Google Workspace Breach Response: What Security Teams Must Do in the First Hours

Discovering that an attacker has accessed Google Workspace is only the beginning of a security incident. The decisions security teams make next can determine how much damage an attacker causes.

On September 23, 2026, BleepingComputer will host a live webinar titled “Anatomy of a Breach: How a Fast-Growing Company Gets Compromised Via Google Workspace” with Material Security.

The webinar will feature Rajan Kapoor, VP of Security at Material Security, and Rick Fitzgerald, President at Fireside Consulting LLC. They will examine an actual, publicly documented Google Workspace breach and the decisions organizations made during the critical first hours of the incident.

In the two attacks explored during the webinar, attackers used a combination of social engineering and malicious OAuth applications to gain access to Google Workspace environments.

However, understanding how attackers gained access is only one part of responding to a breach.

When suspicious access is discovered, security teams must determine what was compromised, which users and data may be at risk, whether the attacker still has access, and what actions are needed to contain the incident.

For fast-growing companies with lean security teams, making these decisions quickly can be especially difficult. Responders must understand the attack while working to prevent it from escalating or causing additional damage.

This webinar examines what happened during the early stages of a real-world Google Workspace breach, which response decisions helped limit the impact, and what actions could have made the incident worse.

Attendees will also learn which security controls the speakers believe provide the most value and how they would build a Google Workspace security program from scratch.

Why the First Hours After a Google Workspace Breach Matter

If a Google Workspace breach is discovered, security teams may have incomplete information about how the attacker gained access, what they accessed, and whether they still have a foothold in the environment.

At the same time, defenders must make decisions that can directly affect the scope and impact of the incident.

That is why the first few hours are critical. Teams must investigate the initial access, identify users and data that could be compromised, and determine how to contain the attacker without overlooking other access paths.

Rather than provide a lengthy incident response checklist, the webinar uses real breaches to show how these situations unfolded and which decisions mattered most.

What the Google Workspace Security Webinar Will Cover

• What happens during the first hours of a Google Workspace breach
• How attackers combine social engineering and malicious OAuth applications to gain access
• Which early response decisions can limit or worsen the impact of an incident
• Often overlooked weaknesses that can put users, data, and connected applications at risk
• Which security controls provide the most value for rapidly growing companies with limited security resources

See how a real Google Workspace breach unfolds and what security teams can learn from decisions made during the critical first hours of an incident.

➡ Register now to secure your spot