Google Workspace Security & Cybersecurity Services Sentry Cyber

A cyber attack can hit any business, at any time. When it does, every minute counts. Having a clear incident response plan means your team knows exactly what to do, so you limit damage and recover faster. For businesses using Google Workspace, this is especially critical, as a compromised account can expose emails, files, contacts, and connected applications all at once. In this guide, we walk you through what a cyber response plan includes, how to build one, and which Google Workspace tools help you act fast when it matters most.

What Is an Incident Response Plan?

An incident response plan (IRP) is a documented set of steps your organisation follows when a cyber security incident occurs. It typically covers four key phases: preparation, detection and analysis, containment and eradication, and recovery. Without one, your team wastes valuable time during a crisis.

A strong plan also supports your GRC (Governance, Risk, and Compliance) strategy. It helps you demonstrate due diligence to regulators, insurers, and clients. Frameworks like the NIST Cybersecurity Framework structure your response across five functions: Identify, Protect, Detect, Respond, and Recover. Similarly, the Essential Eight and SMB1001 frameworks help small and medium businesses build practical, prioritised controls.

Related terms you may encounter: cyber incident response, data breach response plan, security incident management, cybersecurity framework compliance, and GRC governance risk compliance. All of these point to the same core need: a structured, tested cyber response plan before an attack arrives.

Why Google Workspace Users Need a Cyber Incident Response Plan

Google Workspace is one of the most widely used business platforms in the world. Because of this, it is also a prime target for cyber criminals. A Business Email Compromise (BEC) or Account Takeover (ATO) gives attackers access to Gmail, Google Drive, Contacts, and connected apps — all in a single breach.

Ransomware attacks often begin with a compromised email account. Once attackers get in, they move quickly. They set auto-forwarding rules, download bulk files, install persistent OAuth apps, and export data via Google Takeout, sometimes all within hours. Without a structured Google Workspace security plan, most organisations don’t detect this until significant damage is done.

If you’re unsure how exposed your business is, our complementary cyber security workshop helps you identify your top vulnerabilities before attackers do.

Step 1 — Prepare Before an Incident Strikes

Preparation is the most valuable phase of any cyber incident response. The steps you take now define how quickly you respond later.

Policies and Playbooks

First, document a clear response procedure for account compromise. Your playbook should assign roles, define escalation paths, and outline communication protocols. Store it somewhere your team can access quickly even during a crisis. Update it at least annually, or after any significant change to your environment.

Access, Tools, and Log Availability

Not all Google Workspace licences give you the same forensic visibility. The table below shows which log types are available across licence tiers:

Drive log events — Available on Business Standard and above
Gmail log events — Available on ,Enterprise Plus & Education Plus
Login audit log — Available on all tiers
OAuth log events — Available on Business Standard and above
Google Vault log events — Requires Vault add-on or Enterprise
Takeout log events — Available on Business Standard and above

Review your licence before an incident occurs. Knowing your log availability in advance means you won’t be searching for answers when time is critical.

Preventive Security Controls

Strong prevention reduces your attack surface significantly. Next, consider enforcing these controls across your Google Workspace environment:

Enforce multi-factor authentication (MFA) for all users
Enrol high-privilege and super admin accounts in Google’s Advanced Protection Program
Enable Context-Aware Access policies to block logins from untrusted devices
Disable IMAP/POP globally unless it is business-critical
Disable Google Drive Sync for unmanaged devices
Restrict Google Takeout to authorised users only
Apply least-privilege principles across Google Drive sharing settings

Our Google Workspace security services cover all of these controls and more, helping you harden your environment before attackers find a way in.

To understand many of the Google Workspace security features and best practices for how to configure them, please read our Google Workspace Security ebook here

Step 2 — Detect and Analyse the Threat

When something looks suspicious, you need to act quickly. First, confirm whether it is a real incident or a false positive.

Check Login Activity and Alert Sources

Review suspicious sign-ins via Admin Console → Security → Login Audit Log. Compare the login IP address, location, and device against the user’s normal behaviour. Key red flags include:

Logins from unusual countries or regions
Logins via Tor or VPN endpoints
Sign-ins at unusual hours
Multiple failed login attempts followed by a successful one

Next, confirm the activity directly with the affected user. If they did not log in from that location or device, you likely have a real incident on your hands. Escalate immediately to a senior stakeholder or C-level executive.

Forensic Investigation Across Google Workspace Services

Once you confirm a compromise, begin a forensic investigation. Work through each Google Workspace service, starting with the most frequently targeted:

Google Drive — Use the Investigation Tool (Admin Console → Security → Investigation Tool). Filter Drive log events by date range and the affected user. Look for bulk file views, downloads, deletions, or external sharing events.
Gmail — Review Gmail log events for the incident window. Then audit the user’s Gmail settings directly: check Filters and Blocked Addresses for auto-forwarding rules, Forwarding and POP/IMAP for hidden forwarding, Accounts and Import for delegated access, and the General tab for malicious signatures or vacation responder content.
Google Contacts — Check whether contacts were exported during the incident window. Threat actors frequently steal contact lists for follow-on phishing attacks.
Google Vault — Review Vault log events. Any unexpected export during the incident window is a serious red flag.
Google Takeout — Flag any Takeout activity during the incident window as high priority. A full account export via Takeout can give an attacker a copy of everything.
Connected Apps (OAuth) — Audit OAuth log events for newly granted third-party app access. Filter by “Grant” events for the affected user. A malicious app can maintain persistent access even after a password reset.
DLP Logs — If Data Loss Prevention is enabled, filter log events by DLP_RULE_TRIGGERED. Look for audit-only triggers (attempted exfiltration, logged only), warn triggers (user was prompted), and block triggers (exfiltration was stopped successfully).

