeter operations during Days 31-90.
  • MDR: critical during Days 1-30 when you lack telemetry; MDR shortens MTTD and can perform containment while you remediate.
  • IR: engage immediately upon confirmed compromise to preserve evidence and coordinate containment.

Hiring guidance:

  • No 24-7 telemetry: prioritize MDR during Days 1-30.
  • Short staff for device hygiene: add MSSP support for patch orchestration during Days 31-90.
  • Confirmed compromise: engage IR immediately and preserve forensic artifacts.

What are typical KPIs and targets?

  • MTTD: target < 24 hours for high-priority alerts.
  • MTTR: target < 72 hours for critical incidents.
  • Patch backlog for critical CVEs: target < 10% by Day 90.
  • EDR coverage: target 95-100% on business-critical endpoints.

Report weekly to leadership with an executive dashboard showing these KPIs and remediation velocity.

References

Get your free security assessment

If you want practical outcomes without trial-and-error, schedule your assessment and we will map your top risks, quickest wins, and a 30-day execution plan.

Conclusion and next step recommendation

Summary: This real estate 30 60 90 day plan gives you a time-boxed, measurable path from immediate containment to repeatable operations. If you need traction this week, run the 48-hour gap assessment and onboard telemetry. For teams without staff or 24-7 monitoring, prioritize MDR onboarding during Days 1-30 and add MSSP device hygiene during Days 31-90. Convert findings into an executive-ready 30-day plan by starting the CyberReplay scorecard or booking a rapid assessment.

Two immediate, low-friction next steps to produce measurable outcomes:

These produce prioritized actions you can present to leadership and reduce decision latency. If you suspect active compromise, contact an incident response provider immediately and preserve forensic artifacts as described in NIST SP 800-61.

When this matters

This 30 60 90 day plan matters when you need fast, measurable risk reduction and repeatable operations rather than a long project backlog. Typical triggers:

  • Distributed portfolio or many vendor-managed devices without centralized telemetry.
  • Recent acquisition or onboarded property where asset ownership and exposure are unknown.
  • Anomalous activity or suspected compromise where leadership needs a rapid, prioritized plan.
  • Upcoming high-stakes periods such as major leasing seasons or regulatory audits.

When to act: if you do not have 24-7 telemetry or cannot answer the question “Which 20 assets would cause the most business impact if compromised?” within 48 hours, start this plan.

Two immediate next steps you can run now:

If you prefer a short scheduling route, use the 15-minute prioritization call: https://cal.com/cyberreplay/15mincr.

FAQ

Q: How fast will I see measurable risk reduction?

A: You should see a measurable drop in critical internet-facing exposures within 14 to 30 days after completing the Days 1-30 remediation sprint. The plan targets the top 10 to 20 highest-risk assets first which typically produces a 60 to 90% reduction in immediate public exposures when mitigations are applied quickly. For incident handling and evidence preservation guidance, see NIST SP 800-61: https://csrc.nist.gov/publications/detail/sp/800-61/rev-2/final.

Q: Do we need to hire full-time staff to execute this plan?

A: Not necessarily. Small teams often combine internal effort with external MDR or MSSP support. MDR can provide 24-7 telemetry ingestion and containment capabilities during Days 1-30 while MSSP support can assist with patch orchestration and device hygiene during Days 31-90. See CISA guidance on prioritizing emergency patching and incident response for practical steps: https://www.cisa.gov/resources-tools.

Q: What is the minimum telemetry set I need before starting Days 31-60?

A: At minimum ingest firewall logs, VPN logs, AD/authentication logs, and endpoint telemetry for business-critical hosts. These sources let you tune priority alerts and validate containment actions. If you lack these, prioritize onboarding MDR or a SIEM ingestion point first.