Cloud Access Security Broker (CASB)
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See every cloud app your employees use, sanctioned or not
Your official app catalog is not the same as the apps your employees actually use. Every unsanctioned file-sharing tool and unlisted SaaS platform is a path for sensitive data to leave your organization without anyone noticing.
Cloud Access Security Broker (CASB) gives you visibility into cloud activity across sanctioned and unsanctioned applications alike, enforcing data protection policy at the point of access. Delivered as part of GTT’s Secure Connect: Secure Access Service Edge (SASE) framework, CASB closes the gap between the cloud environment you’ve approved and the one your employees are actually using.
Shadow IT: The risk you can’t see coming
Cloud adoption moves faster than IT approval processes. Employees sign up for tools that solve an immediate problem, often without realizing the data they’re uploading falls outside any security policy at all.
Without a CASB in place, organizations run into a familiar set of exposures:
- Unsanctioned SaaS applications operate completely outside security visibility
- Sensitive data gets uploaded to personal cloud storage accounts with no oversight
- Compromised credentials grant attackers access to sanctioned apps undetected
- Compliance teams can’t demonstrate control over where regulated data actually lives
- Security policy exists on paper but has no way to enforce itself in the cloud
With CASB in place, your organization can
- Discover unsanctioned cloud applications the moment they appear on your network
- Apply consistent data loss prevention policy across sanctioned and unsanctioned apps alike
- Enforce authentication, encryption and access controls at the application level
- Detect anomalous user behavior that signals a compromised account
- Report on cloud usage and policy enforcement through GTT EnvisionDX
The GTT CASB difference
Shadow IT discovery and control
Applications your security team has never approved are often the ones handling your most
sensitive data.
Without GTT
- Unsanctioned apps operate invisibly outside IT oversight
- Continuous discovery surfaces new SaaS usage as it happens
- No mechanism exists to block or sanction risky applications
With GTT
- Risky apps get blocked or brought under policy in real time
- Security policy only covers apps IT already knows about
- Coverage extends automatically to newly discovered cloud activity
Results
Shadow IT stops being invisible. Your security posture reflects what employees actually use, not just what IT approved
Data loss prevention in the cloud
Corporate data moving through cloud applications needs the same protection it would get inside
your own network.
Without GTT
- Sensitive files upload to cloud apps with no inspection
- Data sharing settings are left to individual user discretion
- Intellectual property leaves the organization undetected
With GTT
- Content scanning applies DLP rules to cloud-bound data
- Granular controls govern how data can be shared externally
- Policy violations are flagged and blocked before data exits
Results
Your data protection policy follows the data, whether it lives on your network or inside a cloud application
Access control and credential protection
Compromised credentials are one of the most common ways attackers gain a foothold
inside cloud environments.
Without GTT
- Compromised logins grant full access with no additional checks
- User behavior inside cloud apps goes unmonitored
- A stolen password is often enough to reach sensitive data
With GTT
- Authentication, single sign-on and tokenization add layered protection
- Anomalous activity gets flagged for investigation automatically
- Encryption and credential mapping limit what a stolen login can expose
Results
A single compromised credential no longer means unrestricted access to your cloud environment.
Visibility across a growing cloud footprint
Cloud usage expands faster than most security teams can track manually.
Without GTT
- Reporting on cloud usage is fragmented or nonexistent
- New SaaS tools go unnoticed until an incident occurs
- Compliance audits require manual reconstruction of cloud activity
With GTT
- GTT EnvisionDX consolidates cloud activity into one dashboard
- Ongoing discovery keeps visibility current as usage evolves
- Documented policy enforcement is available on demand
Results
You always know what’s running in your cloud environment, not just what you approved months ago
How it works
GTT delivers ZTNA as a cloud-based service within your SASE framework. No appliances
to procure and no performance penalty for verifying access.
1
Discovery and risk assessment
We begin by mapping your current cloud footprint, including sanctioned platforms and the shadow IT already in use across your organization. This baseline shapes the policies we configure next.
2
Policy configuration and deployment
GTT configures data loss prevention rules, access controls and authentication policies tailored to your risk profile, then deploys CASB as part of your broader SASE architecture alongside ZTNA, DLP, FWaaS and SWG.
3
Continuous monitoring and reporting
Once live, cloud activity is monitored continuously for new application usage and anomalous behavior. GTT EnvisionDX gives your team ongoing visibility and reporting to support both security operations and compliance audits.
Discover more in our Cloud Security portfolio
GTT’s SSE services integrates six key security services into a single unified solution:
Secure Web Gateway (SWG)
Provides comprehensive protection for users accessing the internet and SaaS applications. It enforces acceptable use policies, blocks malicious websites and prevents threats like malware and phishing in real time.
Zero Trust Network Access (ZTNA)
Replaces legacy VPNs with secure application-level access. It grants access based on user identity and device posture, not network location, ensuring that only authorized users can access specific private applications.
Firewall as a Service (FWaaS)
Delivers next-generation firewall capabilities from the cloud. Engage consistent firewall protection for all users and locations without the need for physical or virtual appliances.
Secure Remote Access
Enables users to safely access enterprise applications from anywhere by verifying identity, enforcing leastprivileged access and applying continuous security controls independent of location.
Data Loss Protection (DLP)
Provides security control that prevents sensitive data from being exposed or exfiltrated by identifying, monitoring and enforcing policies on data across users, devices, applications and networks.
Frequently asked questions
What cloud services can a Cloud Access Security Broker protect?
CASB can protect a wide range of cloud services, including SaaS, PaaS and IaaS. Automate threat alerts for cloud apps and programs by using GTT as your CASB vendor. Get user behavior analytics from cloud platforms and protect corporate data with one enterprise security solution.
How does a Cloud Access Security Broker handle shadow IT and unsanctioned cloud usage?
CASBs can identify shadow IT and unsanctioned cloud applications used within an organization and provide real-time remediation options to block or sanction them based on security policies. Similar to data center security and endpoint security, CASB provides malware detection and ransomware alerts from phishing attacks to protect your organization’s security.
Can a Cloud Access Security Broker assist with compliance and regulatory requirements?
Yes, CASBs can help organizations maintain compliance by providing control and visibility over data in the cloud and enforcing data protection policies. Stay compliant with HIPAA regulations and others with GTT security services.
Complete your solution
Managed SD-WAN
Transform your WAN with dynamic network traffic management for flexibility, speed, security and cost control.
SASE: Secure Connect
Enable secure and controlled access to applications from anywhere.
Managed Hybrid Cloud
Public cloud flexibility with private cloud confidence, integrating with other clouds across the globe
Cloud Connect
Optimize your business-critical applications and connect to leading Cloud Service Provider
Our Gartner rating
Bring your cloud environment into view
The applications you haven't approved are still part of your attack surface. Gain the visibility and control to close that gap without slowing your teams down.