Also watch for patterns: multiple Gmail DLP triggers in a short window suggest attempted mass exfiltration. Drive DLP triggers linked to external sharing suggest the attacker tried to move files outside your organisation.

Step 3 — Contain, Eradicate, and Recover

After confirming the scope of the incident, act fast. Use the following checklists to contain the threat and begin recovery.

Containment and Eradication Checklist

Reset the user’s password immediately via Admin Console → Users → Security
Force sign-out of all sessions by resetting sign-in cookies on the same screen
Review connected apps, remove any with suspicious or unrecognised Drive, Gmail, or Contacts access
Remove unauthorised email filters, forwarding rules, signatures, and delegates
Disable IMAP/POP on the affected account
If the account has admin or super admin privileges, audit your entire Workspace environment
Run your endpoint incident response playbook — the attacker may have also compromised the user’s device

Recovery Steps

Reset the password again if logs show any post-reset activity
Reconfigure Gmail and Drive to secure, default settings
Re-enrol the user in MFA
Restore any deleted data from Google Vault or the Bin (within 30 days of deletion)
Notify the affected user, management, and legal team as required
If data was exposed, trigger your data breach notification process to meet your regulatory obligations

For organisations without in-house security expertise, our cyber security monitoring services provide 24/7 detection and response support, so your team is never alone during an incident.

Step 4 — Post-Incident Review and Improvement

After recovery, run a lessons learned meeting. Document the full timeline, the response steps taken, and any gaps you found. Then update your incident response plan accordingly.

Ensure the following alerts are active in your Google Workspace Alert Centre (Security → Alert Centre):

Suspicious login
Leaked password
Device compromised
Malware message detected post-delivery
Super admin password reset
User granted Admin privilege
Domain data export initiated

Also review your log retention. Google Workspace retains most audit logs for approximately 90 days. If your business needs longer retention, consider Google SecOps or a third-party SIEM. Our security consulting team can help you assess the right solution for your organisation.

What to Include in Your Incident Response Plan

A strong, complete incident response plan should include the following elements:

A documented response procedure with assigned roles and escalation contacts
A licence and tool reference so you know which logs are accessible before an incident
A step-by-step investigation checklist for each Google Workspace service
A containment and eradication checklist
A recovery workflow, including data restoration and breach notification steps
A post-incident review process with a defined update cadence
A formal cyber incident report template

Your incident report should also classify the data potentially exposed. Common data classifications include:

PII — Names, addresses, phone numbers, email addresses
Financial Information — Bank account details, card numbers, tax records
PHI (Protected Health Information) — Medical records, diagnoses, health insurance data
Intellectual Property — Trade secrets, contracts, internal business data

Knowing your data classifications in advance helps you understand your regulatory obligations under GDPR, the Australian Privacy Act, HIPAA, and similar frameworks. This is a core part of any solid GRC compliance and certification programme.

Align Your Plan with a Cyber Security Framework

Your cyber security response works best when it sits inside a broader cyber security framework. Frameworks give your plan structure, repeatability, and regulatory credibility.

The NIST Cybersecurity Framework (CSF) provides structured guidance across five functions: Identify, Protect, Detect, Respond, and Recover. The Essential Eight helps Australian businesses implement prioritised, practical controls. And SMB1001 is purpose-built for small and medium businesses needing a straightforward certification pathway.

If you’d like help aligning your data breach response strategy to one of these frameworks, our CISO as a Service and security assessment offerings provide expert guidance without the cost of a full-time hire.

Also, don’t overlook the human element. Many breaches start with a phishing email. Our cyber awareness training and phishing simulations help your staff recognise and report threats before they escalate into full incidents. You might also find our blog on how ransomware attacks work useful for understanding the threat landscape your business faces.

Frequently Asked Questions

What is an incident response plan?

An incident response plan is a documented set of procedures your team follows when a cyber security incident occurs. It covers preparation, detection, containment, eradication, and recovery — giving your team a clear roadmap before an attack strikes.

Why do Google Workspace users need an incident response plan?

Google Workspace accounts are a top target for cyber criminals. A compromised account can expose emails, files, contacts, and connected applications all at once. A cyber incident response plan ensures your team responds quickly and consistently, limiting data loss and meeting your regulatory obligations.

What should I include in a cyber incident report?

Your report should include the timeline of events, confirmed indicators of compromise, a forensic log summary across each affected service, containment and recovery actions taken, an impact assessment (data exposed, regulatory obligations), cost estimates, and lessons learned. See our Google Workspace security services for template support.

How long do Google Workspace logs last?

Google Workspace retains most audit logs for approximately 90 days. Businesses needing longer retention should consider Google SecOps or a third-party SIEM solution. Speak with our security consulting team to find the right fit for your organisation.

Does my Google Workspace licence affect my incident response capabilities?

Yes. Different licence tiers provide access to different log types. Enterprise licences offer the most comprehensive forensic visibility. Importantly, you should check your licence against log availability before an incident occurs, so you know exactly what evidence you can collect.

What is GRC and how does it relate to incident response?

GRC stands for Governance, Risk, and Compliance. A well-structured incident response plan is a core component of any GRC programme, demonstrating to regulators, insurers, and clients that your organisation manages cyber risk proactively. Our compliance and certification services help you build a plan that meets framework requirements.

Incident Response Plan for Google Workspace: Detect, Respond, and Recover